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 * Copyright (C) 2018, Antonin Delpeuch
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 * 
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package com.google.refine.commands.browsing;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.testng.Assert.assertTrue;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Arrays;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.fasterxml.jackson.databind.node.ObjectNode;
import edu.mit.simile.vicino.distances.LevenshteinDistance;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import com.google.refine.clustering.binning.KeyerFactory;
import com.google.refine.clustering.binning.Metaphone3Keyer;
import com.google.refine.clustering.knn.DistanceFactory;
import com.google.refine.clustering.knn.VicinoDistance;
import com.google.refine.commands.Command;
import com.google.refine.util.JSONUtilities;
import com.google.refine.util.ParsingUtilities;

public class GetClusteringFunctionsAndDistancesCommandTest {

    protected HttpServletRequest request = null;
    protected HttpServletResponse response = null;
    protected StringWriter writer = null;
    protected Command command = null;

    @BeforeMethod
    public void setUp() throws IOException {
        request = mock(HttpServletRequest.class);
        response = mock(HttpServletResponse.class);
        command = new GetClusteringFunctionsAndDistancesCommand();
        writer = new StringWriter();
        when(response.getWriter()).thenReturn(new PrintWriter(writer));

        DistanceFactory.put("levenshtein", new VicinoDistance(new LevenshteinDistance()));
        KeyerFactory.put("metaphone3", new Metaphone3Keyer());
    }

    @Test
    public void testGetFunctionsAndKeyers() throws ServletException, IOException {
        command.doGet(request, response);
        ObjectNode result = ParsingUtilities.mapper.readValue(writer.toString(), ObjectNode.class);
        assertTrue(Arrays.asList(JSONUtilities.getStringArray(result, "keyers")).contains("metaphone3"));
        assertTrue(Arrays.asList(JSONUtilities.getStringArray(result, "distances")).contains("levenshtein"));
    }
}
