How to use setPreferences method of junit.runner.BaseTestRunner class

Best junit code snippet using junit.runner.BaseTestRunner.setPreferences

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...14/* */ public BaseTestRunner()15/* */ {16/* 5 */ throw new RuntimeException("Stub!"); } 17/* 6 */ public synchronized void startTest(Test test) { throw new RuntimeException("Stub!"); } 18/* 7 */ protected static void setPreferences(Properties preferences) { throw new RuntimeException("Stub!"); } 19/* 8 */ protected static Properties getPreferences() { throw new RuntimeException("Stub!"); } 20/* 9 */ public static void savePreferences() throws IOException { throw new RuntimeException("Stub!"); } 21/* 10 */ public void setPreference(String key, String value) { throw new RuntimeException("Stub!"); } 22/* 11 */ public synchronized void endTest(Test test) { throw new RuntimeException("Stub!"); } 23/* 12 */ public synchronized void addError(Test test, Throwable t) { throw new RuntimeException("Stub!"); } 24/* 13 */ public synchronized void addFailure(Test test, AssertionFailedError t) { throw new RuntimeException("Stub!"); } 25/* */ public abstract void testStarted(String paramString);26/* */ 27/* */ public abstract void testEnded(String paramString);28/* */ 29/* */ public abstract void testFailed(int paramInt, Test paramTest, Throwable paramThrowable);30/* */ 31/* 17 */ public Test getTest(String suiteClassName) { throw new RuntimeException("Stub!"); } 32/* 18 */ public String elapsedTimeAsString(long runTime) { throw new RuntimeException("Stub!"); } ...

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setPreferences

Using AI Code Generation

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1import junit.runner.BaseTestRunner;2import junit.runner.Version;3BaseTestRunner.setPreferences(Version.id(), true, false, false, false, false);4import junit.textui.TestRunner;5import junit.framework.TestSuite;6import junit.framework.Test;7TestSuite suite = new TestSuite();8suite.addTest(new TestSuite(FirstTest.class));9TestRunner.run(suite);10import junit.textui.TestRunner;11import junit.framework.TestSuite;12import junit.framework.Test;13TestSuite suite = new TestSuite();14suite.addTest(new TestSuite(FirstTest.class));15TestRunner.run(suite);16import junit.textui.TestRunner;17import junit.framework.TestSuite;18import junit.framework.Test;19TestSuite suite = new TestSuite();20suite.addTest(new TestSuite(FirstTest.class));21TestRunner.run(suite);22import junit.textui.TestRunner;23import junit.framework.TestSuite;24import junit.framework.Test;25TestSuite suite = new TestSuite();26suite.addTest(new TestSuite(FirstTest.class));27TestRunner.run(suite);28import junit.textui.TestRunner;29import junit.framework.TestSuite;30import junit.framework.Test;31TestSuite suite = new TestSuite();32suite.addTest(new TestSuite(FirstTest.class));33TestRunner.run(suite);34import junit.textui.TestRunner;35import junit.framework.TestSuite;36import junit.framework.Test;37TestSuite suite = new TestSuite();38suite.addTest(new TestSuite(FirstTest.class));39TestRunner.run(suite);40import junit.textui.TestRunner;41import junit.framework.TestSuite;42import junit.framework.Test;43TestSuite suite = new TestSuite();44suite.addTest(new TestSuite(FirstTest.class));45TestRunner.run(suite);46import junit.textui.TestRunner;47import junit.framework.TestSuite;48import junit.framework.Test;49TestSuite suite = new TestSuite();50suite.addTest(new TestSuite(FirstTest.class));51TestRunner.run(suite);52import junit.textui.TestRunner;53import junit.framework.TestSuite;54import junit.framework.Test;55TestSuite suite = new TestSuite();56suite.addTest(new TestSuite(FirstTest.class));57TestRunner.run(suite);

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StackOverFlow community discussions

Questions
Discussion

Easy way to get a test file into JUnit

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Mock a constructor with parameter

You can try @Rule annotation. Here is the example from the docs:

public static class UsesExternalResource {
    Server myServer = new Server();

    @Rule public ExternalResource resource = new ExternalResource() {
        @Override
        protected void before() throws Throwable {
            myServer.connect();
        };

        @Override
        protected void after() {
            myServer.disconnect();
        };
    };

    @Test public void testFoo() {
        new Client().run(myServer);
    }
}

You just need to create FileResource class extending ExternalResource.

Full Example

import static org.junit.Assert.*;

import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExternalResource;

public class TestSomething
{
    @Rule
    public ResourceFile res = new ResourceFile("/res.txt");

    @Test
    public void test() throws Exception
    {
        assertTrue(res.getContent().length() > 0);
        assertTrue(res.getFile().exists());
    }
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;

import org.junit.rules.ExternalResource;

public class ResourceFile extends ExternalResource
{
    String res;
    File file = null;
    InputStream stream;

    public ResourceFile(String res)
    {
        this.res = res;
    }

    public File getFile() throws IOException
    {
        if (file == null)
        {
            createFile();
        }
        return file;
    }

    public InputStream getInputStream()
    {
        return stream;
    }

    public InputStream createInputStream()
    {
        return getClass().getResourceAsStream(res);
    }

    public String getContent() throws IOException
    {
        return getContent("utf-8");
    }

    public String getContent(String charSet) throws IOException
    {
        InputStreamReader reader = new InputStreamReader(createInputStream(),
            Charset.forName(charSet));
        char[] tmp = new char[4096];
        StringBuilder b = new StringBuilder();
        try
        {
            while (true)
            {
                int len = reader.read(tmp);
                if (len < 0)
                {
                    break;
                }
                b.append(tmp, 0, len);
            }
            reader.close();
        }
        finally
        {
            reader.close();
        }
        return b.toString();
    }

    @Override
    protected void before() throws Throwable
    {
        super.before();
        stream = getClass().getResourceAsStream(res);
    }

    @Override
    protected void after()
    {
        try
        {
            stream.close();
        }
        catch (IOException e)
        {
            // ignore
        }
        if (file != null)
        {
            file.delete();
        }
        super.after();
    }

    private void createFile() throws IOException
    {
        file = new File(".",res);
        InputStream stream = getClass().getResourceAsStream(res);
        try
        {
            file.createNewFile();
            FileOutputStream ostream = null;
            try
            {
                ostream = new FileOutputStream(file);
                byte[] buffer = new byte[4096];
                while (true)
                {
                    int len = stream.read(buffer);
                    if (len < 0)
                    {
                        break;
                    }
                    ostream.write(buffer, 0, len);
                }
            }
            finally
            {
                if (ostream != null)
                {
                    ostream.close();
                }
            }
        }
        finally
        {
            stream.close();
        }
    }

}

https://stackoverflow.com/questions/2597271/easy-way-to-get-a-test-file-into-junit

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