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This plug-in provides test utilities for the static code analysis plug-ins.
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package hudson.plugins.analysis.test;

import static junit.framework.Assert.*;
import static org.mockito.Mockito.*;
import hudson.model.AbstractBuild;
import hudson.plugins.analysis.Messages;
import hudson.plugins.analysis.core.BuildHistory;
import hudson.plugins.analysis.core.BuildResult;
import hudson.plugins.analysis.core.ParserResult;
import hudson.plugins.analysis.util.model.DefaultAnnotationContainer;
import hudson.plugins.analysis.util.model.FileAnnotation;
import hudson.plugins.analysis.util.model.Priority;

import java.util.Calendar;
import java.util.GregorianCalendar;

import org.apache.commons.lang.SystemUtils;
import org.apache.commons.lang.time.DateUtils;
import org.junit.Test;

/**
 * Tests the class {@link BuildResultTest}.
 *
 * @param 
 *            type of the result to test
 */
public abstract class BuildResultTest extends AbstractEnglishLocaleTest {
    /** Error message. */
    private static final String WRONG_MESSAGE = "Wrong message";
    /** Error message. */
    private static final String WRONG_NEW_HIGHSCORE_INDICATOR = "Wrong new highscore indicator.";
    /** Two days in msec. */
    private static final long TWO_DAYS_IN_MS = 2 * DateUtils.MILLIS_PER_DAY;
    /** Error message. */
    private static final String WRONG_ZERO_WARNINGS_HIGH_SCORE = "Wrong zero warnings high score.";
    /** Error message. */
    private static final String WRONG_ZERO_WARNINGS_SINCE_DATE_COUNTER = "Wrong zero warnings since date counter.";
    /** Error message. */
    private static final String WRONG_ZERO_WARNINGS_SINCE_BUILD_COUNTER = "Wrong zero warnings since build counter.";
    /** Error message. */
    private static final String WRONG_NUMBER_OF_ANNOTATIONS = "Wrong number of annotations.";
    /** Filename of the annotation. */
    private static final String FILENAME = "filename";

    /**
     * Verifies that the zero warnings since build counter is correctly
     * initialized in the beginning.
     */
    @Test
    public void checkZeroWarningsCounterInitializationStartUnstable() {
        GregorianCalendar calendar = new GregorianCalendar(2008, 8, 8, 12, 30);

        T result = createBuildResult(createBuild(0, calendar), createProjectWithWarning(), createNullHistory());
        verifyResult(1, 0, 0, 0, false, 0, result);

        calendar.add(Calendar.DAY_OF_YEAR, 2);
        long timeOfFirstZeroWarningsBuild = calendar.getTime().getTime();

        result = createBuildResult(createBuild(1, calendar), new ParserResult(), result);
        verifyResult(0, 1, timeOfFirstZeroWarningsBuild, 0, true, 0, result);

        calendar.add(Calendar.DAY_OF_YEAR, 2);
        result = createBuildResult(createBuild(0, calendar), new ParserResult(), result);
        verifyResult(0, 1, timeOfFirstZeroWarningsBuild, TWO_DAYS_IN_MS, true, 0, result);

        result.getDataFile().delete();
    }

    /**
     * Verifies that the zero warnings since build counter is correctly
     * propagated from build to build.
     */
    @Test
    public void checkThatZeroWarningsIsUpdated() {
        GregorianCalendar calendar = new GregorianCalendar(2008, 8, 8, 12, 30);
        long timeOfFirstZeroWarningsBuild = calendar.getTime().getTime();

        T result; // the result is replaced by each new result

        // No change of defaults at the beginning
        result = createBuildResult(createBuild(0, calendar), new ParserResult(), createNullHistory());
        verifyResult(0, 0, timeOfFirstZeroWarningsBuild, 0, true, 0, result);

        // Compare with a result that has warnings
        result = createDefaultResultWithNoWarnings(1, calendar, createResultWithWarnings());
        verifyResult(0, 1, timeOfFirstZeroWarningsBuild, 0, true, 0, result);

        // Again a result without warnings, two days after the first build
        calendar.add(Calendar.DAY_OF_YEAR, 2);
        result = createDefaultResultWithNoWarnings(2, calendar, result);
        verifyResult(0, 1, timeOfFirstZeroWarningsBuild, TWO_DAYS_IN_MS, true, 0, result);

        // Now the results contains warnings again, resetting everything besides the high score
        result = createBuildResult(createBuild(3, calendar), createProjectWithWarning(), result);
        verifyResult(1, 0, 0, TWO_DAYS_IN_MS, false, TWO_DAYS_IN_MS, result);

        // Now a result without warnings, one day after the previous build, e.g., no high score
        calendar.add(Calendar.DAY_OF_YEAR, 1);
        timeOfFirstZeroWarningsBuild = calendar.getTime().getTime();
        result = createDefaultResultWithNoWarnings(3, calendar, result);
        verifyResult(0, 3, timeOfFirstZeroWarningsBuild, TWO_DAYS_IN_MS, false, TWO_DAYS_IN_MS, result);

        // Again a result without warnings, one day after the previous build, e.g., still no high score
        calendar.add(Calendar.DAY_OF_YEAR, 1);
        result = createDefaultResultWithNoWarnings(4, calendar, result);
        verifyResult(0, 3, timeOfFirstZeroWarningsBuild, TWO_DAYS_IN_MS, false, TWO_DAYS_IN_MS - TWO_DAYS_IN_MS / 2, result);

        // Again a result without warnings, one day after the previous build, e.g., still no high score
        calendar.add(Calendar.DAY_OF_YEAR, 1);
        result = createDefaultResultWithNoWarnings(5, calendar, result);
        verifyResult(0, 3, timeOfFirstZeroWarningsBuild, TWO_DAYS_IN_MS, false, 0, result);

        // Finally, a result without warnings, three more days after the previous build, e.g., a high score of 4 days
        calendar.add(Calendar.DAY_OF_YEAR, 2);
        result = createDefaultResultWithNoWarnings(4, calendar, result);
        verifyResult(0, 3, timeOfFirstZeroWarningsBuild, 2 * TWO_DAYS_IN_MS, true, 0, result);

        result.getDataFile().delete();
    }

    /**
     * Creates a history that has no previous and reference builds.
     *
     * @return a null history object
     */
    private BuildHistory createNullHistory() {
        BuildHistory history = mock(BuildHistory.class);

        when(history.getReferenceAnnotations()).thenReturn(new DefaultAnnotationContainer());

        return history;
    }

    /**
     * Verifies that the zero warnings since build counter is correctly
     * initialized in the beginning.
     */
    @Test
    public void checkZeroWarningsCounterInitialization() {
        GregorianCalendar calendar = new GregorianCalendar(2008, 8, 8, 12, 30);
        long timeOfFirstZeroWarningsBuild = calendar.getTime().getTime();

        T result = createBuildResult(createBuild(0, calendar), new ParserResult(), createNullHistory());
        verifyResult(0, 0, timeOfFirstZeroWarningsBuild, 0, true, 0, result);

        calendar.add(Calendar.DAY_OF_YEAR, 2);
        result = createBuildResult(createBuild(0, calendar), new ParserResult(), result);
        verifyResult(0, 0, timeOfFirstZeroWarningsBuild, TWO_DAYS_IN_MS, true, 0, result);

        result.getDataFile().delete();
    }

    /**
     * Creates a new result that has no warnings.
     *
     * @param buildNumner
     *            build ID
     * @param calendar
     *            current calendar
     * @param previousResult
     *            previous result
     * @return the new result
     */
    private T createDefaultResultWithNoWarnings(final int buildNumner, final GregorianCalendar calendar, final T previousResult) {
        return createBuildResult(createBuild(buildNumner, calendar), new ParserResult(), previousResult);
    }

    /**
     * Returns a result with some warnings.
     *
     * @return a result with some warnings
     */
    private T createResultWithWarnings() {
        ParserResult projectWithWarning = createProjectWithWarning();
        return createBuildResult(createBuild(42, new GregorianCalendar(2008, 1, 1, 12, 00)), projectWithWarning, createNullHistory());
    }

    /**
     * Verifies the build result.
     *
     * @param expectedAnnotationCount
     *            expected number of annotations
     * @param expectedZeroWarningsBuildNumber
     *            expected build number of last zero warnings build
     * @param expectedZeroWarningsBuildDate
     *            expected build date of last zero warnings build
     * @param expectedHighScore
     *            expected highscore time
     * @param expectedIsNewHighScore
     *            expected value of is highscore flag
     * @param gap
     *            gap of msec to reach highscore
     * @param result
     *            the actual result to verify
     */
    private void verifyResult(final int expectedAnnotationCount, final int expectedZeroWarningsBuildNumber,
            final long expectedZeroWarningsBuildDate, final long expectedHighScore, final boolean expectedIsNewHighScore, final long gap, final T result) {
        assertEquals(WRONG_NUMBER_OF_ANNOTATIONS, expectedAnnotationCount, result.getNumberOfAnnotations());
        assertEquals(WRONG_ZERO_WARNINGS_SINCE_BUILD_COUNTER, expectedZeroWarningsBuildNumber, result.getZeroWarningsSinceBuild());
        assertEquals(WRONG_ZERO_WARNINGS_SINCE_DATE_COUNTER, expectedZeroWarningsBuildDate, result.getZeroWarningsSinceDate());
        assertEquals(WRONG_ZERO_WARNINGS_HIGH_SCORE, expectedHighScore, result.getZeroWarningsHighScore());
        assertEquals(WRONG_NEW_HIGHSCORE_INDICATOR, expectedIsNewHighScore, result.isNewZeroWarningsHighScore());

        verifyHighScoreMessage(expectedZeroWarningsBuildNumber, expectedIsNewHighScore, expectedHighScore, gap, result);
    }

    /**
     * Verifies the highscore message.
     *
     * @param expectedZeroWarningsBuildNumber
     *            expected build number of last zero warnings build
     * @param expectedIsNewHighScore
     *            expected value of is highscore flag
     * @param expectedHighScore
     *            expected highscore time
     * @param gap
     *            gap of msec to reach highscore
     * @param result
     *            the actual result to verify
     */
    protected void verifyHighScoreMessage(final int expectedZeroWarningsBuildNumber, final boolean expectedIsNewHighScore, final long expectedHighScore, final long gap, final T result) {
        if (result.hasNoAnnotations() && result.getDelta() == 0) {
            assertTrue(WRONG_MESSAGE, result.getDetails().contains(Messages.ResultAction_NoWarningsSince(expectedZeroWarningsBuildNumber)));
            if (expectedIsNewHighScore) {
                long days = BuildResult.getDays(expectedHighScore);
                if (days == 1) {
                    assertTrue(WRONG_MESSAGE, result.getDetails().contains(Messages.ResultAction_OneHighScore()));
                }
                else {
                    assertTrue(WRONG_MESSAGE, result.getDetails().contains(Messages.ResultAction_MultipleHighScore(days)));
                }
            }
            else {
                long days = BuildResult.getDays(gap);
                if (days == 1) {
                    assertTrue(WRONG_MESSAGE, result.getDetails().contains(Messages.ResultAction_OneNoHighScore()));
                }
                else {
                    assertTrue(WRONG_MESSAGE, result.getDetails().contains(Messages.ResultAction_MultipleNoHighScore(days)));
                }
            }
        }
    }

    /**
     * Creates a project that contains a single annotation.
     *
     * @return the created project
     */
    private ParserResult createProjectWithWarning() {
        ParserResult project = new ParserResult();

        FileAnnotation annotation = mock(FileAnnotation.class);
        when(annotation.getPriority()).thenReturn(Priority.HIGH);
        when(annotation.getFileName()).thenReturn(FILENAME);
        when(annotation.getModuleName()).thenReturn("Module");
        when(annotation.getPackageName()).thenReturn("Package");
        project.addAnnotation(annotation);

        return project;
    }

    /**
     * Creates a mock for the build.
     *
     * @param buildNumber
     *            the current build number
     * @param calendar
     *            calendar representing the time of the build
     * @return a mock for the build
     */
    private AbstractBuild createBuild(final int buildNumber, final Calendar calendar) {
        AbstractBuild build = mock(AbstractBuild.class);

        when(build.getTimestamp()).thenReturn(calendar);
        when(build.getRootDir()).thenReturn(SystemUtils.getJavaIoTmpDir());
        when(build.getNumber()).thenReturn(buildNumber);

        return build;
    }

    /**
     * Creates the build result under test.
     *
     * @param build
     *            the current build
     * @param project
     *            the project of the current build
     * @param history
     *            the history of build results of the associated plug-in
     * @return the build result under test
     */
    protected abstract T createBuildResult(AbstractBuild build, ParserResult project, BuildHistory history);

    /**
     * Creates the build result under test.
     *
     * @param build
     *            the current build
     * @param project
     *            the project of the current build
     * @param previousResult
     *            the result of the previous build
     * @return the build result under test
     */
    private T createBuildResult(final AbstractBuild build, final ParserResult project, final T previousResult) {
        BuildHistory history = mock(BuildHistory.class);
        DefaultAnnotationContainer value = new DefaultAnnotationContainer(project.getAnnotations());
        when(history.getReferenceAnnotations()).thenReturn(value);
        when(history.hasPreviousResult()).thenReturn(true);
        when(history.getPreviousResult()).thenReturn(previousResult);

        return createBuildResult(build, project, history);
    }
}