MainTest.java

package com.cadrlife.devsearch.agent;


import org.junit.Test;

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

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class MainTest {

    @Test
    public void noArgUsage() throws Exception {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        int retVal = Main.exec(System.in, new PrintStream(outputStream), System.err, new String[]{});
        String output = outputStream.toString();
//        System.out.println(output);
        assertTrue(output, output.contains("Usage"));
        assertTrue(output, output.contains("update-index"));
        assertTrue(output, output.contains("checkout"));
        assertTrue(output, output.contains("update-contents"));
        assertEquals(1, retVal);
    }

    @Test
    public void unknownActionUsage() throws Exception {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        int retVal = Main.exec(System.in, new PrintStream(outputStream), System.err, new String[]{"other-action"});
        String output = outputStream.toString();
//        System.out.println(output);
        assertTrue(output, output.contains("Usage"));
        assertTrue(output, output.contains("update-index"));
        assertTrue(output, output.contains("checkout"));
        assertTrue(output, output.contains("update-contents"));
        assertEquals(1, retVal);
    }

    @Test
    public void updateIndexNoOptionsUsage() throws Exception {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        int retVal = Main.exec(System.in, new PrintStream(outputStream), System.err, new String[]{"update-index"});
        String output = outputStream.toString();

        assertTrue(output, output.contains("Usage"));
        assertTrue(output, output.contains("Missing required option"));
        assertEquals(1, retVal);
    }
}