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TestDateFormatParser.java
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TestDateFormatParser.java
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/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.presto.teradata.functions.dateformat;
import com.facebook.presto.spi.PrestoException;
import com.facebook.presto.teradata.functions.DateFormat;
import org.antlr.v4.runtime.Token;
import org.testng.annotations.Test;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.stream.Collectors;
import static com.facebook.presto.teradata.functions.dateformat.DateFormatParser.Mode.FORMATTER;
import static com.facebook.presto.teradata.functions.dateformat.DateFormatParser.Mode.PARSER;
import static java.util.Arrays.asList;
import static org.testng.Assert.assertEquals;
public class TestDateFormatParser
{
@Test
public void testTokenize()
{
assertEquals(
DateFormatParser.tokenize("yyyy mm").stream().map(Token::getType).collect(Collectors.toList()),
asList(DateFormat.YYYY, DateFormat.TEXT, DateFormat.MM));
}
@Test
public void testGreedinessLongFirst()
{
assertEquals(1, DateFormatParser.tokenize("yy").size());
assertEquals(1, DateFormatParser.tokenize("yyyy").size());
assertEquals(2, DateFormatParser.tokenize("yyyyyy").size());
}
@Test
public void testInvalidTokenTokenize()
{
assertEquals(
DateFormatParser.tokenize("ala").stream().map(Token::getType).collect(Collectors.toList()),
asList(DateFormat.UNRECOGNIZED, DateFormat.UNRECOGNIZED, DateFormat.UNRECOGNIZED));
}
@Test(expectedExceptions = PrestoException.class)
public void testInvalidTokenCreate1()
{
DateFormatParser.createDateTimeFormatter("ala", FORMATTER);
}
@Test(expectedExceptions = PrestoException.class)
public void testInvalidTokenCreate2()
{
DateFormatParser.createDateTimeFormatter("yyym/mm/dd", FORMATTER);
}
@Test(expectedExceptions = PrestoException.class)
public void testParserInvalidTokenCreate1()
{
DateFormatParser.createDateTimeFormatter("ala", PARSER);
}
@Test(expectedExceptions = PrestoException.class)
public void testParserInvalidTokenCreate2()
{
DateFormatParser.createDateTimeFormatter("yyym/mm/dd", PARSER);
}
@Test
public void testCreateDateTimeFormatter()
{
DateTimeFormatter formatter = DateFormatParser.createDateTimeFormatter("yyyy/mm/dd", FORMATTER);
assertEquals(formatter.format(LocalDateTime.of(1988, 4, 8, 0, 0)), "1988/04/08");
}
@Test
public void testCreateDateTimeParser()
{
DateTimeFormatter formatter = DateFormatParser.createDateTimeFormatter("yyyy/mm/dd", PARSER);
assertEquals(LocalDateTime.parse("1988/04/08", formatter), LocalDateTime.of(1988, 4, 8, 0, 0));
}
}