| <!DOCTYPE html> |
| |
| <head> |
| <title>JavaScript Profiler Test</title> |
| <script async src="black_box_js_test_utils.js"></script> |
| <script> |
| |
| const testPrimeProfiler = async () => { |
| const profiler = new Profiler({ sampleInterval: 10 /**ms**/, maxBufferSize: 10 /**number of samples*/ }); |
| |
| // sleep 10 seconds |
| await new Promise(resolve => setTimeout(resolve, 10000 /**ms**/)); |
| |
| // stop & check |
| const trace = await profiler.stop(); |
| assertTrue(trace.samples.length > 0, "expected some stack traces"); |
| }; |
| |
| const testSampleBufferFullProfiler = async () => { |
| const promise = new Promise((resolve, reject) => { |
| const profiler = new Profiler({ maxBufferSize: 1, sampleInterval: 10 }); |
| profiler.addEventListener("samplebufferfull", () => { |
| profiler.stop().then(() => { resolve(true); }); |
| }); |
| }); |
| const timeoutPromise = new Promise((resolve) => { |
| setTimeout(() => { |
| resolve(false); |
| }, 60000); |
| }); |
| |
| const result = await Promise.race([timeoutPromise, promise]); |
| assertTrue(result, "expected sample buffer to be full"); |
| }; |
| |
| /** |
| * Creates a new Profiler and then deletes it before the sample buffer is full. |
| * Expects the SampleBuffer to be full and the callback to be executed. |
| */ |
| const testAbruptGarbageCollection = async () => { |
| const profilerPromise = new Promise((resolve) => { |
| window.profiler = new Profiler({ maxBufferSize: 100, sampleInterval: 10 }); |
| delete window.profiler; // simulates the effects of GC. |
| resolve(true); |
| }); |
| |
| const survivePromise = new Promise((resolve) => { |
| setTimeout(() => { |
| resolve(true); |
| }, 10000); |
| }); |
| |
| // must survive for 10 seconds |
| const result = await Promise.all([survivePromise, profilerPromise]); |
| assertTrue(result.every(p => p), "expected cobalt to survive 10 sec if GC collects profiler"); |
| }; |
| |
| window.addEventListener("load", async () => { |
| setupFinished(); |
| // Test Case 1: Prime Profiler |
| if (window.location.search.includes("mode=testPrimeProfiler")) { |
| console.log("testPrimeProfiler"); |
| await testPrimeProfiler(); |
| } |
| // Test Case 2: SampleBufferFull Profiler |
| else if (window.location.search.includes("mode=testSampleBufferFullProfiler")) { |
| console.log("testSampleBufferFullProfiler"); |
| await testSampleBufferFullProfiler(); |
| } |
| // Test Case 3: GC Profiler |
| else if (window.location.search.includes("mode=testAbruptGarbageCollection")) { |
| console.log("testAbruptGarbageCollection"); |
| await testAbruptGarbageCollection(); |
| } |
| else { |
| console.log("Running all tests"); |
| await testPrimeProfiler(); |
| await testSampleBufferFullProfiler(); |
| await testAbruptGarbageCollection(); |
| } |
| console.log("DONE"); |
| onEndTest(); |
| }); |
| </script> |
| </head> |
| |
| <body> |
| </body> |
