package com.smartdevicelink.test.rpc.enums;

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

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.SamplingRate}
 */
public class SamplingRateTests extends TestCase {

    /**
     * Verifies that the enum values are not null upon valid assignment.
     */
    public void testValidEnums() {
        String example = "8KHZ";
        SamplingRate enum8Khz = SamplingRate.valueForString(example);
        example = "16KHZ";
        SamplingRate enum16Khz = SamplingRate.valueForString(example);
        example = "22KHZ";
        SamplingRate enum22Khz = SamplingRate.valueForString(example);
        example = "44KHZ";
        SamplingRate enum44Khz = SamplingRate.valueForString(example);

        assertNotNull("8KHZ returned null", enum8Khz);
        assertNotNull("16KHZ returned null", enum16Khz);
        assertNotNull("22KHZ returned null", enum22Khz);
        assertNotNull("44KHZ returned null", enum44Khz);
    }

    /**
     * Verifies that an invalid assignment is null.
     */
    public void testInvalidEnum() {
        String example = "8kHz";
        try {
            SamplingRate temp = SamplingRate.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 {
            SamplingRate temp = SamplingRate.valueForString(example);
            assertNull("Result of valueForString should be null.", temp);
        } catch (NullPointerException exception) {
            fail("Null string throws NullPointerException.");
        }
    }

    /**
     * Verifies the possible enum values of SamplingRate.
     */
    public void testListEnum() {
        List<SamplingRate> enumValueList = Arrays.asList(SamplingRate.values());

        List<SamplingRate> enumTestList = new ArrayList<SamplingRate>();
        enumTestList.add(SamplingRate._8KHZ);
        enumTestList.add(SamplingRate._16KHZ);
        enumTestList.add(SamplingRate._22KHZ);
        enumTestList.add(SamplingRate._44KHZ);

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