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package com.st.BlueSTSDK.Features;

import com.st.BlueSTSDK.Feature;
import com.st.BlueSTSDK.Utils.NumberConversion;

import org.junit.Assert;
import org.junit.Test;

public class TestProximityFunction {

    @Test
    public void testNullSampleProximity(){
        Assert.assertEquals(-1, FeatureProximity.getProximityDistance(null));
    }

    @Test
    public void testInvalidSampleProximity(){
        Feature.Sample s = new Feature.Sample(100,new Number[]{}, new Field[]{});
        Assert.assertEquals(-1, FeatureProximity.getProximityDistance(s));
    }

    @Test
    public void testGetSampleProximity(){
        int x = 50;
        Feature.Sample s = new Feature.Sample(100,new Number[]{x}, new Field[]{});
        Assert.assertEquals(x, FeatureProximity.getProximityDistance(s));
    }


    @Test(expected= IllegalArgumentException.class)
    public void updateWithInvalidSize() throws Throwable {
        Feature f = new FeatureProximity(null);
        UpdateFeatureUtil.callUpdate(f, 100, new byte[]{1}, 0);
    }

    @Test(expected= IllegalArgumentException.class)
    public void updateWithInvalidSizeWithOffset() throws Throwable {
        Feature f = new FeatureProximity(null);
        UpdateFeatureUtil.callUpdate(f, 100, new byte[]{1,2}, 1);
    }


    @Test
    public void testUpdate() throws Throwable {
        Feature f = new FeatureProximity(null);

        short proximity = 123;

        byte temp[] = NumberConversion.LittleEndian.int16ToBytes(proximity);

        UpdateFeatureUtil.callUpdate(f, 1, temp, 0);

        Assert.assertEquals(new Feature.Sample(1, new Integer[]{(int)proximity}, new Field[]{}),
                f.getSample());
    }

    @Test
    public void testUpdateOffset() throws Throwable {
        Feature f = new FeatureProximity(null);
        int offset =4;
        byte data[] = new byte[offset+2];

        short proximity = 123;

        byte temp[] = NumberConversion.LittleEndian.int16ToBytes(proximity);
        data[offset+0]=temp[0];
        data[offset+1]=temp[1];

        UpdateFeatureUtil.callUpdate(f, 1, data, offset);

        Assert.assertEquals(new Feature.Sample(1, new Integer[]{(int)proximity}, new Field[]{}),
                f.getSample());
    }

}
