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41ce791926
Replaces the (temporary) compile-time option to pass engine switches with the ability to pass them temporarily at runtime via environment variables. This moves the recently-added code for doing this on Windows to a shared location for use by all desktop embeddings. This is enabled only for debug/profile to avoid potential issues with tampering with released applications, but if there is a need for that in the future it could be added (potentially with a whitelist, as is currently used for Dart VM flags). Temporarily adds a way to enable mirrors as a compile time option, as is already provided in the Linux embedding, to provide a migration path for the one remaining known need for compile-time options that has been raised in flutter/flutter#38569.
89 lines
2.8 KiB
C++
89 lines
2.8 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/common/cpp/engine_switches.h"
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#include "gtest/gtest.h"
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namespace flutter {
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namespace {
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// Sets |key=value| in the environment of this process.
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void SetEnvironmentVariable(const char* key, const char* value) {
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#ifdef _WIN32
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_putenv_s(key, value);
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#else
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setenv(key, value, 1);
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#endif
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}
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// Removes |key| from the environment of this process, if present.
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void ClearEnvironmentVariable(const char* key) {
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#ifdef _WIN32
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_putenv_s(key, "");
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#else
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unsetenv(key);
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#endif
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}
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} // namespace
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TEST(FlutterProjectBundle, SwitchesEmpty) {
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// Clear the main environment variable, since test order is not guaranteed.
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ClearEnvironmentVariable("FLUTTER_ENGINE_SWITCHES");
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EXPECT_EQ(GetSwitchesFromEnvironment().size(), 0U);
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}
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#ifdef FLUTTER_RELEASE
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TEST(FlutterProjectBundle, SwitchesIgnoredInRelease) {
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCHES", "2");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_1", "abc");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_2", "foo=\"bar, baz\"");
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std::vector<std::string> switches = GetSwitchesFromEnvironment();
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EXPECT_EQ(switches.size(), 0U);
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}
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#endif // FLUTTER_RELEASE
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#ifndef FLUTTER_RELEASE
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TEST(FlutterProjectBundle, Switches) {
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCHES", "2");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_1", "abc");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_2", "foo=\"bar, baz\"");
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std::vector<std::string> switches = GetSwitchesFromEnvironment();
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EXPECT_EQ(switches.size(), 2U);
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EXPECT_EQ(switches[0], "--abc");
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EXPECT_EQ(switches[1], "--foo=\"bar, baz\"");
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}
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TEST(FlutterProjectBundle, SwitchesExtraValues) {
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCHES", "1");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_1", "abc");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_2", "foo=\"bar, baz\"");
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std::vector<std::string> switches = GetSwitchesFromEnvironment();
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EXPECT_EQ(switches.size(), 1U);
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EXPECT_EQ(switches[0], "--abc");
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}
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TEST(FlutterProjectBundle, SwitchesMissingValues) {
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCHES", "4");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_1", "abc");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_2", "foo=\"bar, baz\"");
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ClearEnvironmentVariable("FLUTTER_ENGINE_SWITCH_3");
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SetEnvironmentVariable("FLUTTER_ENGINE_SWITCH_4", "oops");
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std::vector<std::string> switches = GetSwitchesFromEnvironment();
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EXPECT_EQ(switches.size(), 3U);
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EXPECT_EQ(switches[0], "--abc");
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EXPECT_EQ(switches[1], "--foo=\"bar, baz\"");
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// The missing switch should be skipped, leaving SWITCH_4 as the third
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// switch in the array.
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EXPECT_EQ(switches[2], "--oops");
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}
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#endif // !FLUTTER_RELEASE
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} // namespace flutter
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