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It collects code instrumentation data from\n * pages and converts local filesystem paths into URLs for use with\n * `leadfoot/Session#get`.\n */\nexport default class ProxiedSession extends Session {\n /**\n * The base URL for relative URLs.\n */\n baseUrl = '';\n\n /**\n * The name of the global variable used to store coverage data.\n */\n coverageVariable = '';\n\n /**\n * The Executor hosting this session.\n */\n executor!: Node;\n\n private _heartbeatIntervalHandle: { remove: Function } | undefined;\n\n get coverageEnabled() {\n return this.executor.config.coverage !== false;\n }\n\n /**\n * Navigates the browser to a new URL like `leadfoot/Session#get`, but\n * retrieves any code coverage data recorded by the browser prior to\n * navigation.\n */\n get(url: string) {\n // At least two letters are required in the scheme to avoid Windows\n // paths being misinterpreted as URLs\n if (!/^[A-Za-z][A-Za-z0-9+.-]+:/.test(url)) {\n if (url.indexOf(this.executor.config.basePath) === 0) {\n url = url.slice(this.executor.config.basePath.length);\n }\n\n url = this.baseUrl + url;\n }\n\n if (!this.coverageEnabled) {\n return super.get(url);\n }\n\n return this._getCoverage().finally(() => {\n return super.get(url);\n });\n }\n\n /**\n * Quits the browser like `leadfoot/Session#quit`, but retrieves any code\n * coverage data recorded by the browser prior to quitting.\n */\n quit() {\n this.executor.log('Quitting', this.sessionId);\n return this.setHeartbeatInterval(0)\n .then(() => {\n if (this.coverageEnabled) {\n return this._getCoverage();\n }\n })\n .finally(() => super.quit());\n }\n\n /**\n * Sets up a timer to send no-op commands to the remote server on an\n * interval to prevent long-running unit tests from causing the session to\n * time out.\n *\n * @param delay Amount of time to wait between heartbeats. Setting the delay\n * to 0 will disable heartbeats.\n */\n setHeartbeatInterval(delay: number): CancellablePromise<void> {\n this._heartbeatIntervalHandle && this._heartbeatIntervalHandle.remove();\n\n if (delay) {\n // A heartbeat command is sent immediately when the interval is set\n // because it is unknown how long ago the last command was sent and\n // it simplifies the implementation by requiring only one call to\n // `setTimeout`\n const sendHeartbeat = () => {\n let timeoutId: NodeJS.Timer;\n let cancelled = false;\n let startTime = Date.now();\n\n this._heartbeatIntervalHandle = {\n remove: function() {\n cancelled = true;\n clearTimeout(timeoutId);\n }\n };\n\n this.getCurrentUrl()\n .then(() => {\n if (!cancelled) {\n timeoutId = global.setTimeout(\n sendHeartbeat,\n delay - (Date.now() - startTime)\n );\n }\n })\n .catch(error => this.executor.emit('error', error));\n };\n\n sendHeartbeat();\n }\n\n return Task.resolve();\n }\n\n protected _getCoverage() {\n let shouldGetPromise: CancellablePromise<boolean>;\n\n // At least Safari 9 will not inject user scripts for non http/https\n // URLs, so we can't get coverage data.\n if (this.capabilities.brokenExecuteForNonHttpUrl) {\n shouldGetPromise = Task.resolve(\n this.getCurrentUrl().then(url => /^https?:/i.test(url))\n );\n } else {\n shouldGetPromise = Task.resolve(true);\n }\n\n return shouldGetPromise.then(shouldGetCoverage => {\n if (shouldGetCoverage) {\n return this.execute<string>(getCoverageData, [\n this.coverageVariable\n ]).then(coverageData => {\n // Emit coverage retrieved from a remote session\n this.executor.log('Got coverage data for', this.sessionId);\n if (coverageData) {\n return this.executor.emit('coverage', {\n sessionId: this.sessionId,\n source: 'remote session',\n coverage: JSON.parse(coverageData)\n });\n }\n });\n }\n });\n }\n}\n"]} |