MyFormatterTest.java

package cm.android.util;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricGradleTestRunner;
import org.robolectric.annotation.Config;

import static junit.framework.TestCase.assertEquals;
import static org.junit.Assert.assertNotEquals;

@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = BuildConfig.class, sdk = 22)
public class MyFormatterTest {

    @Test
    public void testFormatFileSize() throws Exception {
        String temp = MyFormatter.formatFileSize(1024);
        assertEquals(temp, "1.00KB");
    }

    @Test
    public void testFormatDate() throws Exception {
        String temp = MyFormatter.formatDate(1439520017722l);
        assertEquals(temp, "2015-08-14 10:40:17");

        String temp2 = MyFormatter.formatDate2(1439520017722l);
        assertEquals(temp2, "20150814104017");

        String temp3 = MyFormatter.formatDate("yyyy-MM-dd HH:mm:ss.SSS", 1439520017722l);
        assertNotEquals(temp3, "2015-08-14 10:40:17");
    }
}