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diff --git a/third_party/java/jopt-simple/src/test/java/joptsimple/util/DateConverterTest.java b/third_party/java/jopt-simple/src/test/java/joptsimple/util/DateConverterTest.java
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+/*
+ The MIT License
+
+ Copyright (c) 2004-2015 Paul R. Holser, Jr.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+package joptsimple.util;
+
+import java.text.DateFormat;
+import java.text.FieldPosition;
+import java.text.NumberFormat;
+import java.text.ParsePosition;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import static java.text.DateFormat.*;
+
+import joptsimple.ValueConversionException;
+import joptsimple.ValueConverter;
+import org.joda.time.LocalDate;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+import static joptsimple.util.DateConverter.*;
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+import static org.junit.rules.ExpectedException.*;
+
+/**
+ * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
+ */
+public class DateConverterTest {
+    @Rule public final ExpectedException thrown = none();
+
+    private DateFormat notASimpleDateFormat;
+    private SimpleDateFormat monthDayYear;
+
+    @Before
+    public void setUp() {
+        notASimpleDateFormat = new DateFormat() {
+            private static final long serialVersionUID = -1L;
+
+            {
+                setNumberFormat( NumberFormat.getInstance() );
+            }
+
+            @Override
+            public StringBuffer format( Date date, StringBuffer toAppendTo, FieldPosition fieldPosition ) {
+                return null;
+            }
+
+            @Override
+            public Date parse( String source, ParsePosition pos ) {
+                return null;
+            }
+        };
+
+        monthDayYear = new SimpleDateFormat( "MM/dd/yyyy" );
+    }
+
+    @Test( expected = NullPointerException.class )
+    public void rejectsNullDateFormatter() {
+        new DateConverter( null );
+    }
+
+    @Test
+    public void shouldConvertValuesToDatesUsingADateFormat() {
+        ValueConverter<Date> converter = new DateConverter( monthDayYear );
+
+        assertEquals( new LocalDate( 2009, 1, 24 ).toDate(), converter.convert( "01/24/2009" ) );
+    }
+
+    @Test
+    public void rejectsNonParsableValues() {
+        thrown.expect( ValueConversionException.class );
+
+        new DateConverter( getDateInstance() ).convert( "@(#*^" );
+    }
+
+    @Test
+    public void rejectsValuesThatDoNotEntirelyMatch() {
+        thrown.expect( ValueConversionException.class );
+
+        new DateConverter( monthDayYear ).convert( "12/25/09 00:00:00" );
+    }
+
+    @Test
+    public void shouldCreateSimpleDateFormatConverter() {
+        assertEquals( new LocalDate( 2009, 7, 4 ).toDate(), datePattern( "MM/dd/yyyy" ).convert( "07/04/2009" ) );
+    }
+
+    @Test
+    public void rejectsNullDatePattern() {
+        thrown.expect( NullPointerException.class );
+
+        datePattern( null );
+    }
+
+    @Test
+    public void shouldRaiseExceptionThatContainsDatePatternAndValue() {
+        thrown.expect( ValueConversionException.class );
+        thrown.expectMessage( "qwe" );
+        thrown.expectMessage( monthDayYear.toPattern() );
+
+        new DateConverter( monthDayYear ).convert( "qwe" );
+    }
+
+    @Test
+    public void shouldRaiseExceptionThatContainsValueOnlyIfNotASimpleDateFormat() {
+        thrown.expect( ValueConversionException.class );
+        thrown.expectMessage( "asdf" );
+        thrown.expectMessage( not( containsString( notASimpleDateFormat.toString() ) ) );
+
+        new DateConverter( notASimpleDateFormat ).convert( "asdf" );
+    }
+
+    @Test
+    public void shouldAnswerCorrectValueType() {
+        assertSame( Date.class, new DateConverter( monthDayYear ).valueType() );
+    }
+
+    @Test
+    public void shouldGiveNoValuePatternIfFormatterNotASimpleDateFormat() {
+        assertEquals( "", new DateConverter( notASimpleDateFormat ).valuePattern() );
+    }
+
+    @Test
+    public void shouldGiveValuePatternIfFormatterIsASimpleDateFormat() {
+        assertEquals( monthDayYear.toPattern(), datePattern( monthDayYear.toPattern() ).valuePattern() );
+    }
+}