glslc/src/file_test.cc

// Copyright 2015 The Shaderc Authors. All rights reserved.
//
// 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.

#include "file.h"

#include <gtest/gtest.h>

namespace {

using glslc::GetFileExtension;
using glslc::IsStageFile;
using glslc::IsGlslFile;
using shaderc_util::string_piece;

class FileExtensionTest : public testing::Test {
 protected:
  string_piece empty = "";
  string_piece dot = ".";
  string_piece no_ext = "shader";
  string_piece trailing_dot = "shader.";
  string_piece vert_ext = "shader.vert";
  string_piece frag_ext = "shader.frag";
  string_piece tesc_ext = "shader.tesc";
  string_piece tese_ext = "shader.tese";
  string_piece geom_ext = "shader.geom";
  string_piece comp_ext = "shader.comp";
  string_piece glsl_ext = "shader.glsl";
  string_piece multi_dot = "shader.some..ext";
};

TEST_F(FileExtensionTest, GetFileExtension) {
  EXPECT_EQ("", GetFileExtension(empty));
  EXPECT_EQ("", GetFileExtension(dot));
  EXPECT_EQ("", GetFileExtension(no_ext));
  EXPECT_EQ("", GetFileExtension(trailing_dot));
  EXPECT_EQ("vert", GetFileExtension(vert_ext));
  EXPECT_EQ("frag", GetFileExtension(frag_ext));
  EXPECT_EQ("tesc", GetFileExtension(tesc_ext));
  EXPECT_EQ("tese", GetFileExtension(tese_ext));
  EXPECT_EQ("geom", GetFileExtension(geom_ext));
  EXPECT_EQ("comp", GetFileExtension(comp_ext));
  EXPECT_EQ("glsl", GetFileExtension(glsl_ext));
  EXPECT_EQ("ext", GetFileExtension(multi_dot));
}

TEST_F(FileExtensionTest, IsGlslFile) {
  EXPECT_FALSE(IsGlslFile(empty));
  EXPECT_FALSE(IsGlslFile(dot));
  EXPECT_FALSE(IsGlslFile(no_ext));
  EXPECT_FALSE(IsGlslFile(trailing_dot));
  EXPECT_FALSE(IsGlslFile(vert_ext));
  EXPECT_FALSE(IsGlslFile(frag_ext));
  EXPECT_FALSE(IsGlslFile(tesc_ext));
  EXPECT_FALSE(IsGlslFile(tese_ext));
  EXPECT_FALSE(IsGlslFile(geom_ext));
  EXPECT_FALSE(IsGlslFile(comp_ext));
  EXPECT_TRUE(IsGlslFile(glsl_ext));
  EXPECT_FALSE(IsGlslFile(multi_dot));
}

TEST_F(FileExtensionTest, IsStageFile) {
  EXPECT_FALSE(IsStageFile(empty));
  EXPECT_FALSE(IsStageFile(dot));
  EXPECT_FALSE(IsStageFile(no_ext));
  EXPECT_FALSE(IsStageFile(trailing_dot));
  EXPECT_TRUE(IsStageFile(vert_ext));
  EXPECT_TRUE(IsStageFile(frag_ext));
  EXPECT_TRUE(IsStageFile(tesc_ext));
  EXPECT_TRUE(IsStageFile(tese_ext));
  EXPECT_TRUE(IsStageFile(geom_ext));
  EXPECT_TRUE(IsStageFile(comp_ext));
  EXPECT_FALSE(IsStageFile(glsl_ext));
  EXPECT_FALSE(IsStageFile(multi_dot));
}

}  // anonymous namespace