// 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.

// This file implements mock GL Interface for unit testing. The interface
// corresponds to the set of functionally distinct GL functions defined in
// generate_bindings.py, which may originate from either desktop GL or GLES.

#ifndef UI_GL_GL_MOCK_H_
#define UI_GL_GL_MOCK_H_

#include "testing/gmock/include/gmock/gmock.h"
#include "ui/gl/gl_bindings.h"

namespace gl {

class MockGLInterface {
 public:
  MockGLInterface();
  virtual ~MockGLInterface();

  // Set the functions called from the mock GL implementation for the purposes
  // of testing.
  static void SetGLInterface(MockGLInterface* gl_interface);

  // Find an entry point to the mock GL implementation.
  static void* GL_BINDING_CALL GetGLProcAddress(const char* name);

  // Include the auto-generated parts of this class. We split this because
  // it means we can easily edit the non-auto generated parts right here in
  // this file instead of having to edit some template or the code generator.

  // Member functions
  #include "gl_mock_autogen_gl.h"

  // TODO(zmo): crbug.com/456340
  // Functions that cannot be mocked because they have more than 10 args.
  void CompressedTexSubImage3D(
      GLenum /*target*/, GLint /*level*/, GLint /*xoffset*/, GLint /*yoffset*/,
      GLint /*zoffset*/, GLsizei /*width*/, GLsizei /*height*/,
      GLsizei /*depth*/, GLenum /*format*/, GLsizei /*imageSize*/,
      const void* /*data*/) {
    NOTREACHED();
  }

  void TexSubImage3D(
      GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset,
      GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type,
      const void* pixels) {
    if (pixels == nullptr) {
      TexSubImage3DNoData(target, level, xoffset, yoffset, zoffset,
                          width, height, depth, format, type);
    } else {
      NOTREACHED();
    }
  }

  MOCK_METHOD10(TexSubImage3DNoData,
                void(GLenum target,
                     GLint level,
                     GLint xoffset,
                     GLint yoffset,
                     GLint zoffset,
                     GLsizei width,
                     GLsizei height,
                     GLsizei depth,
                     GLenum format,
                     GLenum type));

 private:
  static MockGLInterface* interface_;

  // Static mock functions that invoke the member functions of interface_.
  #include "gl_bindings_autogen_mock.h"

  static void GL_BINDING_CALL Mock_glTexSubImage3DNoData(
      GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset,
      GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type);
};

}  // namespace gl

#endif  // UI_GL_GL_MOCK_H_
