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diff --git a/third_party/java/jopt-simple/src/test/java/joptsimple/RequiredUnlessTest.java b/third_party/java/jopt-simple/src/test/java/joptsimple/RequiredUnlessTest.java
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+++ b/third_party/java/jopt-simple/src/test/java/joptsimple/RequiredUnlessTest.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;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static java.util.Arrays.asList;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+import static org.junit.Assert.assertEquals;
+
+public class RequiredUnlessTest extends AbstractOptionParserFixture {
+    @Before
+    public void configureParser() {
+        OptionSpec<Void> anonymous = parser.accepts( "anonymous" );
+        parser.acceptsAll( asList( "username", "userid" ) ).requiredUnless( "anonymous" ).withRequiredArg();
+        parser.acceptsAll( asList( "password", "pwd" ) ).requiredUnless( anonymous ).withRequiredArg();
+        parser.accepts( "?" ).forHelp();
+    }
+
+    @Test
+    public void rejectsCommandLineMissingConditionallyRequiredOption() {
+        thrown.expect( MissingRequiredOptionsException.class );
+
+        parser.parse( "" );
+    }
+
+    @Test
+    public void rejectsCommandLineWithNotAllConditionallyRequiredOptionsPresent() {
+        thrown.expect( MissingRequiredOptionsException.class );
+
+        parser.parse( "--username", "joe" );
+    }
+
+    @Test
+    public void acceptsCommandLineWithConditionallyRequiredOptionsPresent() {
+        OptionSet options = parser.parse( "--userid", "joe", "--password=secret" );
+
+        assertOptionNotDetected( options, "anonymous" );
+        assertOptionDetected( options, "username" );
+        assertOptionDetected( options, "password" );
+        assertEquals( singletonList( "joe" ), options.valuesOf( "username" ) );
+        assertEquals( singletonList( "secret" ), options.valuesOf( "password" ) );
+        assertEquals( emptyList(), options.nonOptionArguments() );
+    }
+
+    @Test
+    public void acceptsOptionWithPrerequisite() {
+        OptionSet options = parser.parse( "--anonymous" );
+
+        assertOptionDetected( options, "anonymous" );
+        assertEquals( emptyList(), options.nonOptionArguments() );
+    }
+
+    @Test
+    public void acceptsOptionWithPrerequisiteAsNormal() {
+        OptionSet options = parser.parse( "--anonymous", "--pwd", "secret" );
+
+        assertOptionDetected( options, "anonymous" );
+        assertOptionDetected( options, "pwd" );
+        assertEquals( singletonList( "secret" ), options.valuesOf( "pwd" ) );
+        assertEquals( emptyList(), options.nonOptionArguments() );
+    }
+
+    @Test
+    public void rejectsOptionNotAlreadyConfigured() {
+        thrown.expect( UnconfiguredOptionException.class );
+
+        parser.accepts( "foo" ).requiredIf( "bar" );
+    }
+
+    @Test
+    public void rejectsOptionSpecNotAlreadyConfigured() {
+        thrown.expect( UnconfiguredOptionException.class );
+
+        parser.accepts( "foo" ).requiredIf( "bar" );
+    }
+
+    @Test
+    public void presenceOfHelpOptionNegatesRequiredUnlessness() {
+        OptionSet options = parser.parse( "-?" );
+
+        assertOptionDetected( options, "?" );
+        assertEquals( emptyList(), options.nonOptionArguments() );
+    }
+}