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package com.google.refine.expr.functions;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;

import org.testng.annotations.Test;

import com.google.refine.RefineTest;
import com.google.refine.expr.EvalError;
import com.google.refine.expr.util.CalendarParser;
import com.google.refine.expr.util.CalendarParserException;
import com.google.refine.util.TestUtils;

public class ToStringTests extends RefineTest {
    @Test
    public void serializeToString() {
        String json = "{\"description\":\"Returns o converted to a string\",\"params\":\"o, string format (optional)\",\"returns\":\"string\"}";
        TestUtils.isSerializedTo(new ToString(), json);
    }

    @Test
    public void testToString() throws CalendarParserException {
        assertTrue(invoke("toString") instanceof EvalError);
        assertEquals(invoke("toString", (Object) null), "");
        assertEquals(invoke("toString", Long.valueOf(100)), "100");
        assertEquals(invoke("toString", Double.valueOf(100.0)), "100.0");
        assertEquals(invoke("toString", Double.valueOf(100.0),"%.0f"), "100");

        String inputDate = "2013-06-01";
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDate)), "2013-06-01T00:00:00Z");
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDate), "yyyy-MM-dd"), "2013-06-01");
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDate), "yyyy/dd/MM"), "2013/01/06");
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDate), "yyyy-MM-dd hh:mm:ss"), "2013-06-01 12:00:00");

        String inputDateTime = "2013-06-01 13:12:11";
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDateTime)), "2013-06-01T13:12:11Z");
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDateTime), "yyyy-MM-dd"), "2013-06-01");
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDateTime), "yyyy-MM-dd hh:mm:ss"), "2013-06-01 01:12:11");
        assertEquals(invoke("toString", CalendarParser.parseAsOffsetDateTime(inputDateTime), "yyyy-MM-dd HH:mm:ss"), "2013-06-01 13:12:11");
    }

}

