mirror of
https://github.com/kidfromjupiter/nearby.git
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115 lines
3.8 KiB
Plaintext
115 lines
3.8 KiB
Plaintext
// Copyright 2020 Google LLC
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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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// https://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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#import <XCTest/XCTest.h>
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#include <utility>
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#include "absl/time/time.h"
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#include "internal/platform/implementation/cancelable.h"
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#include "internal/platform/implementation/executor.h"
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#include "internal/platform/implementation/platform.h"
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#include "internal/platform/implementation/submittable_executor.h"
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#include "internal/platform/runnable.h"
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using ::nearby::Runnable;
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using ::nearby::api::ImplementationPlatform;
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using MultiThreadExecutor = ::nearby::api::SubmittableExecutor;
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@interface GNCMultiThreadExecutorTest : XCTestCase
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@property(atomic) int counter;
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@property(atomic) int otherCounter;
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@end
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@implementation GNCMultiThreadExecutorTest
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// Creates a MultiThreadExecutor.
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- (std::unique_ptr<MultiThreadExecutor>)executor {
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std::unique_ptr<MultiThreadExecutor> executor =
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ImplementationPlatform::CreateMultiThreadExecutor(4);
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XCTAssert(executor != nullptr);
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return executor;
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}
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// Tests that the executor executes runnables as expected.
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- (void)testExecute {
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std::unique_ptr<MultiThreadExecutor> executor([self executor]);
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// Execute two runnables that increment the counter.
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const int kIncrements = 13;
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for (int i = 0; i < kIncrements; i++) {
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executor->Execute([self]() { self.counter++; });
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[NSThread sleepForTimeInterval:0.01];
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}
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// Check that the counter has the expected value after giving the runnables time to run.
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XCTAssertLessThanOrEqual(abs(self.counter - kIncrements), 0);
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}
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// Tests that the executor submits runnables as expected.
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- (void)testSubmit {
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std::unique_ptr<MultiThreadExecutor> executor([self executor]);
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// Submit two runnables that increment the counter.
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const int kIncrements = 13;
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for (int i = 0; i < kIncrements; i++) {
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executor->DoSubmit([self]() { self.counter++; });
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[NSThread sleepForTimeInterval:0.01];
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}
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// Check that the counter has the expected value after giving the runnables time to run.
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XCTAssertLessThanOrEqual(abs(self.counter - kIncrements), 0);
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}
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// Tests that fails to submit when the executor is shut down.
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- (void)testFailtoSubmitAfterShutdown {
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std::unique_ptr<MultiThreadExecutor> executor([self executor]);
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executor->Shutdown();
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XCTAssertFalse(executor->DoSubmit([self]() { self.counter++; }));
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// Check that the counter has the expected value after giving the runnables time to run.
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[NSThread sleepForTimeInterval:0.01];
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XCTAssertEqual(self.counter, 0);
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}
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// Tests that when the executor is shut down, it waits for pending operations to finish, and no new
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// operations will be executed.
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- (void)testShutdownToAllowExistingTaskComplete {
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std::unique_ptr<MultiThreadExecutor> executor([self executor]);
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dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_TARGET_QUEUE_DEFAULT, 0);
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XCTestExpectation *expectation = [self expectationWithDescription:@"finished"];
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const int kRunnableCount = 1000;
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for (int i = 0; i < kRunnableCount; i++) {
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executor->Execute([self]() { self.counter++; });
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}
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executor->Shutdown();
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executor->Execute([self]() { self.otherCounter++; });
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), queue, ^{
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XCTAssertLessThanOrEqual(self.counter, kRunnableCount);
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XCTAssertEqual(self.otherCounter, 0);
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[expectation fulfill];
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});
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[self waitForExpectationsWithTimeout:0.5 handler:nil];
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}
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@end
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