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package com.google.refine.expr.functions.arrays;

import org.testng.annotations.Test;

import com.google.refine.expr.ParsingException;
import com.google.refine.grel.GrelTestBase;

public class JoinTests extends GrelTestBase {

    @Test
    public void joinArray() throws ParsingException {
        String[] test = { "[2,1,3].join('|')", "2|1|3" };
        parseEval(bindings, test);

        // TODO: This is current behavior, but is it what we want?
        String[] test1 = { "[2,null,3].join(', ')", "2, 3" };
        parseEval(bindings, test1);

        String[] test2 = { "['z','b','c','a'].join('-')", "z-b-c-a" };
        parseEval(bindings, test2);

        // TODO: Do we really want the following two tests to return different results?
        String[] test3 = { "['z', null,'c','a'].join('-')", "z-c-a" };
        parseEval(bindings, test3);
        String[] test4 = { "['z', '','c','a'].join('-')", "z--c-a" };
        parseEval(bindings, test4);

        // Issue 3290 - Make sure leading empty strings don't get skipped
        parseEval(bindings, new String[] { "['',2,3].join('|')", "|2|3" });
        parseEval(bindings, new String[] { "[1,'',3].join('|')", "1||3" });
        parseEval(bindings, new String[] { "[1,2,''].join('|')", "1|2|" });
        parseEval(bindings, new String[] { "['','',''].join('|')", "||" });

        // Tests for JSON array
        // First test below is desired behavior, second is current array behavior
//        parseEval(bindings, new String[] { "'[null,null,null]'.parseJson().join('|')", "||" } );
        parseEval(bindings, new String[] { "'[null,null,null]'.parseJson().join('|')", "" });
        parseEval(bindings, new String[] { "'[\"\",2,3]'.parseJson().join('|')", "|2|3" });
        parseEval(bindings, new String[] { "'[1,2,\"\"]'.parseJson().join('|')", "1|2|" });
        parseEval(bindings, new String[] { "'[\"\",\"\",\"\"]'.parseJson().join('|')", "||" });

        // TODO: Add tests for List<Object> returned from ExpressionUtils.toObjectList()
    }

}
