Move GardeningServer out of BuildSlaveSupport

Tools/BuildSlaveSupport/build.webkit.org-config/public_html/TestFailures/scripts/FlakyLayoutTestDetector.js

-/*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-function FlakyLayoutTestDetector() {
-    this._tests = {};
-    this._buildCount = 0;
-}
-
-FlakyLayoutTestDetector.prototype = {
-    incorporateTestResults: function(buildName, failingTests, tooManyFailures) {
-        var newFlakyTests = [];
-
-        if (tooManyFailures) {
-            // Something was going horribly wrong during this test run. We shouldn't assume that any
-            // passes/failures are due to flakiness.
-            return newFlakyTests;
-        }
-
-        ++this._buildCount;
-
-        // Record failing tests.
-        for (var testName in failingTests) {
-            if (!(testName in this._tests)) {
-               if (this._buildCount > this._maximumFailOrPassCount) {
-                   // This test hasn't failed in the _maximumFailOrPassCount most recent builds, so
-                   // don't consider it to be flaky. In fact, we don't have to track it at all!
-                   continue;
-               }
-
-                this._tests[testName] = {
-                    state: this._states.LastSeenFailing,
-                    count: 0,
-                    history: [],
-                };
-            }
-
-            var testData = this._tests[testName];
-            testData.history.push({ build: buildName, result: failingTests[testName] });
-
-            if (testData.state === this._states.LastSeenFailing) {
-                ++testData.count;
-                if (testData.count > this._maximumFailOrPassCount)
-                    testData.state = this._states.NotFlaky;
-            } else if (testData.state === this._states.LastSeenPassing) {
-                testData.state = this._states.PossiblyFlaky;
-                newFlakyTests.push(testName);
-            }
-        }
-
-        // Record passing tests.
-        for (var testName in this._tests) {
-            if (testName in failingTests)
-                continue;
-
-            var testData = this._tests[testName];
-            testData.history.push({ build: buildName, result: { failureType: 'pass' } });
-
-            if (testData.state === this._states.LastSeenPassing) {
-                ++testData.count;
-                if (testData.count > this._maximumFailOrPassCount)
-                    testData.state = this._states.NotFlaky;
-            } else if (testData.state === this._states.LastSeenFailing) {
-                testData.state = this._states.LastSeenPassing;
-                testData.count = 1;
-            }
-        }
-
-        return newFlakyTests;
-    },
-
-    allFailures: function(testName) {
-        if (!(testName in this._tests))
-            return null;
-
-        return this._tests[testName].history.filter(function(historyItem) { return historyItem.result.failureType !== 'pass' });
-    },
-
-    get possiblyFlakyTests() {
-        var self = this;
-        return Object.keys(self._tests).filter(function(testName) { return self._tests[testName].state === self._states.PossiblyFlaky });
-    },
-
-    // If a test has recently failed or passed more than this number of times in a row we don't
-    // consider it to be flaky.
-    _maximumFailOrPassCount: 9,
-
-    _states: {
-        LastSeenFailing: 0,
-        LastSeenPassing: 1,
-        PossiblyFlaky: 2,
-        NotFlaky: 3,
-    },
-};