android/sdl_android/src/androidTest/java/com/smartdevicelink/test/rpc/enums/DistanceUnitTests.java


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package com.smartdevicelink.test.rpc.enums;

import com.smartdevicelink.proxy.rpc.enums.DistanceUnit;

import junit.framework.TestCase;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;


/**
 * This is a unit test class for the SmartDeviceLink library project class :
 * {@link com.smartdevicelink.proxy.rpc.enums.DistanceUnit}
 */
public class DistanceUnitTests extends TestCase {

    /**
     * Verifies that the enum values are not null upon valid assignment.
     */
    public void testValidEnums() {
        String example = "MILES";
        DistanceUnit enumMiles = DistanceUnit.valueForString(example);
        example = "KILOMETERS";
        DistanceUnit enumKilometers = DistanceUnit.valueForString(example);

        assertNotNull("MILES returned null", enumMiles);
        assertNotNull("KILOMETERS returned null", enumKilometers);
    }

    /**
     * Verifies that an invalid assignment is null.
     */
    public void testInvalidEnum() {
        String example = "mILES";
        try {
            DistanceUnit temp = DistanceUnit.valueForString(example);
            assertNull("Result of valueForString should be null.", temp);
        } catch (IllegalArgumentException exception) {
            fail("Invalid enum throws IllegalArgumentException.");
        }
    }

    /**
     * Verifies that a null assignment is invalid.
     */
    public void testNullEnum() {
        String example = null;
        try {
            DistanceUnit temp = DistanceUnit.valueForString(example);
            assertNull("Result of valueForString should be null.", temp);
        } catch (NullPointerException exception) {
            fail("Null string throws NullPointerException.");
        }
    }

    /**
     * Verifies the possible enum values of DistanceUnit.
     */
    public void testListEnum() {
        List<DistanceUnit> enumValueList = Arrays.asList(DistanceUnit.values());
        List<DistanceUnit> enumTestList = new ArrayList<DistanceUnit>();
        enumTestList.add(DistanceUnit.MILES);
        enumTestList.add(DistanceUnit.KILOMETERS);

        assertTrue("Enum value list does not match enum class list",
                enumValueList.containsAll(enumTestList) && enumTestList.containsAll(enumValueList));
    }
}