PruneUnusedFunctions_test.cpp

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Author : Stuart Morgan
Date : 2019-08-14 12:25:12
Hash : 9d737966
Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/tests/compiler_tests/PruneUnusedFunctions_test.cpp

//
// Copyright 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// PruneUnusedFunctions_test.cpp:
//   Test for the pruning of unused function with the SH_PRUNE_UNUSED_FUNCTIONS compile flag
//

#include "GLSLANG/ShaderLang.h"
#include "angle_gl.h"
#include "gtest/gtest.h"
#include "tests/test_utils/compiler_test.h"

using namespace sh;

namespace
{

class PruneUnusedFunctionsTest : public MatchOutputCodeTest
{
  public:
    PruneUnusedFunctionsTest() : MatchOutputCodeTest(GL_FRAGMENT_SHADER, 0, SH_ESSL_OUTPUT) {}

  protected:
    void compile(const std::string &shaderString, bool prune)
    {
        int compilationFlags = SH_VARIABLES | (prune ? 0 : SH_DONT_PRUNE_UNUSED_FUNCTIONS);
        MatchOutputCodeTest::compile(shaderString, compilationFlags);
    }
};

// Check that unused function and prototypes are removed iff the options is set
TEST_F(PruneUnusedFunctionsTest, UnusedFunctionAndProto)
{
    const std::string &shaderString =
        "precision mediump float;\n"
        "float unused(float a);\n"
        "void main() {\n"
        "    gl_FragColor = vec4(1.0);\n"
        "}\n"
        "float unused(float a) {\n"
        "    return a;\n"
        "}\n";
    compile(shaderString, true);
    EXPECT_TRUE(notFoundInCode("unused("));
    EXPECT_TRUE(foundInCode("main(", 1));

    compile(shaderString, false);
    EXPECT_TRUE(foundInCode("unused(", 2));
    EXPECT_TRUE(foundInCode("main(", 1));
}

// Check that unimplemented prototypes are removed iff the options is set
TEST_F(PruneUnusedFunctionsTest, UnimplementedPrototype)
{
    const std::string &shaderString =
        "precision mediump float;\n"
        "float unused(float a);\n"
        "void main() {\n"
        "    gl_FragColor = vec4(1.0);\n"
        "}\n";
    compile(shaderString, true);
    EXPECT_TRUE(notFoundInCode("unused("));
    EXPECT_TRUE(foundInCode("main(", 1));

    compile(shaderString, false);
    EXPECT_TRUE(foundInCode("unused(", 1));
    EXPECT_TRUE(foundInCode("main(", 1));
}

// Check that used functions are not pruned (duh)
TEST_F(PruneUnusedFunctionsTest, UsedFunction)
{
    const std::string &shaderString =
        "precision mediump float;\n"
        "float used(float a);\n"
        "void main() {\n"
        "    gl_FragColor = vec4(used(1.0));\n"
        "}\n"
        "float used(float a) {\n"
        "    return a;\n"
        "}\n";
    compile(shaderString, true);
    EXPECT_TRUE(foundInCode("used(", 3));
    EXPECT_TRUE(foundInCode("main(", 1));

    compile(shaderString, false);
    EXPECT_TRUE(foundInCode("used(", 3));
    EXPECT_TRUE(foundInCode("main(", 1));
}

}  // namespace

kc3-lang/angle/src/tests/compiler_tests/PruneUnusedFunctions_test.cpp

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kc3-lang/angle /src/tests/compiler_tests/PruneUnusedFunctions_test.cpp