<!DOCTYPE html>
<html>
<head>
<script src="../../http/tests/inspector/resources/inspector-test.js"></script>
<script>
function test()
{
    let mainFrame = WI.frameResourceManager.mainFrame;
    let childFrames = mainFrame.childFrameCollection.toArray();
    InspectorTest.expectEqual(childFrames.length, 1, "Page should have a subframe.");

    let suite = InspectorTest.createAsyncSuite("CSSManager.preferredInspectorStyleSheetForFrame");

    suite.addTestCase({
        name: "CheckNoStyleSheets",
        description: "Ensure there are no stylesheets.",
        test(resolve, reject) {
            InspectorTest.expectThat(WI.cssStyleManager.styleSheets.length === 0, "Should be no stylesheets.");
            resolve();
        }
    });

    suite.addTestCase({
        name: "CreateMainFrameInspectorStyleSheet",
        description: "First request for main frame should create inspector stylesheet.",
        test(resolve, reject) {
            WI.cssStyleManager.singleFireEventListener(WI.CSSStyleManager.Event.StyleSheetAdded, (event) => {
                InspectorTest.expectThat(event.data.styleSheet.origin === WI.CSSStyleSheet.Type.Inspector, "Added StyleSheet origin should be 'inspector'.");
                InspectorTest.expectThat(event.data.styleSheet.isInspectorStyleSheet(), "StyleSheet.isInspectorStyleSheet() should be true.");
                InspectorTest.expectThat(event.data.styleSheet.parentFrame === mainFrame, "Added StyleSheet frame should be the main frame.");
            });

            WI.cssStyleManager.preferredInspectorStyleSheetForFrame(mainFrame, (styleSheet) => {
                InspectorTest.expectThat(WI.cssStyleManager.styleSheets.length === 1, "Should be one stylesheet.");
                InspectorTest.expectThat(styleSheet.origin === WI.CSSStyleSheet.Type.Inspector, "StyleSheet origin is inspector.");
                InspectorTest.expectThat(styleSheet.isInspectorStyleSheet(), "StyleSheet.isInspectorStyleSheet() should be true.");
                resolve();
            });
        }
    });

    suite.addTestCase({
        name: "AnotherMainFrameRequestDoesNothing",
        description: "Second request for main frame should not create a new stylesheet.",
        test(resolve, reject) {
            let listener = WI.cssStyleManager.singleFireEventListener(WI.CSSStyleManager.Event.StyleSheetAdded, (event) => {
                InspectorTest.assert(false, "Should not create a new StyleSheet, should reuse the existing one");
            });
            WI.cssStyleManager.preferredInspectorStyleSheetForFrame(mainFrame, (styleSheet) => {
                InspectorTest.expectThat(WI.cssStyleManager.styleSheets.length === 1, "Should still be one stylesheet.");
                InspectorTest.expectThat(styleSheet.origin === WI.CSSStyleSheet.Type.Inspector, "StyleSheet origin should be 'inspector'.");
                InspectorTest.expectThat(styleSheet.isInspectorStyleSheet(), "StyleSheet.isInspectorStyleSheet() should be true.");
                WI.cssStyleManager.removeEventListener(WI.CSSStyleManager.Event.StyleSheetAdded, listener, null);
                resolve();
            });
        }
    });

    suite.addTestCase({
        name: "CreateSubFrameInspectorStyleSheet",
        description: "First request for subframe should create inspector stylesheet.",
        test(resolve, reject) {
            WI.cssStyleManager.singleFireEventListener(WI.CSSStyleManager.Event.StyleSheetAdded, (event) => {
                InspectorTest.expectThat(event.data.styleSheet.origin === WI.CSSStyleSheet.Type.Inspector, "Added StyleSheet origin should be 'inspector'.");
                InspectorTest.expectThat(event.data.styleSheet.isInspectorStyleSheet(), "StyleSheet.isInspectorStyleSheet() should be true.");
                InspectorTest.expectThat(event.data.styleSheet.parentFrame === childFrames[0], "Added StyleSheet frame should be a child frame.");
            });

            WI.cssStyleManager.preferredInspectorStyleSheetForFrame(childFrames[0], (styleSheet) => {
                InspectorTest.expectThat(WI.cssStyleManager.styleSheets.length === 2, "Should be two stylesheets.");
                InspectorTest.expectThat(styleSheet.origin === WI.CSSStyleSheet.Type.Inspector, "StyleSheet origin should be 'inspector'.");
                InspectorTest.expectThat(styleSheet.isInspectorStyleSheet(), "StyleSheet.isInspectorStyleSheet() should be true.");
                resolve();
            });
        }
    });

    suite.addTestCase({
        name: "AnotherSubFrameRequestDoesNothing",
        description: "Second request for main frame should not create a new stylesheet.",
        test(resolve, reject) {
            let listener = WI.cssStyleManager.singleFireEventListener(WI.CSSStyleManager.Event.StyleSheetAdded, (event) => {
                InspectorTest.assert(false, "Should not create a new StyleSheet, should reuse the existing one");
            });
            WI.cssStyleManager.preferredInspectorStyleSheetForFrame(childFrames[0], (styleSheet) => {
                InspectorTest.expectThat(WI.cssStyleManager.styleSheets.length === 2, "Should be two stylesheets.");
                InspectorTest.expectThat(styleSheet.origin === WI.CSSStyleSheet.Type.Inspector, "StyleSheet origin should be 'inspector'.");
                InspectorTest.expectThat(styleSheet.isInspectorStyleSheet(), "StyleSheet.isInspectorStyleSheet() should be true.");
                WI.cssStyleManager.removeEventListener(WI.CSSStyleManager.Event.StyleSheetAdded, listener, null);
                resolve();
            });
        }
    });

    WI.cssStyleManager.singleFireEventListener(WI.CSSStyleManager.Event.StyleSheetRemoved, function(event) {
        InspectorTest.assert(false, "Should not be removing any StyleSheets in this test.");
    });

    suite.runTestCasesAndFinish();
}
</script>
</head>
<body onload="runTest()">
    <p>Test CSSManager.preferredInspectorStyleSheetForFrame.</p>
    <iframe src="about:blank"></iframe>
</body>
</html>