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295a4177ae
In the Vulkan backend, we only need to set VK_LAYER_PATH and VK_ICD_FILENAMES while we're gathering the device information. After this, we should unset the environment variables or they will persist and affect loading Vulkan again (from Dawn or another client) in the future. Bug: dawn:406 Change-Id: I30c38b0980e181126fcd7fa911bbf9e8aa35f3b8 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/22021 Reviewed-by: Stephen White <senorblanco@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Austin Eng <enga@chromium.org>
87 lines
3.5 KiB
C++
87 lines
3.5 KiB
C++
// Copyright 2019 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <gtest/gtest.h>
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#include "common/SystemUtils.h"
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// Tests for GetEnvironmentVar
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TEST(SystemUtilsTests, GetEnvironmentVar) {
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// Test nonexistent environment variable
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ASSERT_EQ(GetEnvironmentVar("NonexistentEnvironmentVar"), "");
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}
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// Tests for SetEnvironmentVar
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TEST(SystemUtilsTests, SetEnvironmentVar) {
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// Test new environment variable
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ASSERT_TRUE(SetEnvironmentVar("EnvironmentVarForTest", "NewEnvironmentVarValue"));
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ASSERT_EQ(GetEnvironmentVar("EnvironmentVarForTest"), "NewEnvironmentVarValue");
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// Test override environment variable
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ASSERT_TRUE(SetEnvironmentVar("EnvironmentVarForTest", "OverrideEnvironmentVarValue"));
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ASSERT_EQ(GetEnvironmentVar("EnvironmentVarForTest"), "OverrideEnvironmentVarValue");
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}
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// Tests for GetExecutableDirectory
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TEST(SystemUtilsTests, GetExecutableDirectory) {
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// Test returned value is non-empty string
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ASSERT_NE(GetExecutableDirectory(), "");
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// Test last charecter in path
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ASSERT_EQ(GetExecutableDirectory().back(), *GetPathSeparator());
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}
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// Tests for ScopedEnvironmentVar
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TEST(SystemUtilsTests, ScopedEnvironmentVar) {
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SetEnvironmentVar("ScopedEnvironmentVarForTest", "original");
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// Test empty environment variable doesn't crash
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{ ScopedEnvironmentVar var; }
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// Test setting empty environment variable
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{
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ScopedEnvironmentVar var;
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var.Set("ScopedEnvironmentVarForTest", "NewEnvironmentVarValue");
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "NewEnvironmentVarValue");
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}
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "original");
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// Test that the environment variable can be set, and it is unset at the end of the scope.
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{
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ScopedEnvironmentVar var("ScopedEnvironmentVarForTest", "NewEnvironmentVarValue");
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "NewEnvironmentVarValue");
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}
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "original");
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// Test nested scopes
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{
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ScopedEnvironmentVar outer("ScopedEnvironmentVarForTest", "outer");
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "outer");
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{
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ScopedEnvironmentVar inner("ScopedEnvironmentVarForTest", "inner");
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "inner");
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}
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "outer");
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}
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "original");
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// Test redundantly setting scoped variables
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{
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ScopedEnvironmentVar var1("ScopedEnvironmentVarForTest", "var1");
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "var1");
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ScopedEnvironmentVar var2("ScopedEnvironmentVarForTest", "var2");
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "var2");
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}
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ASSERT_EQ(GetEnvironmentVar("ScopedEnvironmentVarForTest"), "original");
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}
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