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// Copyright 2019 The Dawn Authors
//
// 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 <gmock/gmock-matchers.h>
#include <gtest/gtest.h>
#include "common/Assert.h"
#include "common/SystemUtils.h"
using ::testing::_;
using ::testing::Pair;
// Tests for GetEnvironmentVar
TEST(SystemUtilsTests, GetEnvironmentVar) {
// Test nonexistent environment variable
EXPECT_THAT(GetEnvironmentVar("NonexistentEnvironmentVar"), Pair("", false));
}
// Tests for SetEnvironmentVar
TEST(SystemUtilsTests, SetEnvironmentVar) {
// Test new environment variable
EXPECT_TRUE(SetEnvironmentVar("EnvironmentVarForTest", "NewEnvironmentVarValue"));
EXPECT_THAT(GetEnvironmentVar("EnvironmentVarForTest"), Pair("NewEnvironmentVarValue", true));
// Test override environment variable
EXPECT_TRUE(SetEnvironmentVar("EnvironmentVarForTest", "OverrideEnvironmentVarValue"));
EXPECT_THAT(GetEnvironmentVar("EnvironmentVarForTest"),
Pair("OverrideEnvironmentVarValue", true));
}
// Tests for GetExecutableDirectory
TEST(SystemUtilsTests, GetExecutableDirectory) {
// Test returned value is non-empty string
EXPECT_NE(GetExecutableDirectory(), "");
// Test last charecter in path
EXPECT_EQ(GetExecutableDirectory().back(), *GetPathSeparator());
}
// Tests for ScopedEnvironmentVar
TEST(SystemUtilsTests, ScopedEnvironmentVar) {
SetEnvironmentVar("ScopedEnvironmentVarForTest", "original");
// Test empty environment variable doesn't crash
{ ScopedEnvironmentVar var; }
// Test setting empty environment variable
{
ScopedEnvironmentVar var;
var.Set("ScopedEnvironmentVarForTest", "NewEnvironmentVarValue");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"),
Pair("NewEnvironmentVarValue", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("original", true));
// Test that the environment variable can be set, and it is unset at the end of the scope.
{
ScopedEnvironmentVar var("ScopedEnvironmentVarForTest", "NewEnvironmentVarValue");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"),
Pair("NewEnvironmentVarValue", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("original", true));
// Test nested scopes
{
ScopedEnvironmentVar outer("ScopedEnvironmentVarForTest", "outer");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("outer", true));
{
ScopedEnvironmentVar inner("ScopedEnvironmentVarForTest", "inner");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("inner", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("outer", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("original", true));
// Test redundantly setting scoped variables
{
ScopedEnvironmentVar var1("ScopedEnvironmentVarForTest", "var1");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("var1", true));
ScopedEnvironmentVar var2("ScopedEnvironmentVarForTest", "var2");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("var2", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("original", true));
}
// Test that restoring a scoped environment variable to the empty string.
TEST(SystemUtilsTests, ScopedEnvironmentVarRestoresEmptyString) {
ScopedEnvironmentVar empty("ScopedEnvironmentVarForTest", "");
{
ScopedEnvironmentVar var1("ScopedEnvironmentVarForTest", "var1");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("var1", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("", true));
}
// Test that restoring a scoped environment variable to not set (distuishable from empty string)
// works.
TEST(SystemUtilsTests, ScopedEnvironmentVarRestoresNotSet) {
ScopedEnvironmentVar null("ScopedEnvironmentVarForTest", nullptr);
{
ScopedEnvironmentVar var1("ScopedEnvironmentVarForTest", "var1");
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("var1", true));
}
EXPECT_THAT(GetEnvironmentVar("ScopedEnvironmentVarForTest"), Pair("", false));
}