1 //
2 // Copyright 2016 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6 // PruneEmptyDeclarations_test.cpp:
7 // Tests for pruning empty declarations.
8 //
9
10 #include "GLSLANG/ShaderLang.h"
11 #include "angle_gl.h"
12 #include "gtest/gtest.h"
13 #include "tests/test_utils/compiler_test.h"
14
15 using namespace sh;
16
17 namespace
18 {
19
20 class PruneEmptyDeclarationsTest : public MatchOutputCodeTest
21 {
22 public:
PruneEmptyDeclarationsTest()23 PruneEmptyDeclarationsTest()
24 : MatchOutputCodeTest(GL_VERTEX_SHADER, 0, SH_GLSL_COMPATIBILITY_OUTPUT)
25 {}
26 };
27
TEST_F(PruneEmptyDeclarationsTest,EmptyDeclarationStartsDeclaratorList)28 TEST_F(PruneEmptyDeclarationsTest, EmptyDeclarationStartsDeclaratorList)
29 {
30 const std::string shaderString =
31 "precision mediump float;\n"
32 "uniform float u;\n"
33 "void main()\n"
34 "{\n"
35 " float, f;\n"
36 " gl_Position = vec4(u * f);\n"
37 "}\n";
38 compile(shaderString);
39 ASSERT_TRUE(foundInCode("float _uf"));
40 ASSERT_TRUE(notFoundInCode("float, _uf"));
41 ASSERT_TRUE(notFoundInCode("float, f"));
42 ASSERT_TRUE(notFoundInCode("float _u, _uf"));
43 }
44
TEST_F(PruneEmptyDeclarationsTest,EmptyStructDeclarationWithQualifiers)45 TEST_F(PruneEmptyDeclarationsTest, EmptyStructDeclarationWithQualifiers)
46 {
47 const std::string shaderString =
48 "precision mediump float;\n"
49 "const struct S { float f; };\n"
50 "uniform S s;"
51 "void main()\n"
52 "{\n"
53 " gl_Position = vec4(s.f);\n"
54 "}\n";
55 compile(shaderString);
56 ASSERT_TRUE(foundInCode("struct _uS"));
57 ASSERT_TRUE(foundInCode("uniform _uS"));
58 ASSERT_TRUE(notFoundInCode("const struct _uS"));
59 }
60
61 } // namespace
62