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package com.st.BlueMS.demos.BlueVoice;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.SharedPreferences;

import com.st.BlueMS.demos.BlueVoice.ASRServices.GoogleASR.GoogleASRKey;

import junit.framework.Assert;

import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.anyString;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

public class GoogleASRKeyTest {

    private static final String FAKE_KEY ="012345678901234567890123456789012345678";
    private static final String INVALID_SMALL_KEY ="SMALL KEY";

    @Test
    public void keyMustHaveLength39(){
        try {
            new GoogleASRKey(FAKE_KEY);
        }catch (Exception e) {
            Assert.fail("Exception Throw: " + e);
        }
    }

    @Test(expected = IllegalArgumentException.class)
    public void ExceptionIsThrowIfLengthIsSmaller(){
        new GoogleASRKey(INVALID_SMALL_KEY);
    }

    @Test(expected = IllegalArgumentException.class)
    public void ExceptionIsThrowIfLengthIsBigger(){
        new GoogleASRKey(FAKE_KEY+"X");
    }

    @Test
    public void keyIsStoredInTheClass(){
        GoogleASRKey key = new GoogleASRKey(FAKE_KEY);
        Assert.assertEquals(FAKE_KEY,key.getKey());
    }


    @Test
    @SuppressLint("CommitPrefEdits")
    public void keyIsStoredInPreference(){
        Context context = mock(Context.class);
        SharedPreferences pref = mock(SharedPreferences.class);
        SharedPreferences.Editor editor = mock(SharedPreferences.Editor.class);

        when(context.getSharedPreferences(anyString(),anyInt())).thenReturn(pref);
        when(pref.edit()).thenReturn(editor);
        when(editor.putString(anyString(),anyString())).thenReturn(editor);

        GoogleASRKey key = new GoogleASRKey(FAKE_KEY);
        key.store(context);

        verify(pref).edit();
        verify(editor).putString(anyString(),eq(FAKE_KEY));

    }

    @Test
    public void loadKeyStoredInPreference(){
        Context context = mock(Context.class);
        SharedPreferences pref = mock(SharedPreferences.class);
        when(context.getSharedPreferences(anyString(),anyInt())).thenReturn(pref);
        when(pref.getString(anyString(),anyString())).thenReturn(FAKE_KEY);
        GoogleASRKey key = GoogleASRKey.loadKey(context);

        assertNotNull(key);
        assertEquals(FAKE_KEY,key.getKey());
    }

    @Test
    public void returnNullIfKeyIsNotStoredInPreference(){
        Context context = mock(Context.class);
        SharedPreferences pref = mock(SharedPreferences.class);
        when(context.getSharedPreferences(anyString(),anyInt())).thenReturn(pref);
        when(pref.getString(anyString(),anyString())).thenReturn(null);

        GoogleASRKey key = GoogleASRKey.loadKey(context);

        assertNull(key);
    }

    @Test
    public void returnNullIfInvalidKeyIsStoredInPreference(){
        Context context = mock(Context.class);
        SharedPreferences pref = mock(SharedPreferences.class);
        when(context.getSharedPreferences(anyString(),anyInt())).thenReturn(pref);
        when(pref.getString(anyString(),anyString())).thenReturn(INVALID_SMALL_KEY);
        GoogleASRKey key = GoogleASRKey.loadKey(context);

        assertNull(key);
    }

}