org.openqa.selenium.javascript.ClosureTestStatement.java Source code

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Here is the source code for org.openqa.selenium.javascript.ClosureTestStatement.java

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// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.openqa.selenium.javascript;

import static org.junit.Assert.fail;

import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebDriverException;

import com.google.common.base.Function;
import com.google.common.base.Stopwatch;
import com.google.common.base.Supplier;
import org.junit.runners.model.Statement;

import java.net.URL;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;

public class ClosureTestStatement extends Statement {

    private static final Logger LOG = Logger.getLogger(ClosureTestStatement.class.getName());

    private final Supplier<WebDriver> driverSupplier;
    private final String testPath;
    private final Function<String, URL> filePathToUrlFn;
    private final long timeoutSeconds;

    public ClosureTestStatement(Supplier<WebDriver> driverSupplier, String testPath,
            Function<String, URL> filePathToUrlFn, long timeoutSeconds) {
        this.driverSupplier = driverSupplier;
        this.testPath = testPath;
        this.filePathToUrlFn = filePathToUrlFn;
        this.timeoutSeconds = Math.max(0, timeoutSeconds);
    }

    @Override
    public void evaluate() throws Throwable {
        URL testUrl = filePathToUrlFn.apply(testPath);
        LOG.info("Running: " + testUrl);

        Stopwatch stopwatch = Stopwatch.createStarted();

        WebDriver driver = driverSupplier.get();

        // Attempt to make the window as big as possible.
        try {
            driver.manage().window().maximize();
        } catch (RuntimeException ignored) {
            // We tried.
        }

        JavascriptExecutor executor = (JavascriptExecutor) driver;
        // Avoid Safari JS leak between tests.
        executor.executeScript("if (window && window.top) window.top.G_testRunner = null");

        try {
            driver.get(testUrl.toString());
        } catch (WebDriverException e) {
            fail("Test failed to load: " + e.getMessage());
        }

        while (!getBoolean(executor, Query.IS_FINISHED)) {
            long elapsedTime = stopwatch.elapsed(TimeUnit.SECONDS);
            if (timeoutSeconds > 0 && elapsedTime > timeoutSeconds) {
                throw new JavaScriptAssertionError("Tests timed out after " + elapsedTime + " s");
            }
            TimeUnit.MILLISECONDS.sleep(100);
        }

        if (!getBoolean(executor, Query.IS_SUCCESS)) {
            String report = getString(executor, Query.GET_REPORT);
            throw new JavaScriptAssertionError(report);
        }
    }

    private boolean getBoolean(JavascriptExecutor executor, Query query) {
        return (Boolean) executor.executeScript(query.script);
    }

    private String getString(JavascriptExecutor executor, Query query) {
        return (String) executor.executeScript(query.script);
    }

    private static enum Query {
        IS_FINISHED("return !!tr && tr.isFinished();"), IS_SUCCESS("return !!tr && tr.isSuccess();"), GET_REPORT(
                "return tr.getReport(true);");

        private final String script;

        private Query(String script) {
            this.script = "var tr = window.top.G_testRunner;" + script;
        }
    }
}