CppcheckResultTest.java

/*******************************************************************************
 * Copyright (c) 2009 Thales Corporate Services SAS                             *
 * Author : Gregory Boissinot                                                   *
 *                                                                              *
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 * of this software and associated documentation files (the "Software"), to deal*
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 * furnished to do so, subject to the following conditions:                     *
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 * all copies or substantial portions of the Software.                          *
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,     *
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 * THE SOFTWARE.                                                                *
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package com.thalesgroup.hudson.plugins.cppcheck;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import hudson.model.AbstractBuild;
import hudson.model.BuildListener;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;

import junit.framework.Assert;

import org.junit.Before;
import org.junit.Test;

import com.thalesgroup.hudson.plugins.cppcheck.config.CppcheckConfig;


public class CppcheckResultTest {

    private BuildListener listener;
    private AbstractBuild owner;
    private CppcheckReport report;

    @Before
    public void setUp() throws Exception {

        //initialize the logger
        listener = mock(BuildListener.class);
        when(listener.getLogger()).thenReturn(new PrintStream(new ByteArrayOutputStream()));

        owner = mock(AbstractBuild.class);
        report = mock(CppcheckReport.class);

    }


    private int getNewError(boolean hasPreviousResult, int nbPreviousReportError, int nbReportError) {

        if (hasPreviousResult) {
            //Previous Report
            CppcheckReport previousReport = mock(CppcheckReport.class);
            when(previousReport.getNumberTotal()).thenReturn(nbPreviousReportError);

            // Previous Result and associate previous report
            CppcheckResult previousCppcheckResult = mock(CppcheckResult.class);
            when(previousCppcheckResult.getReport()).thenReturn(previousReport);

            //Previous build and bind with the current build
            AbstractBuild previousBuild = mock(AbstractBuild.class);
            CppcheckBuildAction buildAction = new CppcheckBuildAction(previousBuild, previousCppcheckResult, mock(CppcheckConfig.class));
            when(previousBuild.getAction(CppcheckBuildAction.class)).thenReturn(buildAction);
            when(owner.getPreviousBuild()).thenReturn(previousBuild);
        } else {
            when(owner.getPreviousBuild()).thenReturn(null);
        }

        //New report
        when(report.getNumberTotal()).thenReturn(nbReportError);

        CppcheckResult cppcheckResult = new CppcheckResult(report, null, owner);
        return cppcheckResult.getNumberNewErrorsFromPreviousBuild();
    }

    @Test
    public void testNumberNewErrorsFromPreviousBuildFirstBuild1() {
        Assert.assertEquals("With a first build, the number of new errors must be 0.", 0, getNewError(false, 0, 0));
    }

    @Test
    public void testNumberNewErrorsFromPreviousBuildFirstBuild2() {
        Assert.assertEquals("With a first build, the number of new errors must be 0.", 0, getNewError(false, 0, 1));
    }

    @Test
    public void testNumberNewErrorsFromPreviousBuildFirstBuild3() {
        Assert.assertEquals("With a first build, the number of new errors must be 0.", 0, getNewError(false, 0, 3));
    }


    private void processSecondBuild(int previousErrors, int atualErrors, int expectedNewErrors) {
        String message = String.format("With a second build, the number of new errors have to be %d with %d errors for the previous build and %d errors for the current build.", expectedNewErrors, previousErrors, atualErrors);
        Assert.assertEquals(message, expectedNewErrors, getNewError(true, previousErrors, atualErrors));
    }

    @Test
    public void testNumberNewErrorsFromPreviousBuildSecondBuild1() {

        processSecondBuild(0, 0, 0);
        processSecondBuild(0, 1, 1);
        processSecondBuild(0, 2, 2);
        processSecondBuild(0, 3, 3);

        processSecondBuild(1, 0, 0);
        processSecondBuild(1, 1, 0);
        processSecondBuild(1, 2, 1);
        processSecondBuild(1, 3, 2);

        processSecondBuild(2, 0, 0);
        processSecondBuild(2, 1, 0);
        processSecondBuild(2, 2, 0);
        processSecondBuild(2, 3, 1);

        processSecondBuild(3, 0, 0);
        processSecondBuild(3, 1, 0);
        processSecondBuild(3, 2, 0);
        processSecondBuild(3, 3, 0);
    }

}