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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.expr.EvalError;
import com.google.refine.expr.util.CalendarParser;
import com.google.refine.expr.util.CalendarParserException;
import com.google.refine.grel.GrelTestBase;

public class ToStringTests extends GrelTestBase {

    @Test
    public void testToString() throws CalendarParserException {
        assertTrue(invoke("toString") instanceof EvalError);
        assertEquals(invoke("toString", (Object) null), "");
        assertEquals(invoke("toString", 100L), "100");
        assertEquals(invoke("toString", 100.0), "100.0");
        assertEquals(invoke("toString", 100.0, "%.0f"), "100");
        assertEquals(invoke("toString", 100.0, "%.1f"), String.format("%.1f", 100D));

        // test with other radix (2, 8, 10, 16)
        assertEquals(invoke("toString", 100L, "%x"), "64");
        assertEquals(invoke("toString", 100L, "%o"), "144");
        assertEquals(invoke("toString", 100L, "%d"), "100");
        assertEquals(invoke("toString", 100L, "%X"), "64");

        // test with invalid radix
        assertTrue(invoke("toString", 100L, "%z") instanceof EvalError);
        assertTrue(invoke("toString", 100L, "%") instanceof EvalError);
        assertTrue(invoke("toString", 100L, "%.") instanceof EvalError);
        assertTrue(invoke("toString", 100L, "%0") instanceof EvalError);
        assertTrue(invoke("toString", 12L, "%2.2f") instanceof EvalError);

        // test with large number
        assertEquals(invoke("toString", 1000000000000000000L, "%d"), "1000000000000000000");

        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");
    }

}
