Create new src/tests BUILD.gn file.

Move all test-related build stuff into its own BUILD.gn file. This
required moving the dawn_generator template into a common file, so it
can be called by both BUILD.gn and src/tests/BUILD.gn.

Bug: dawn:61

Change-Id: Icaa459270bdaa60306e053b93835812e70dba6f5
Reviewed-on: https://dawn-review.googlesource.com/c/2940
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>

src/tests/BUILD.gn

@@ -0,0 +1,140 @@
+# Copyright 2018 The Dawn Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build_overrides/build.gni")
+import("../../scripts/dawn_overrides_with_defaults.gni")
+import("${dawn_root}/scripts/dawn_features.gni")
+import("${dawn_root}/generator/dawn_generator.gni")
+
+import("//testing/test.gni")
+
+dawn_generator("mock_dawn_gen") {
+  target = "mock_dawn"
+  outputs = [
+    "mock/mock_dawn.h",
+    "mock/mock_dawn.cpp",
+  ]
+}
+
+test("dawn_unittests") {
+  configs += [ "${dawn_root}:dawn_internal" ]
+
+  deps = [
+    ":mock_dawn_gen",
+    "${dawn_root}:dawn_common",
+    "${dawn_root}:dawn_headers",
+    "${dawn_root}:dawn_utils",
+    "${dawn_root}:libdawn",
+    "${dawn_root}:libdawn_native_sources",
+    "${dawn_root}:libdawn_wire",
+    "${dawn_root}/third_party:gmock_and_gtest",
+  ]
+
+  # Add internal Dawn Native headers and config for internal unittests.
+  deps += [ "${dawn_root}:libdawn_native_headers" ]
+  configs += [ "${dawn_root}:libdawn_native_internal" ]
+
+  sources = get_target_outputs(":mock_dawn_gen")
+  sources += [
+    "unittests/BitSetIteratorTests.cpp",
+    "unittests/CommandAllocatorTests.cpp",
+    "unittests/EnumClassBitmasksTests.cpp",
+    "unittests/ErrorTests.cpp",
+    "unittests/MathTests.cpp",
+    "unittests/ObjectBaseTests.cpp",
+    "unittests/PerStageTests.cpp",
+    "unittests/RefCountedTests.cpp",
+    "unittests/ResultTests.cpp",
+    "unittests/SerialMapTests.cpp",
+    "unittests/SerialQueueTests.cpp",
+    "unittests/ToBackendTests.cpp",
+    "unittests/WireTests.cpp",
+    "unittests/validation/BindGroupValidationTests.cpp",
+    "unittests/validation/BlendStateValidationTests.cpp",
+    "unittests/validation/BufferValidationTests.cpp",
+    "unittests/validation/CommandBufferValidationTests.cpp",
+    "unittests/validation/ComputeValidationTests.cpp",
+    "unittests/validation/CopyCommandsValidationTests.cpp",
+    "unittests/validation/DepthStencilStateValidationTests.cpp",
+    "unittests/validation/DynamicStateCommandValidationTests.cpp",
+    "unittests/validation/FenceValidationTests.cpp",
+    "unittests/validation/InputStateValidationTests.cpp",
+    "unittests/validation/PushConstantsValidationTests.cpp",
+    "unittests/validation/QueueSubmitValidationTests.cpp",
+    "unittests/validation/RenderPassDescriptorValidationTests.cpp",
+    "unittests/validation/RenderPipelineValidationTests.cpp",
+    "unittests/validation/ShaderModuleValidationTests.cpp",
+    "unittests/validation/TextureViewValidationTests.cpp",
+    "unittests/validation/ValidationTest.cpp",
+    "unittests/validation/ValidationTest.h",
+    "unittests/validation/VertexBufferValidationTests.cpp",
+  ]
+
+  if (dawn_enable_d3d12) {
+    sources += [ "unittests/d3d12/CopySplitTests.cpp" ]
+  }
+
+  # When building inside Chromium, use their gtest main function because it is
+  # needed to run in swarming correctly.
+  if (build_with_chromium) {
+    sources += [ "//gpu/dawn_unittests_main.cc" ]
+  } else {
+    sources += [ "UnittestsMain.cpp" ]
+  }
+}
+
+test("dawn_end2end_tests") {
+  configs += [ "${dawn_root}:dawn_internal" ]
+
+  deps = [
+    "${dawn_root}:dawn_common",
+    "${dawn_root}:dawn_utils",
+    "${dawn_root}:libdawn",
+    "${dawn_root}:libdawn_native",
+    "${dawn_root}:libdawn_wire",
+    "${dawn_root}/third_party:glfw",
+    "${dawn_root}/third_party:gmock_and_gtest",
+  ]
+
+  sources = [
+    "DawnTest.cpp",
+    "DawnTest.h",
+    "end2end/BasicTests.cpp",
+    "end2end/BindGroupTests.cpp",
+    "end2end/BlendStateTests.cpp",
+    "end2end/BufferTests.cpp",
+    "end2end/ComputeCopyStorageBufferTests.cpp",
+    "end2end/CopyTests.cpp",
+    "end2end/DepthStencilStateTests.cpp",
+    "end2end/DrawElementsTests.cpp",
+    "end2end/FenceTests.cpp",
+    "end2end/IndexFormatTests.cpp",
+    "end2end/InputStateTests.cpp",
+    "end2end/PrimitiveTopologyTests.cpp",
+    "end2end/PushConstantTests.cpp",
+    "end2end/RenderPassLoadOpTests.cpp",
+    "end2end/SamplerTests.cpp",
+    "end2end/ScissorTests.cpp",
+    "end2end/TextureViewTests.cpp",
+    "end2end/ViewportOrientationTests.cpp",
+  ]
+
+  # When building inside Chromium, use their gtest main function because it is
+  # needed to run in swarming correctly.
+  if (build_with_chromium) {
+    sources += [ "//gpu/dawn_end2end_tests_main.cc" ]
+  } else {
+    sources += [ "End2EndTestsMain.cpp" ]
+  }
+}