diff --git a/clang/unittests/Tooling/Syntax/BuildTreeTest.cpp b/clang/unittests/Tooling/Syntax/BuildTreeTest.cpp
--- a/clang/unittests/Tooling/Syntax/BuildTreeTest.cpp
+++ b/clang/unittests/Tooling/Syntax/BuildTreeTest.cpp
@@ -17,7 +17,70 @@
 
 namespace {
 
-TEST_P(SyntaxTreeTest, Simple) {
+class BuildSyntaxTreeTest : public SyntaxTreeTest {
+protected:
+  ::testing::AssertionResult treeDumpEqual(StringRef Code, StringRef Tree) {
+    SCOPED_TRACE(llvm::join(GetParam().getCommandLineArgs(), " "));
+
+    auto *Root = buildTree(Code, GetParam());
+    if (Diags->getClient()->getNumErrors() != 0) {
+      return ::testing::AssertionFailure()
+             << "Source file has syntax errors, they were printed to the test "
+                "log";
+    }
+    auto Actual = StringRef(Root->dump(Arena->sourceManager())).trim().str();
+    // EXPECT_EQ shows the diff between the two strings if they are different.
+    EXPECT_EQ(Tree.trim().str(), Actual);
+    if (Actual != Tree.trim().str()) {
+      return ::testing::AssertionFailure();
+    }
+    return ::testing::AssertionSuccess();
+  }
+
+  ::testing::AssertionResult
+  treeDumpEqualOnAnnotations(StringRef CodeWithAnnotations,
+                             ArrayRef<StringRef> TreeDumps) {
+    SCOPED_TRACE(llvm::join(GetParam().getCommandLineArgs(), " "));
+
+    auto AnnotatedCode = llvm::Annotations(CodeWithAnnotations);
+    auto *Root = buildTree(AnnotatedCode.code(), GetParam());
+
+    if (Diags->getClient()->getNumErrors() != 0) {
+      return ::testing::AssertionFailure()
+             << "Source file has syntax errors, they were printed to the test "
+                "log";
+    }
+
+    auto AnnotatedRanges = AnnotatedCode.ranges();
+    if (AnnotatedRanges.size() != TreeDumps.size()) {
+      return ::testing::AssertionFailure()
+             << "The number of annotated ranges in the source code is "
+                "different "
+                "to the number of their corresponding tree dumps.";
+    }
+    bool Failed = false;
+    for (unsigned i = 0; i < AnnotatedRanges.size(); i++) {
+      auto *AnnotatedNode = nodeByRange(AnnotatedRanges[i], Root);
+      assert(AnnotatedNode);
+      auto AnnotatedNodeDump =
+          StringRef(AnnotatedNode->dump(Arena->sourceManager())).trim().str();
+      // EXPECT_EQ shows the diff between the two strings if they are different.
+      EXPECT_EQ(TreeDumps[i].trim().str(), AnnotatedNodeDump)
+          << "Dumps diverged for the code:\n"
+          << AnnotatedCode.code().slice(AnnotatedRanges[i].Begin,
+                                        AnnotatedRanges[i].End);
+      if (AnnotatedNodeDump != TreeDumps[i].trim().str())
+        Failed = true;
+    }
+    return Failed ? ::testing::AssertionFailure()
+                  : ::testing::AssertionSuccess();
+  }
+};
+
+INSTANTIATE_TEST_CASE_P(SyntaxTreeTests, BuildSyntaxTreeTest,
+                        testing::ValuesIn(allTestClangConfigs()), );
+
+TEST_P(BuildSyntaxTreeTest, Simple) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int main() {}
@@ -48,7 +111,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, SimpleVariable) {
+TEST_P(BuildSyntaxTreeTest, SimpleVariable) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int a;
@@ -72,7 +135,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, SimpleFunction) {
+TEST_P(BuildSyntaxTreeTest, SimpleFunction) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 void foo(int a, int b) {}
@@ -102,7 +165,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, If) {
+TEST_P(BuildSyntaxTreeTest, If) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -144,7 +207,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, For) {
+TEST_P(BuildSyntaxTreeTest, For) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -164,7 +227,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, RangeBasedFor) {
+TEST_P(BuildSyntaxTreeTest, RangeBasedFor) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -194,7 +257,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, DeclarationStatement) {
+TEST_P(BuildSyntaxTreeTest, DeclarationStatement) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -214,7 +277,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, Switch) {
+TEST_P(BuildSyntaxTreeTest, Switch) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -247,7 +310,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, While) {
+TEST_P(BuildSyntaxTreeTest, While) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -273,7 +336,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnhandledStatement) {
+TEST_P(BuildSyntaxTreeTest, UnhandledStatement) {
   // Unhandled statements should end up as 'unknown statement'.
   // This example uses a 'label statement', which does not yet have a syntax
   // counterpart.
@@ -295,7 +358,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, Expressions) {
+TEST_P(BuildSyntaxTreeTest, Expressions) {
   // expressions should be wrapped in 'ExpressionStatement' when they appear
   // in a statement position.
   EXPECT_TRUE(treeDumpEqual(
@@ -351,7 +414,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_Identifier) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_Identifier) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test(int a) {
@@ -365,7 +428,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_OperatorFunctionId) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_OperatorFunctionId) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -397,7 +460,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_ConversionFunctionId) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_ConversionFunctionId) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -426,7 +489,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_LiteralOperatorId) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_LiteralOperatorId) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -452,7 +515,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_Destructor) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_Destructor) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -479,7 +542,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_DecltypeDestructor) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_DecltypeDestructor) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -513,7 +576,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UnqualifiedId_TemplateId) {
+TEST_P(BuildSyntaxTreeTest, UnqualifiedId_TemplateId) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -538,7 +601,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, QualifiedId_NamespaceSpecifier) {
+TEST_P(BuildSyntaxTreeTest, QualifiedId_NamespaceSpecifier) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -575,7 +638,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, QualifiedId_TemplateSpecifier) {
+TEST_P(BuildSyntaxTreeTest, QualifiedId_TemplateSpecifier) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -621,7 +684,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, QualifiedId_DecltypeSpecifier) {
+TEST_P(BuildSyntaxTreeTest, QualifiedId_DecltypeSpecifier) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -653,7 +716,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, QualifiedId_OptionalTemplateKw) {
+TEST_P(BuildSyntaxTreeTest, QualifiedId_OptionalTemplateKw) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -701,7 +764,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, QualifiedId_Complex) {
+TEST_P(BuildSyntaxTreeTest, QualifiedId_Complex) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -744,7 +807,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, QualifiedId_DependentType) {
+TEST_P(BuildSyntaxTreeTest, QualifiedId_DependentType) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -815,7 +878,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, This_Simple) {
+TEST_P(BuildSyntaxTreeTest, This_Simple) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -833,7 +896,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, This_ExplicitMemberAccess) {
+TEST_P(BuildSyntaxTreeTest, This_ExplicitMemberAccess) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -857,7 +920,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, This_ImplicitMemberAccess) {
+TEST_P(BuildSyntaxTreeTest, This_ImplicitMemberAccess) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -877,7 +940,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ParenExpr) {
+TEST_P(BuildSyntaxTreeTest, ParenExpr) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -919,7 +982,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UserDefinedLiteral_Char) {
+TEST_P(BuildSyntaxTreeTest, UserDefinedLiteral_Char) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -936,7 +999,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UserDefinedLiteral_String) {
+TEST_P(BuildSyntaxTreeTest, UserDefinedLiteral_String) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -956,7 +1019,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UserDefinedLiteral_Integer) {
+TEST_P(BuildSyntaxTreeTest, UserDefinedLiteral_Integer) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -987,7 +1050,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UserDefinedLiteral_Float) {
+TEST_P(BuildSyntaxTreeTest, UserDefinedLiteral_Float) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -1018,7 +1081,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, IntegerLiteral_LongLong) {
+TEST_P(BuildSyntaxTreeTest, IntegerLiteral_LongLong) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -1039,7 +1102,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, IntegerLiteral_Binary) {
+TEST_P(BuildSyntaxTreeTest, IntegerLiteral_Binary) {
   if (!GetParam().isCXX14OrLater()) {
     return;
   }
@@ -1055,7 +1118,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, IntegerLiteral_WithDigitSeparators) {
+TEST_P(BuildSyntaxTreeTest, IntegerLiteral_WithDigitSeparators) {
   if (!GetParam().isCXX14OrLater()) {
     return;
   }
@@ -1071,7 +1134,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CharacterLiteral) {
+TEST_P(BuildSyntaxTreeTest, CharacterLiteral) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -1109,7 +1172,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CharacterLiteral_Utf) {
+TEST_P(BuildSyntaxTreeTest, CharacterLiteral_Utf) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -1140,7 +1203,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CharacterLiteral_Utf8) {
+TEST_P(BuildSyntaxTreeTest, CharacterLiteral_Utf8) {
   if (!GetParam().isCXX17OrLater()) {
     return;
   }
@@ -1161,7 +1224,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, FloatingLiteral) {
+TEST_P(BuildSyntaxTreeTest, FloatingLiteral) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -1189,7 +1252,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, FloatingLiteral_Hexadecimal) {
+TEST_P(BuildSyntaxTreeTest, FloatingLiteral_Hexadecimal) {
   if (!GetParam().isCXX17OrLater()) {
     return;
   }
@@ -1220,7 +1283,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, StringLiteral) {
+TEST_P(BuildSyntaxTreeTest, StringLiteral) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -1238,7 +1301,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, StringLiteral_Utf) {
+TEST_P(BuildSyntaxTreeTest, StringLiteral_Utf) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -1264,7 +1327,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, StringLiteral_Raw) {
+TEST_P(BuildSyntaxTreeTest, StringLiteral_Raw) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -1297,7 +1360,7 @@
       "    `-'}' CloseParen\n"));
 }
 
-TEST_P(SyntaxTreeTest, BoolLiteral) {
+TEST_P(BuildSyntaxTreeTest, BoolLiteral) {
   if (GetParam().isC()) {
     return;
   }
@@ -1318,7 +1381,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CxxNullPtrLiteral) {
+TEST_P(BuildSyntaxTreeTest, CxxNullPtrLiteral) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -1334,7 +1397,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, PostfixUnaryOperator) {
+TEST_P(BuildSyntaxTreeTest, PostfixUnaryOperator) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test(int a) {
@@ -1358,7 +1421,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, PrefixUnaryOperator) {
+TEST_P(BuildSyntaxTreeTest, PrefixUnaryOperator) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test(int a, int *ap) {
@@ -1444,7 +1507,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, PrefixUnaryOperatorCxx) {
+TEST_P(BuildSyntaxTreeTest, PrefixUnaryOperatorCxx) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1471,7 +1534,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, BinaryOperator) {
+TEST_P(BuildSyntaxTreeTest, BinaryOperator) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test(int a) {
@@ -1545,7 +1608,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, BinaryOperatorCxx) {
+TEST_P(BuildSyntaxTreeTest, BinaryOperatorCxx) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1593,7 +1656,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, BinaryOperator_NestedWithParenthesis) {
+TEST_P(BuildSyntaxTreeTest, BinaryOperator_NestedWithParenthesis) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -1624,7 +1687,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, BinaryOperator_Associativity) {
+TEST_P(BuildSyntaxTreeTest, BinaryOperator_Associativity) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test(int a, int b) {
@@ -1662,7 +1725,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, BinaryOperator_Precedence) {
+TEST_P(BuildSyntaxTreeTest, BinaryOperator_Precedence) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 void test() {
@@ -1704,7 +1767,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_Assignment) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_Assignment) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1729,7 +1792,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_Plus) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_Plus) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1754,7 +1817,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_Less) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_Less) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1779,7 +1842,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_LeftShift) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_LeftShift) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1804,7 +1867,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_Comma) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_Comma) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1829,7 +1892,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_PointerToMember) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_PointerToMember) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1854,7 +1917,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_Negation) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_Negation) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1876,7 +1939,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_AddressOf) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_AddressOf) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1898,7 +1961,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_PrefixIncrement) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_PrefixIncrement) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1920,7 +1983,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperator_PostfixIncrement) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperator_PostfixIncrement) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1942,7 +2005,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_SimpleWithDot) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_SimpleWithDot) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 struct S {
@@ -1964,7 +2027,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_StaticDataMember) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_StaticDataMember) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -1989,7 +2052,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_SimpleWithArrow) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_SimpleWithArrow) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 struct S {
@@ -2011,7 +2074,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_Chaining) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_Chaining) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 struct S {
@@ -2038,7 +2101,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_OperatorFunction) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_OperatorFunction) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2067,7 +2130,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_VariableTemplate) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_VariableTemplate) {
   if (!GetParam().isCXX14OrLater()) {
     return;
   }
@@ -2103,7 +2166,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_FunctionTemplate) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_FunctionTemplate) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2135,7 +2198,8 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_FunctionTemplateWithTemplateKeyword) {
+TEST_P(BuildSyntaxTreeTest,
+       MemberExpression_FunctionTemplateWithTemplateKeyword) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2168,7 +2232,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_WithQualifier) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_WithQualifier) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2221,7 +2285,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberExpression_Complex) {
+TEST_P(BuildSyntaxTreeTest, MemberExpression_Complex) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2279,7 +2343,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Callee_Member) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Callee_Member) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2307,7 +2371,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Callee_OperatorParens) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Callee_OperatorParens) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2330,7 +2394,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Callee_OperatorParensChaining) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Callee_OperatorParensChaining) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2356,7 +2420,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Callee_MemberWithThis) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Callee_MemberWithThis) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2412,7 +2476,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Callee_FunctionPointer) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Callee_FunctionPointer) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2447,7 +2511,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Callee_MemberFunctionPointer) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Callee_MemberFunctionPointer) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2480,7 +2544,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_Zero) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_Zero) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2503,7 +2567,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_One) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_One) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2529,7 +2593,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_Multiple) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_Multiple) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2561,7 +2625,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_Assignment) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_Assignment) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2592,7 +2656,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_BracedInitList_Empty) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_BracedInitList_Empty) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -2620,7 +2684,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_BracedInitList_Simple) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_BracedInitList_Simple) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -2660,7 +2724,8 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_BracedInitList_Designated) {
+TEST_P(BuildSyntaxTreeTest,
+       CallExpression_Arguments_BracedInitList_Designated) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -2707,7 +2772,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_Arguments_ParameterPack) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_Arguments_ParameterPack) {
   if (!GetParam().isCXX11OrLater() || GetParam().hasDelayedTemplateParsing()) {
     return;
   }
@@ -2733,7 +2798,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, CallExpression_DefaultArguments) {
+TEST_P(BuildSyntaxTreeTest, CallExpression_DefaultArguments) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -2781,7 +2846,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MultipleDeclaratorsGrouping) {
+TEST_P(BuildSyntaxTreeTest, MultipleDeclaratorsGrouping) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int *a, b;
@@ -2810,7 +2875,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, MultipleDeclaratorsGroupingTypedef) {
+TEST_P(BuildSyntaxTreeTest, MultipleDeclaratorsGroupingTypedef) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 typedef int *a, b;
@@ -2830,7 +2895,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, MultipleDeclaratorsInsideStatement) {
+TEST_P(BuildSyntaxTreeTest, MultipleDeclaratorsInsideStatement) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 void foo() {
@@ -2874,7 +2939,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, SizeTTypedef) {
+TEST_P(BuildSyntaxTreeTest, SizeTTypedef) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -2901,7 +2966,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Namespace_Nested) {
+TEST_P(BuildSyntaxTreeTest, Namespace_Nested) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2924,7 +2989,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Namespace_NestedDefinition) {
+TEST_P(BuildSyntaxTreeTest, Namespace_NestedDefinition) {
   if (!GetParam().isCXX17OrLater()) {
     return;
   }
@@ -2944,7 +3009,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Namespace_Unnamed) {
+TEST_P(BuildSyntaxTreeTest, Namespace_Unnamed) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2961,7 +3026,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Namespace_Alias) {
+TEST_P(BuildSyntaxTreeTest, Namespace_Alias) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -2980,7 +3045,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UsingDirective) {
+TEST_P(BuildSyntaxTreeTest, UsingDirective) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3000,7 +3065,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UsingDeclaration_Namespace) {
+TEST_P(BuildSyntaxTreeTest, UsingDeclaration_Namespace) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3021,7 +3086,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UsingDeclaration_ClassMember) {
+TEST_P(BuildSyntaxTreeTest, UsingDeclaration_ClassMember) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3055,7 +3120,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, UsingTypeAlias) {
+TEST_P(BuildSyntaxTreeTest, UsingTypeAlias) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3074,7 +3139,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, FreeStandingClass_ForwardDeclaration) {
+TEST_P(BuildSyntaxTreeTest, FreeStandingClass_ForwardDeclaration) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 [[struct X;]]
@@ -3097,7 +3162,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, FreeStandingClasses_Definition) {
+TEST_P(BuildSyntaxTreeTest, FreeStandingClasses_Definition) {
   EXPECT_TRUE(treeDumpEqualOnAnnotations(
       R"cpp(
 [[struct X {};]]
@@ -3135,7 +3200,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, StaticMemberFunction) {
+TEST_P(BuildSyntaxTreeTest, StaticMemberFunction) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3160,7 +3225,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OutOfLineMemberFunctionDefinition) {
+TEST_P(BuildSyntaxTreeTest, OutOfLineMemberFunctionDefinition) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3189,7 +3254,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ConversionMemberFunction) {
+TEST_P(BuildSyntaxTreeTest, ConversionMemberFunction) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3211,7 +3276,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, LiteralOperatorDeclaration) {
+TEST_P(BuildSyntaxTreeTest, LiteralOperatorDeclaration) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3237,7 +3302,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, NumericLiteralOperatorTemplateDeclaration) {
+TEST_P(BuildSyntaxTreeTest, NumericLiteralOperatorTemplateDeclaration) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3268,7 +3333,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperatorDeclaration) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperatorDeclaration) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3298,7 +3363,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, OverloadedOperatorFriendDeclaration) {
+TEST_P(BuildSyntaxTreeTest, OverloadedOperatorFriendDeclaration) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3332,7 +3397,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ClassTemplateDeclaration) {
+TEST_P(BuildSyntaxTreeTest, ClassTemplateDeclaration) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3359,7 +3424,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, FunctionTemplateDeclaration) {
+TEST_P(BuildSyntaxTreeTest, FunctionTemplateDeclaration) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3388,7 +3453,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, VariableTemplateDeclaration) {
+TEST_P(BuildSyntaxTreeTest, VariableTemplateDeclaration) {
   if (!GetParam().isCXX14OrLater()) {
     return;
   }
@@ -3416,7 +3481,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, StaticMemberFunctionTemplate) {
+TEST_P(BuildSyntaxTreeTest, StaticMemberFunctionTemplate) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3447,7 +3512,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, NestedTemplates) {
+TEST_P(BuildSyntaxTreeTest, NestedTemplates) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3492,7 +3557,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, NestedTemplatesInNamespace) {
+TEST_P(BuildSyntaxTreeTest, NestedTemplatesInNamespace) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3545,7 +3610,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ClassTemplate_MemberClassDefinition) {
+TEST_P(BuildSyntaxTreeTest, ClassTemplate_MemberClassDefinition) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3578,7 +3643,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ExplicitClassTemplateInstantation_Definition) {
+TEST_P(BuildSyntaxTreeTest, ExplicitClassTemplateInstantation_Definition) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3600,7 +3665,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ExplicitClassTemplateInstantation_Declaration) {
+TEST_P(BuildSyntaxTreeTest, ExplicitClassTemplateInstantation_Declaration) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3623,7 +3688,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ClassTemplateSpecialization_Partial) {
+TEST_P(BuildSyntaxTreeTest, ClassTemplateSpecialization_Partial) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3653,7 +3718,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ClassTemplateSpecialization_Full) {
+TEST_P(BuildSyntaxTreeTest, ClassTemplateSpecialization_Full) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3679,7 +3744,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, EmptyDeclaration) {
+TEST_P(BuildSyntaxTreeTest, EmptyDeclaration) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 ;
@@ -3691,7 +3756,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, StaticAssert) {
+TEST_P(BuildSyntaxTreeTest, StaticAssert) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3714,7 +3779,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, StaticAssert_WithoutMessage) {
+TEST_P(BuildSyntaxTreeTest, StaticAssert_WithoutMessage) {
   if (!GetParam().isCXX17OrLater()) {
     return;
   }
@@ -3734,7 +3799,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ExternC) {
+TEST_P(BuildSyntaxTreeTest, ExternC) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3771,7 +3836,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, NonModifiableNodes) {
+TEST_P(BuildSyntaxTreeTest, NonModifiableNodes) {
   // Some nodes are non-modifiable, they are marked with 'I:'.
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
@@ -3812,7 +3877,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ModifiableNodes) {
+TEST_P(BuildSyntaxTreeTest, ModifiableNodes) {
   // All nodes can be mutated.
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
@@ -3858,7 +3923,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, InitDeclarator_Equal) {
+TEST_P(BuildSyntaxTreeTest, InitDeclarator_Equal) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -3880,7 +3945,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, InitDeclarator_Brace) {
+TEST_P(BuildSyntaxTreeTest, InitDeclarator_Brace) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3934,7 +3999,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, InitDeclarator_EqualBrace) {
+TEST_P(BuildSyntaxTreeTest, InitDeclarator_EqualBrace) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -3991,7 +4056,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, InitDeclarator_Paren) {
+TEST_P(BuildSyntaxTreeTest, InitDeclarator_Paren) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4034,7 +4099,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, InitDeclarator_Paren_DefaultArguments) {
+TEST_P(BuildSyntaxTreeTest, InitDeclarator_Paren_DefaultArguments) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4084,7 +4149,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ImplicitConversion_Argument) {
+TEST_P(BuildSyntaxTreeTest, ImplicitConversion_Argument) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4111,7 +4176,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ImplicitConversion_Return) {
+TEST_P(BuildSyntaxTreeTest, ImplicitConversion_Return) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4133,7 +4198,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ConstructorCall_ZeroArguments) {
+TEST_P(BuildSyntaxTreeTest, ConstructorCall_ZeroArguments) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4157,7 +4222,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ConstructorCall_OneArgument) {
+TEST_P(BuildSyntaxTreeTest, ConstructorCall_OneArgument) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4183,7 +4248,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ConstructorCall_MultipleArguments) {
+TEST_P(BuildSyntaxTreeTest, ConstructorCall_MultipleArguments) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4212,7 +4277,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ConstructorCall_DefaultArguments) {
+TEST_P(BuildSyntaxTreeTest, ConstructorCall_DefaultArguments) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4254,7 +4319,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, TypeConversion_FunctionalNotation) {
+TEST_P(BuildSyntaxTreeTest, TypeConversion_FunctionalNotation) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4277,7 +4342,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ArrayDeclarator_Simple) {
+TEST_P(BuildSyntaxTreeTest, ArrayDeclarator_Simple) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int a[10];
@@ -4297,7 +4362,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ArrayDeclarator_Multidimensional) {
+TEST_P(BuildSyntaxTreeTest, ArrayDeclarator_Multidimensional) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int b[1][2][3];
@@ -4327,7 +4392,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ArrayDeclarator_UnknownBound) {
+TEST_P(BuildSyntaxTreeTest, ArrayDeclarator_UnknownBound) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int c[] = {1,2,3};
@@ -4358,7 +4423,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ArrayDeclarator_Static) {
+TEST_P(BuildSyntaxTreeTest, ArrayDeclarator_Static) {
   if (!GetParam().isC99OrLater()) {
     return;
   }
@@ -4390,7 +4455,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Empty) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Empty) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int func();
@@ -4408,7 +4473,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Named) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Named) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int func1(int a);
@@ -4465,7 +4530,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Unnamed) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Unnamed) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int func1(int);
@@ -4515,7 +4580,8 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Default_One) {
+TEST_P(BuildSyntaxTreeTest,
+       ParametersAndQualifiers_InFreeFunctions_Default_One) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4535,7 +4601,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest,
+TEST_P(BuildSyntaxTreeTest,
        ParametersAndQualifiers_InFreeFunctions_Default_Multiple) {
   if (!GetParam().isCXX()) {
     return;
@@ -4570,7 +4636,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest,
+TEST_P(BuildSyntaxTreeTest,
        ParametersAndQualifiers_InVariadicFunctionTemplate_ParameterPack) {
   if (!GetParam().isCXX11OrLater() || GetParam().hasDelayedTemplateParsing()) {
     return;
@@ -4599,7 +4665,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest,
+TEST_P(BuildSyntaxTreeTest,
        ParametersAndQualifiers_InVariadicFunctionTemplate_NamedParameterPack) {
   if (!GetParam().isCXX11OrLater() || GetParam().hasDelayedTemplateParsing()) {
     return;
@@ -4632,7 +4698,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest,
+TEST_P(BuildSyntaxTreeTest,
        ParametersAndQualifiers_InFreeFunctions_VariadicArguments) {
   if (!GetParam().isCXX11OrLater()) {
     return;
@@ -4661,7 +4727,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest,
+TEST_P(BuildSyntaxTreeTest,
        ParametersAndQualifiers_InFreeFunctions_Cxx_CvQualifiers) {
   if (!GetParam().isCXX()) {
     return;
@@ -4702,7 +4768,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Cxx_Ref) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Cxx_Ref) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4729,7 +4795,8 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InFreeFunctions_Cxx11_RefRef) {
+TEST_P(BuildSyntaxTreeTest,
+       ParametersAndQualifiers_InFreeFunctions_Cxx11_RefRef) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -4756,7 +4823,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_Simple) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_Simple) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4785,7 +4852,8 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_CvQualifiers) {
+TEST_P(BuildSyntaxTreeTest,
+       ParametersAndQualifiers_InMemberFunctions_CvQualifiers) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -4833,7 +4901,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_Ref) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_Ref) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -4856,7 +4924,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_RefRef) {
+TEST_P(BuildSyntaxTreeTest, ParametersAndQualifiers_InMemberFunctions_RefRef) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -4879,7 +4947,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, TrailingReturn) {
+TEST_P(BuildSyntaxTreeTest, TrailingReturn) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -4903,7 +4971,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, DynamicExceptionSpecification) {
+TEST_P(BuildSyntaxTreeTest, DynamicExceptionSpecification) {
   if (!GetParam().supportsCXXDynamicExceptionSpecification()) {
     return;
   }
@@ -4975,7 +5043,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, NoexceptExceptionSpecification) {
+TEST_P(BuildSyntaxTreeTest, NoexceptExceptionSpecification) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -5011,7 +5079,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, DeclaratorsInParentheses) {
+TEST_P(BuildSyntaxTreeTest, DeclaratorsInParentheses) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 int (a);
@@ -5071,7 +5139,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Declaration_ConstVolatileQualifiers_SimpleConst) {
+TEST_P(BuildSyntaxTreeTest, Declaration_ConstVolatileQualifiers_SimpleConst) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 const int west = -1;
@@ -5102,7 +5170,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Declaration_ConstVolatileQualifiers_MultipleConst) {
+TEST_P(BuildSyntaxTreeTest, Declaration_ConstVolatileQualifiers_MultipleConst) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 const int const universal = 0;
@@ -5122,7 +5190,8 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, Declaration_ConstVolatileQualifiers_ConstAndVolatile) {
+TEST_P(BuildSyntaxTreeTest,
+       Declaration_ConstVolatileQualifiers_ConstAndVolatile) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 const int const *const *volatile b;
@@ -5143,7 +5212,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, RangesOfDeclaratorsWithTrailingReturnTypes) {
+TEST_P(BuildSyntaxTreeTest, RangesOfDeclaratorsWithTrailingReturnTypes) {
   if (!GetParam().isCXX11OrLater()) {
     return;
   }
@@ -5183,7 +5252,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, MemberPointers) {
+TEST_P(BuildSyntaxTreeTest, MemberPointers) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -5218,7 +5287,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, MemberFunctionPointer) {
+TEST_P(BuildSyntaxTreeTest, MemberFunctionPointer) {
   if (!GetParam().isCXX()) {
     return;
   }
@@ -5304,7 +5373,7 @@
 )txt"}));
 }
 
-TEST_P(SyntaxTreeTest, ComplexDeclarator) {
+TEST_P(BuildSyntaxTreeTest, ComplexDeclarator) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 void x(char a, short (*b)(int));
@@ -5342,7 +5411,7 @@
 )txt"));
 }
 
-TEST_P(SyntaxTreeTest, ComplexDeclarator2) {
+TEST_P(BuildSyntaxTreeTest, ComplexDeclarator2) {
   EXPECT_TRUE(treeDumpEqual(
       R"cpp(
 void x(char a, short (*b)(int), long (**c)(long long));
diff --git a/clang/unittests/Tooling/Syntax/CMakeLists.txt b/clang/unittests/Tooling/Syntax/CMakeLists.txt
--- a/clang/unittests/Tooling/Syntax/CMakeLists.txt
+++ b/clang/unittests/Tooling/Syntax/CMakeLists.txt
@@ -6,6 +6,7 @@
   TreeTestBase.cpp
   BuildTreeTest.cpp
   MutationsTest.cpp
+  SynthesisTest.cpp
   TokensTest.cpp
 )
 
diff --git a/clang/unittests/Tooling/Syntax/MutationsTest.cpp b/clang/unittests/Tooling/Syntax/MutationsTest.cpp
--- a/clang/unittests/Tooling/Syntax/MutationsTest.cpp
+++ b/clang/unittests/Tooling/Syntax/MutationsTest.cpp
@@ -19,15 +19,12 @@
 
 namespace {
 
-TEST_P(SyntaxTreeTest, Mutations) {
-  if (!GetParam().isCXX11OrLater()) {
-    return;
-  }
-
-  using Transformation = std::function<void(
-      const llvm::Annotations & /*Input*/, syntax::TranslationUnit * /*Root*/)>;
-  auto CheckTransformation = [this](std::string Input, std::string Expected,
-                                    Transformation Transform) -> void {
+class MutationTest : public SyntaxTreeTest {
+protected:
+  using Transformation = std::function<void(const llvm::Annotations & /*Input*/,
+                                            TranslationUnit * /*Root*/)>;
+  void CheckTransformation(Transformation Transform, std::string Input,
+                           std::string Expected) {
     llvm::Annotations Source(Input);
     auto *Root = buildTree(Source.code(), GetParam());
 
@@ -46,40 +43,32 @@
 
   // Removes the selected statement. Input should have exactly one selected
   // range and it should correspond to a single statement.
-  auto RemoveStatement = [this](const llvm::Annotations &Input,
-                                syntax::TranslationUnit *TU) {
-    auto *S = cast<syntax::Statement>(nodeByRange(Input.range(), TU));
+  Transformation RemoveStatement = [this](const llvm::Annotations &Input,
+                                          TranslationUnit *Root) {
+    auto *S = cast<syntax::Statement>(nodeByRange(Input.range(), Root));
     ASSERT_TRUE(S->canModify()) << "cannot remove a statement";
     syntax::removeStatement(*Arena, S);
     EXPECT_TRUE(S->isDetached());
     EXPECT_FALSE(S->isOriginal())
         << "node removed from tree cannot be marked as original";
   };
+};
 
-  std::vector<std::pair<std::string /*Input*/, std::string /*Expected*/>>
-      Cases = {
-          {"void test() { [[100+100;]] test(); }", "void test() {  test(); }"},
-          {"void test() { if (true) [[{}]] else {} }",
-           "void test() { if (true) ; else {} }"},
-          {"void test() { [[;]] }", "void test() {  }"}};
-  for (const auto &C : Cases)
-    CheckTransformation(C.first, C.second, RemoveStatement);
-}
+INSTANTIATE_TEST_CASE_P(SyntaxTreeTests, MutationTest,
+                        ::testing::ValuesIn(allTestClangConfigs()), );
 
-TEST_P(SyntaxTreeTest, SynthesizedNodes) {
-  buildTree("", GetParam());
+TEST_P(MutationTest, RemoveStatement_InCompound) {
+  CheckTransformation(RemoveStatement, "void test() { [[100+100;]] test(); }",
+                      "void test() {  test(); }");
+}
 
-  auto *C = syntax::createPunctuation(*Arena, tok::comma);
-  ASSERT_NE(C, nullptr);
-  EXPECT_EQ(C->token()->kind(), tok::comma);
-  EXPECT_TRUE(C->canModify());
-  EXPECT_FALSE(C->isOriginal());
-  EXPECT_TRUE(C->isDetached());
+TEST_P(MutationTest, RemoveStatement_InCompound_Empty) {
+  CheckTransformation(RemoveStatement, "void test() { [[;]] }",
+                      "void test() {  }");
+}
 
-  auto *S = syntax::createEmptyStatement(*Arena);
-  ASSERT_NE(S, nullptr);
-  EXPECT_TRUE(S->canModify());
-  EXPECT_FALSE(S->isOriginal());
-  EXPECT_TRUE(S->isDetached());
+TEST_P(MutationTest, RemoveStatement_LeaveEmpty) {
+  CheckTransformation(RemoveStatement, "void test() { if (1) [[{}]] else {} }",
+                      "void test() { if (1) ; else {} }");
 }
 } // namespace
diff --git a/clang/unittests/Tooling/Syntax/SynthesisTest.cpp b/clang/unittests/Tooling/Syntax/SynthesisTest.cpp
new file mode 100644
--- /dev/null
+++ b/clang/unittests/Tooling/Syntax/SynthesisTest.cpp
@@ -0,0 +1,44 @@
+//===- SynthesisTest.cpp --------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests synthesis API for syntax trees.
+//
+//===----------------------------------------------------------------------===//
+
+#include "TreeTestBase.h"
+#include "clang/Tooling/Syntax/BuildTree.h"
+
+using namespace clang;
+using namespace clang::syntax;
+
+namespace {
+
+INSTANTIATE_TEST_CASE_P(SyntaxTreeTests, SyntaxTreeTest,
+                        ::testing::ValuesIn(allTestClangConfigs()), );
+
+TEST_P(SyntaxTreeTest, Leaf_Punctuation) {
+  buildTree("", GetParam());
+
+  auto *C = syntax::createPunctuation(*Arena, tok::comma);
+  ASSERT_NE(C, nullptr);
+  EXPECT_EQ(C->token()->kind(), tok::comma);
+  EXPECT_TRUE(C->canModify());
+  EXPECT_FALSE(C->isOriginal());
+  EXPECT_TRUE(C->isDetached());
+}
+
+TEST_P(SyntaxTreeTest, Statement_Empty) {
+  buildTree("", GetParam());
+
+  auto *S = syntax::createEmptyStatement(*Arena);
+  ASSERT_NE(S, nullptr);
+  EXPECT_TRUE(S->canModify());
+  EXPECT_FALSE(S->isOriginal());
+  EXPECT_TRUE(S->isDetached());
+}
+} // namespace
diff --git a/clang/unittests/Tooling/Syntax/TreeTestBase.h b/clang/unittests/Tooling/Syntax/TreeTestBase.h
--- a/clang/unittests/Tooling/Syntax/TreeTestBase.h
+++ b/clang/unittests/Tooling/Syntax/TreeTestBase.h
@@ -32,11 +32,6 @@
   TranslationUnit *buildTree(StringRef Code,
                              const TestClangConfig &ClangConfig);
 
-  ::testing::AssertionResult treeDumpEqual(StringRef Code, StringRef Tree);
-
-  ::testing::AssertionResult
-  treeDumpEqualOnAnnotations(StringRef CodeWithAnnotations,
-                             ArrayRef<StringRef> TreeDumps);
   /// Finds the deepest node in the tree that covers exactly \p R.
   /// FIXME: implement this efficiently and move to public syntax tree API.
   syntax::Node *nodeByRange(llvm::Annotations::Range R, syntax::Node *Root);
@@ -56,6 +51,8 @@
   std::unique_ptr<syntax::TokenBuffer> TB;
   std::unique_ptr<syntax::Arena> Arena;
 };
+
+std::vector<TestClangConfig> allTestClangConfigs();
 } // namespace syntax
 } // namespace clang
 #endif // LLVM_CLANG_UNITTESTS_TOOLING_SYNTAX_TREETESTBASE_H
diff --git a/clang/unittests/Tooling/Syntax/TreeTestBase.cpp b/clang/unittests/Tooling/Syntax/TreeTestBase.cpp
--- a/clang/unittests/Tooling/Syntax/TreeTestBase.cpp
+++ b/clang/unittests/Tooling/Syntax/TreeTestBase.cpp
@@ -43,8 +43,9 @@
   return llvm::makeArrayRef(T->firstLeaf()->token(),
                             T->lastLeaf()->token() + 1);
 }
+} // namespace
 
-std::vector<TestClangConfig> allTestClangConfigs() {
+std::vector<TestClangConfig> clang::syntax::allTestClangConfigs() {
   std::vector<TestClangConfig> all_configs;
   for (TestLanguage lang : {Lang_C89, Lang_C99, Lang_CXX03, Lang_CXX11,
                             Lang_CXX14, Lang_CXX17, Lang_CXX20}) {
@@ -61,10 +62,6 @@
   return all_configs;
 }
 
-INSTANTIATE_TEST_CASE_P(SyntaxTreeTests, SyntaxTreeTest,
-                        testing::ValuesIn(allTestClangConfigs()), );
-} // namespace
-
 syntax::TranslationUnit *
 SyntaxTreeTest::buildTree(StringRef Code, const TestClangConfig &ClangConfig) {
   // FIXME: this code is almost the identical to the one in TokensTest. Share
@@ -161,62 +158,6 @@
   return Root;
 }
 
-::testing::AssertionResult SyntaxTreeTest::treeDumpEqual(StringRef Code,
-                                                         StringRef Tree) {
-  SCOPED_TRACE(llvm::join(GetParam().getCommandLineArgs(), " "));
-
-  auto *Root = buildTree(Code, GetParam());
-  if (Diags->getClient()->getNumErrors() != 0) {
-    return ::testing::AssertionFailure()
-           << "Source file has syntax errors, they were printed to the test "
-              "log";
-  }
-  auto Actual = StringRef(Root->dump(Arena->sourceManager())).trim().str();
-  // EXPECT_EQ shows the diff between the two strings if they are different.
-  EXPECT_EQ(Tree.trim().str(), Actual);
-  if (Actual != Tree.trim().str()) {
-    return ::testing::AssertionFailure();
-  }
-  return ::testing::AssertionSuccess();
-}
-
-::testing::AssertionResult
-SyntaxTreeTest::treeDumpEqualOnAnnotations(StringRef CodeWithAnnotations,
-                                           ArrayRef<StringRef> TreeDumps) {
-  SCOPED_TRACE(llvm::join(GetParam().getCommandLineArgs(), " "));
-
-  auto AnnotatedCode = llvm::Annotations(CodeWithAnnotations);
-  auto *Root = buildTree(AnnotatedCode.code(), GetParam());
-
-  if (Diags->getClient()->getNumErrors() != 0) {
-    return ::testing::AssertionFailure()
-           << "Source file has syntax errors, they were printed to the test "
-              "log";
-  }
-
-  auto AnnotatedRanges = AnnotatedCode.ranges();
-  if (AnnotatedRanges.size() != TreeDumps.size()) {
-    return ::testing::AssertionFailure()
-           << "The number of annotated ranges in the source code is different "
-              "to the number of their corresponding tree dumps.";
-  }
-  bool Failed = false;
-  for (unsigned i = 0; i < AnnotatedRanges.size(); i++) {
-    auto *AnnotatedNode = nodeByRange(AnnotatedRanges[i], Root);
-    assert(AnnotatedNode);
-    auto AnnotatedNodeDump =
-        StringRef(AnnotatedNode->dump(Arena->sourceManager())).trim().str();
-    // EXPECT_EQ shows the diff between the two strings if they are different.
-    EXPECT_EQ(TreeDumps[i].trim().str(), AnnotatedNodeDump)
-        << "Dumps diverged for the code:\n"
-        << AnnotatedCode.code().slice(AnnotatedRanges[i].Begin,
-                                      AnnotatedRanges[i].End);
-    if (AnnotatedNodeDump != TreeDumps[i].trim().str())
-      Failed = true;
-  }
-  return Failed ? ::testing::AssertionFailure() : ::testing::AssertionSuccess();
-}
-
 syntax::Node *SyntaxTreeTest::nodeByRange(llvm::Annotations::Range R,
                                           syntax::Node *Root) {
   ArrayRef<syntax::Token> Toks = tokens(Root);