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

import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;

import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.refine.RefineTest;
import com.google.refine.util.TestUtils;


public class NowTests extends RefineTest {
    private  DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd-HH:mm:ss.SSSSSSSSSX");
    
    @Override
    @BeforeTest
    public void init() {
        logger = LoggerFactory.getLogger(this.getClass());
    }

    @Test
    public void testNow() {        
        // 2018-4-30 23:55:44
        OffsetDateTime source = OffsetDateTime.parse("20180430-23:55:44.000789000Z",
                formatter);
        
        Assert.assertTrue(invoke("now") instanceof OffsetDateTime);
        Assert.assertTrue(((OffsetDateTime)invoke("now")).isAfter(source));
    }

    @Test
    public void serializeNow() {
        String json = "{\"description\":\"Returns the current time\",\"returns\":\"date\"}";
        TestUtils.isSerializedTo(new Now(), json);
    }
    
}
