Fine tuning glGetInternalformativ.

gpu/command_buffer/client/gles2_implementation_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Tests for GLES2Implementation.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <limits>
 
@@ skipping 3726 matching lines @@
   EXPECT_TRUE(mem != nullptr);
 
   std::vector<uint8_t> data(16);
   // DeleteBuffers unmaps the data store.
   gl_->DeleteBuffers(1, &kBufferId);
 
   EXPECT_FALSE(gl_->UnmapBuffer(GL_ARRAY_BUFFER));
   EXPECT_EQ(GL_INVALID_OPERATION, CheckError());
 }
 
+TEST_F(GLES2ImplementationTest, GetInternalformativ) {
+  const GLint kNumSampleCounts = 8;
+  struct Cmds {
+    cmds::GetInternalformativ cmd;
+  };
+  typedef cmds::GetInternalformativ::Result::Type ResultType;
+  ResultType result = 0;
+  Cmds expected;
+  ExpectedMemoryInfo result1 =
+      GetExpectedResultMemory(sizeof(uint32_t) + sizeof(ResultType));
+  expected.cmd.Init(123, GL_RGBA8, GL_NUM_SAMPLE_COUNTS,
+                    result1.id, result1.offset);
+  EXPECT_CALL(*command_buffer(), OnFlush())
+      .WillOnce(SetMemory(result1.ptr,
+                          SizedResultHelper<ResultType>(kNumSampleCounts)))
+      .RetiresOnSaturation();
+  gl_->GetInternalformativ(123, GL_RGBA8, GL_NUM_SAMPLE_COUNTS, 1, &result);
+  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
+  EXPECT_EQ(static_cast<ResultType>(kNumSampleCounts), result);
+}
+
 TEST_F(GLES2ImplementationManualInitTest, LoseContextOnOOM) {
   ContextInitOptions init_options;
   init_options.lose_context_when_out_of_memory = true;
   ASSERT_TRUE(Initialize(init_options));
 
   struct Cmds {
     cmds::LoseContextCHROMIUM cmd;
   };
 
   GLsizei max = std::numeric_limits<GLsizei>::max();
@@ skipping 39 matching lines @@
 TEST_F(GLES2ImplementationManualInitTest, FailInitOnTransferBufferFail) {
   ContextInitOptions init_options;
   init_options.transfer_buffer_initialize_fail = true;
   EXPECT_FALSE(Initialize(init_options));
 }
 
 #include "gpu/command_buffer/client/gles2_implementation_unittest_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu