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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import <Foundation/Foundation.h>
#import "testing/gtest/ios_enable_coverage.h"
#if !defined(NDEBUG) && BUILDFLAG(IOS_ENABLE_COVERAGE) && TARGET_OS_SIMULATOR
extern "C" void __llvm_profile_set_filename(const char* name);
#endif
namespace coverage_util {
void ConfigureCoverageReportPath() {
// Targets won't build on real devices with BUILDFLAG(IOS_ENABLE_COVERAGE)
// because of llvm library linking issue for arm64 architecture.
#if !defined(NDEBUG) && BUILDFLAG(IOS_ENABLE_COVERAGE) && TARGET_OS_SIMULATOR
static dispatch_once_t once_token;
dispatch_once(&once_token, ^{
// Writes the profraw file to the simulator shared resources directory,
// where the app has write rights, and will be preserved after app is
// killed.
NSString* shared_resources_path =
NSProcessInfo.processInfo
.environment[@"SIMULATOR_SHARED_RESOURCES_DIRECTORY"];
// UUID ensures that there won't be a conflict when multiple apps are
// launched in one test suite in EG2. %m enables on-line profile merging.
// %c helps preserve coverage data at crash.
NSString* file_name = [NSString
stringWithFormat:@"%@-%%m-%%c.profraw", NSUUID.UUID.UUIDString];
NSString* file_path =
[shared_resources_path stringByAppendingPathComponent:file_name];
// For documentation, see:
// http://clang.llvm.org/docs/SourceBasedCodeCoverage.html
__llvm_profile_set_filename(
[file_path cStringUsingEncoding:NSUTF8StringEncoding]);
// Print the path for easier retrieval.
NSLog(@"Coverage data at %@.", file_path);
});
#endif // !defined(NDEBUG) && BUILDFLAG(IOS_ENABLE_COVERAGE) &&
// TARGET_OS_SIMULATOR
}
} // namespace coverage_util
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