[test] Convert CommandScriptImmediateOutput from pexpect to lit

[JDevlieghere]

Summary

This converts the CommandScriptImmediateOutput test from a python test using pexpect to a regular lit test.

[labath]

lldb/lit/Commands/CommandScriptImmediateOutput/CommandScriptImmediateOutputFile.test

5–6

The original test writes to all files it checks. I believe the idea is to check that the stuff should be there really is, and stuff that shouldn't be isn't. So the new test should probably do that too, and have a negative check that e.g. mode "w" overwrites the initial echoed string.

11–16

Based on some earlier attempts, I think windows will have a problem with the nested quotes. That's why most tests uses -s %s or something like that. Though doing that is a bit tricky here...
Since we're already kind of assuming that %t does not contain spaces, you might be able to get away with just dropping the inner set of quotes.

[JDevlieghere]

Feedback Pavel

lldb/lit/Commands/CommandScriptImmediateOutput/CommandScriptImmediateOutputConsole.test

+# Test that LLDB correctly allows scripted commands to set immediate output to
+# the console.
+
+# RUN: %lldb -s %s \
+# RUN:  -o 'command script import %S/Inputs/custom_command.py' \
+# RUN:  -o 'command script add -f custom_command.command_function mycommand' \
+# RUN:  -o 'mycommand' \
+# RUN:  -o 'command script delete mycommand' \
+# RUN:  2>&1 | FileCheck %s
+
+# CHECK: this is a test string, just a test string

lldb/lit/Commands/CommandScriptImmediateOutput/CommandScriptImmediateOutputFile.test

+# Test that LLDB correctly allows scripted commands to set immediate output to
+# a file.
+
+# RUN: echo "READ" > %t.read.txt
+# RUN: echo "WRITE" > %t.write.txt
+# RUN: echo "APPEND" > %t.append.txt
+# RUN: echo "READ PLUS" > %t.read_plus.txt
+# RUN: echo "WRITE PLUS" > %t.write_plus.txt
+# RUN: echo "APPEND PLUS" > %t.append_plus.txt
+
+# RUN: %lldb -s %s \
+# RUN:   -o 'command script import %S/Inputs/custom_command.py' \
+# RUN:   -o 'command script add -f custom_command.write_file mywrite' \
+# RUN:   -o 'mywrite %t.read.txt r' \
+# RUN:   -o 'mywrite %t.write.txt w' \
+# RUN:   -o 'mywrite %t.append.txt a' \
+# RUN:   -o 'mywrite %t.write_plus.txt w+' \
+# RUN:   -o 'mywrite %t.read_plus.txt r+' \
+# RUN:   -o 'mywrite %t.append_plus.txt a+' \
+# RUN:   -o 'command script delete mywrite'
+
+# RUN: cat %t.read.txt | FileCheck %s --check-prefix READ
+# READ: READ
+# READ-NOT: writing to file with mode
+
+# RUN: cat %t.write.txt | FileCheck %s --check-prefix WRITE
+# WRITE-NOT: WRITE
+# WRITE: writing to file with mode: w
+
+# RUN: cat %t.append.txt | FileCheck %s --check-prefix APPEND
+# APPEND: APPEND
+# APPEND-NEXT: writing to file with mode: a
+
+# RUN: cat %t.write_plus.txt | FileCheck %s --check-prefix WRITEPLUS
+# WRITEPLUS-NOT: WRITE PLUS
+# WRITEPLUS: writing to file with mode: w+
+
+# RUN: cat %t.read_plus.txt | FileCheck %s --check-prefix READPLUS
+# READPLUS-NOT: READ PLUS
+# READPLUS: writing to file with mode: r+
+
+# RUN: cat %t.append_plus.txt | FileCheck %s --check-prefix APPENDPLUS
+# APPENDPLUS: APPEND PLUS
+# APPENDPLUS-NEXT: writing to file with mode: a+
+
+# RUN: rm %t.read.txt
+# RUN: rm %t.write.txt
+# RUN: rm %t.append.txt
+# RUN: rm %t.write_plus.txt
+# RUN: rm %t.read_plus.txt
+# RUN: rm %t.append_plus.txt

lldb/packages/Python/lldbsuite/test/functionalities/command_script_immediate_output/TestCommandScriptImmediateOutput.py

-"""
-Test that LLDB correctly allows scripted commands to set an immediate output file
-"""
-
-from __future__ import print_function
-
-
-import os
-import time
-import lldb
-from lldbsuite.test.decorators import *
-from lldbsuite.test.lldbtest import *
-from lldbsuite.test.lldbpexpect import *
-from lldbsuite.test import lldbutil
-
-
-class CommandScriptImmediateOutputTestCase (PExpectTest):
-
-    mydir = TestBase.compute_mydir(__file__)
-    NO_DEBUG_INFO_TESTCASE = True
-
-    def setUp(self):
-        # Call super's setUp().
-        PExpectTest.setUp(self)
-
-    @skipIfRemote  # test not remote-ready llvm.org/pr24813
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
-    @expectedFailureAll(oslist=["freebsd"], bugnumber="llvm.org/pr26139")
-    @skipIfDarwin
-    def test_command_script_immediate_output_console(self):
-        """Test that LLDB correctly allows scripted commands to set immediate output to the console."""
-        prompt = "\(lldb\) "
-        self.launch(timeout=10)
-        self.expect(prompt)
-
-        script = os.path.join(self.getSourceDir(), 'custom_command.py')
-        prompt = "\(lldb\) "
-
-        self.sendline('command script import %s' % script, patterns=[prompt])
-        self.sendline(
-            'command script add -f custom_command.command_function mycommand',
-            patterns=[prompt])
-        self.sendline(
-            'mycommand',
-            patterns='this is a test string, just a test string')
-        self.sendline('command script delete mycommand', patterns=[prompt])
-        self.quit()
-
-    @skipIfRemote  # test not remote-ready llvm.org/pr24813
-    @expectedFailureAll(
-        oslist=["windows"],
-        bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
-    @expectedFailureAll(oslist=["freebsd"], bugnumber="llvm.org/pr26139")
-    @skipIfDarwin
-    def test_command_script_immediate_output_file(self):
-        """Test that LLDB correctly allows scripted commands to set immediate output to a file."""
-        prompt = "\(lldb\) "
-        self.launch(timeout=10)
-        self.expect(prompt)
-
-        test_files = {self.getBuildArtifact('read.txt'): 'r',
-                      self.getBuildArtifact('write.txt'): 'w',
-                      self.getBuildArtifact('append.txt'): 'a',
-                      self.getBuildArtifact('write_plus.txt'): 'w+',
-                      self.getBuildArtifact('read_plus.txt'): 'r+',
-                      self.getBuildArtifact('append_plus.txt'): 'a+'}
-
-        starter_string = 'Starter Garbage\n'
-        write_string = 'writing to file with mode: '
-
-        for path, mode in test_files.items():
-            with open(path, 'w+') as init:
-                init.write(starter_string)
-
-        script = os.path.join(self.getSourceDir(), 'custom_command.py')
-
-        self.sendline('command script import %s' % script, patterns=[prompt])
-
-        self.sendline(
-            'command script add -f custom_command.write_file mywrite',
-            patterns=[prompt])
-        for path, mode in test_files.items():
-            command = 'mywrite "' + path + '" ' + mode
-
-            self.sendline(command, patterns=[prompt])
-
-        self.sendline('command script delete mywrite', patterns=[prompt])
-
-        self.quit()
-
-        for path, mode in test_files.items():
-            with open(path, 'r') as result:
-                if mode in ['r', 'a', 'a+']:
-                    self.assertEquals(result.readline(), starter_string)
-                if mode in ['w', 'w+', 'r+', 'a', 'a+']:
-                    self.assertEquals(
-                        result.readline(), write_string + mode + '\n')
-
-            self.assertTrue(os.path.isfile(path))