tasks/app/src/androidTestGoogleplay/java/com/todoroo/astrid/gtasks/api/GtasksApiUtilitiesTest.java

package com.todoroo.astrid.gtasks.api;

import android.support.test.runner.AndroidJUnit4;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.tasks.time.DateTime;

import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

import static com.todoroo.astrid.gtasks.api.GtasksApiUtilities.gtasksCompletedTimeToUnixTime;
import static com.todoroo.astrid.gtasks.api.GtasksApiUtilities.gtasksDueTimeToUnixTime;
import static com.todoroo.astrid.gtasks.api.GtasksApiUtilities.unixTimeToGtasksCompletionTime;
import static com.todoroo.astrid.gtasks.api.GtasksApiUtilities.unixTimeToGtasksDueDate;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNull;

@RunWith(AndroidJUnit4.class)
public class GtasksApiUtilitiesTest {

    private static final Locale defaultLocale = Locale.getDefault();
    private static final TimeZone defaultDateTimeZone = TimeZone.getDefault();

    @Before
    public void setUp() {
        Locale.setDefault(Locale.US);
        TimeZone.setDefault(TimeZone.getTimeZone("America/Chicago"));
    }

    @After
    public void tearDown() {
        Locale.setDefault(defaultLocale);
        TimeZone.setDefault(defaultDateTimeZone);
    }

    @Test
    public void testConvertUnixToGoogleCompletionTime() {
        long now = new DateTime(2014, 1, 8, 8, 53, 20, 109).getMillis();
        assertEquals(now, unixTimeToGtasksCompletionTime(now).getValue());
    }

    @Test
    public void testConvertGoogleCompletedTimeToUnixTime() {
        long now = new DateTime(2014, 1, 8, 8, 53, 20, 109).getMillis();
        com.google.api.client.util.DateTime gtime = new com.google.api.client.util.DateTime(now);
        assertEquals(now, gtasksCompletedTimeToUnixTime(gtime));
    }

    @Test
    public void testConvertDueDateTimeToGoogleDueDate() {
        DateTime now = new DateTime(2014, 1, 8, 8, 53, 20, 109);

        assertEquals(
                new DateTime(2014, 1, 8, 0, 0, 0, 0, TimeZone.getTimeZone("GMT")).getMillis(),
                unixTimeToGtasksDueDate(now.getMillis()).getValue());
    }

    @Test
    public void testConvertGoogleDueDateToUnixTime() {
        com.google.api.client.util.DateTime googleDueDate =
                new com.google.api.client.util.DateTime(
                        new Date(new DateTime(2014, 1, 8, 0, 0, 0, 0).getMillis()), TimeZone.getTimeZone("GMT"));

        assertEquals(
                new DateTime(2014, 1, 8, 6, 0, 0, 0).getMillis(),
                gtasksDueTimeToUnixTime(googleDueDate));
    }

    @Test
    public void testConvertToInvalidGtaskTimes() {
        assertNull(unixTimeToGtasksCompletionTime(-1));
        assertNull(unixTimeToGtasksDueDate(-1));
    }

    @Test
    public void testConvertFromInvalidGtaskTimes() {
        assertEquals(0, gtasksCompletedTimeToUnixTime(null));
        assertEquals(0, gtasksDueTimeToUnixTime(null));
    }
}