Error in junit while mocking

Question

I am new to Junit,Below is the junit code which i am running.

package com.de.base.util.general;
import static org.junit.Assert.*;
import static org.mockito.M         


        

Answer 1

Here is my working code:

import static org.junit.Assert.assertEquals;

import java.util.HashMap;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mockito;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
@PrepareForTest(CollectionUtil.class)
public class TestHarnesTest {
    @InjectMocks
    TestHarnes w_res = new TestHarnes();

    @Before
    public void before() {
        PowerMockito.mockStatic(CollectionUtil.class);
    }

    @Test
    public void test_removeHashedSettings() throws Exception {
        HashMap w_abc = new HashMap();
        w_abc.put("abc", "89");
        // CollectionUtil mock = org.mockito.Mockito.mock(CollectionUtil.class);
        // PowerMockito.mockStatic(CollectionUtil.class,w_abc);
        PowerMockito.when(CollectionUtil.createHashMap(Mockito.eq("abc:89"), Mockito.eq(":"))).thenReturn(w_abc);
        assertEquals("abc:89:", TestHarnes.removeHashedSettings("1", "abc:89", ":"));
    }
}

and the TestHarnes class

public class TestHarnes {

    public static String removeHashedSettings(final String key, final String a_settings, final String deilimiter) throws Exception {
        if (!(key != null && key.trim().length() > 0)) {
            return a_settings;
        }
        if (!(a_settings != null && a_settings.trim().length() > 0)) {
            return a_settings;
        }

        HashMap hSettings = CollectionUtil.createHashMap(a_settings, deilimiter);
        hSettings.remove(key);
        return getSettingFromHash(hSettings, deilimiter);
    }

    private static String getSettingFromHash(final HashMap hSettings, final String deilimiter) {
        return "";
    }

}