[LNT] API: add Tests resource.

[marxin]

Summary

Very similar to: https://reviews.llvm.org/D44007

It prints:

{"generated_by": "LNT Server v0.4.2.dev0", "tests": [{"id": 1, "name": "SPEC/SPEC2006/INT/400.perlbench/elf"}, {"id": 2, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/relocations"}, {"id": 3, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/symbols"}, {"id": 4, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/sections/text"}, {"id": 5, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/sections/debug"}, {"id": 6, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/sections/eh"}, {"id": 7, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/sections/data"}, {"id": 8, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/sections/rodata"}, {"id": 9, "name": "SPEC/SPEC2006/INT/400.perlbench/elf/sections/relocation"}, {"id": 10, "name": "SPEC/SPEC2006/INT/400.perlbench"}, {"id": 11, "name": "SPEC/SPEC2006/INT/401.bzip2/elf"}
...

[cmatthews]

Very useful. Thanks!

lnt/trunk/docs/api.rst

 |                           | each metric type. Empty samples are not sent.                                            |
 +---------------------------+------------------------------------------------------------------------------------------+
 | /samples/`id`             | Get all non-empty sample info for Sample `id`.                                           |
 +---------------------------+------------------------------------------------------------------------------------------+
 | /schema                   | Return test suite schema.                                                                |
 +---------------------------+------------------------------------------------------------------------------------------+
 | /fields                   | Return all fields in this testsuite.                                                     |
 +---------------------------+------------------------------------------------------------------------------------------+
+| /tests                    | Return all tests in this testsuite.                                                      |
++---------------------------+------------------------------------------------------------------------------------------+
 
 .. _auth_tokens:
 
 Write Operations
 ----------------
 
 The machines, orders and runs endpoints also support the DELETE http method.  The user must include a http header called
 "AuthToken" which has the API auth token set in the LNT instance configuration.

lnt/trunk/lnt/server/ui/api.py

class Fields(Resource):
 
     @staticmethod
     def get():
         ts = request.get_testsuite()
 
         result = common_fields_factory()
         result['fields'] = [{'column_id': i, 'column_name': f.column.name}
                 for i, f in enumerate(ts.sample_fields)]
+
+        return result
+
+class Tests(Resource):
+    """List all the tests in the test suite."""
+    method_decorators = [in_db]
+
+    @staticmethod
+    def get():
+        ts = request.get_testsuite()
+
+        result = common_fields_factory()
+        tests = request.session.query(ts.Test).all()
+        result['tests'] = [t.__json__() for t in tests]
+
         return result
 
 class Machines(Resource):
     """List all the machines and give summary information."""
     method_decorators = [in_db]
 
     @staticmethod
     def get():
def load_api_resources(api):
     def output_json(data, code, headers=None):
         '''Override output_json() to use LNT json encoder'''
         resp = make_response(json.dumps(data), code)
         resp.headers.add('Access-Control-Allow-Origin', '*')
         if headers is not None:
             resp.headers.extend(headers)
         return resp
 
+    api.add_resource(Tests, ts_path("tests"), ts_path("tests/"))
     api.add_resource(Fields, ts_path("fields"), ts_path("fields/"))
     api.add_resource(Machines, ts_path("machines"), ts_path("machines/"))
     api.add_resource(Machine, ts_path("machines/<machine_spec>"))
     api.add_resource(Runs, ts_path("runs"), ts_path("runs/"))
     api.add_resource(Run, ts_path("runs/<int:run_id>"))
     api.add_resource(SamplesData, ts_path("samples"), ts_path("samples/"))
     api.add_resource(SampleData, ts_path("samples/<sample_id>"))
     api.add_resource(Schema, ts_path("schema"), ts_path("schema/"))
     api.add_resource(Order, ts_path("orders/<int:order_id>"))
     graph_url = "graph/<int:machine_id>/<int:test_id>/<int:field_index>"
     api.add_resource(Graph, ts_path(graph_url))
     regression_url = \
         "regression/<int:machine_id>/<int:test_id>/<int:field_index>"
     api.add_resource(Regression, ts_path(regression_url))

lnt/trunk/tests/server/ui/test_api.py

def test_fields_api(self):
         # check number of fields
         self.assertEqual(9, len(fields))
 
         # check first field
         f0 = fields[0]
         self.assertEqual(0, f0['column_id'])
         self.assertEqual('compile_status', f0['column_name'])
 
+    def test_tests_api(self):
+        """Tests API."""
+        client = self.client
+        j = check_json(client, 'api/db_default/v4/nts/tests')
+
+        tests = j['tests']
+
+        # check number of tests
+        self.assertEqual(9, len(tests))
+
+        # check first test
+        t0 = tests[0]
+        self.assertEqual(1, t0['id'])
+        self.assertEqual('SingleSource/UnitTests/2006-12-01-float_varg', t0['name'])
+
     def test_schema(self):
         client = self.client
         rest_schema = check_json(client, 'api/db_default/v4/nts/schema')
 
         # The reported schema should be the same as the yaml one on the top.
         with open('%s/schemas/nts.yaml' % self.instance_path) as syaml:
             yaml_schema = yaml.load(syaml)
             # Do some massaging to make it similar to the rest API result.