src/test/java/com/google/devtools/common/options/OptionsTest.java - bazel - Git at Google

 // Copyright 2014 The Bazel Authors. All rights reserved.
 //
 // 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.google.devtools.common.options;

 import static com.google.common.truth.Truth.assertThat;
 import static java.util.Arrays.asList;
 import static org.junit.Assert.assertThrows;

 import com.google.common.testing.EqualsTester;
 import java.net.MalformedURLException;
 import java.net.URL;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;

 /**
  * Test for {@link Options}.
  */
 @RunWith(JUnit4.class)
 public class OptionsTest {

   private static final String[] NO_ARGS = {};

   public static class HttpOptions extends OptionsBase {

     @Option(
       name = "host",
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "www.google.com",
       help = "The URL at which the server will be running."
     )
     public String host;

     @Option(
       name = "port",
       abbrev = 'p',
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "80",
       help = "The port at which the server will be running."
     )
     public int port;

     @Option(
       name = "debug",
       abbrev = 'd',
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "false",
       help = "debug"
     )
     public boolean isDebugging;

     @Option(
       name = "tristate",
       abbrev = 't',
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "auto",
       help = "tri-state option returning auto by default"
     )
     public TriState triState;

     @Option(
       name = "special",
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "null",
       expansion = {"--host=special.google.com", "--port=8080"}
     )
     public Void special;
   }

   @Test
   public void paragraphFill() throws Exception {
     // TODO(bazel-team): don't include trailing space after last word in line.
     String input = "The quick brown fox jumps over the lazy dog.";

     assertThat(OptionsUsage.paragraphFill(input, 2, 13))
         .isEqualTo("  The quick \n  brown fox \n  jumps over \n  the lazy \n" + "  dog.");
     assertThat(OptionsUsage.paragraphFill(input, 3, 19))
         .isEqualTo("   The quick brown \n   fox jumps over \n   the lazy dog.");

     String input2 = "The quick brown fox jumps\nAnother paragraph.";
     assertThat(OptionsUsage.paragraphFill(input2, 2, 23))
         .isEqualTo("  The quick brown fox \n  jumps\n  Another paragraph.");
   }

   @Test
   public void getsDefaults() throws OptionsParsingException {
     Options<HttpOptions> options = Options.parse(HttpOptions.class, NO_ARGS);
     String[] remainingArgs = options.getRemainingArgs();
     HttpOptions webFlags = options.getOptions();

     assertThat(webFlags.host).isEqualTo("www.google.com");
     assertThat(webFlags.port).isEqualTo(80);
     assertThat(webFlags.isDebugging).isFalse();
     assertThat(webFlags.triState).isEqualTo(TriState.AUTO);
     assertThat(remainingArgs).hasLength(0);
   }

   @Test
   public void objectMethods() throws OptionsParsingException {
     String[] args = { "--host", "foo", "--port", "80" };
     HttpOptions left =
         Options.parse(HttpOptions.class, args).getOptions();
     HttpOptions likeLeft =
         Options.parse(HttpOptions.class, args).getOptions();
     String [] rightArgs = {"--host", "other", "--port", "90" };
     HttpOptions right =
         Options.parse(HttpOptions.class, rightArgs).getOptions();

     String toString = left.toString();
     // Don't rely on Set.toString iteration order:
     assertThat(toString)
         .startsWith("com.google.devtools.common.options.OptionsTest" + "$HttpOptions{");
     assertThat(toString).contains("host=foo");
     assertThat(toString).contains("port=80");
     assertThat(toString).endsWith("}");

     new EqualsTester().addEqualityGroup(left).testEquals();
     assertThat(left.toString()).isEqualTo(likeLeft.toString());
     assertThat(left).isEqualTo(likeLeft);
     assertThat(likeLeft).isEqualTo(left);
     assertThat(left).isNotEqualTo(right);
     assertThat(right).isNotEqualTo(left);
     assertThat(left).isNotNull();
     assertThat(likeLeft).isNotNull();
     assertThat(likeLeft.hashCode()).isEqualTo(likeLeft.hashCode());
     assertThat(likeLeft.hashCode()).isEqualTo(left.hashCode());
     // Strictly speaking this is not required for hashCode to be correct,
     // but a good hashCode should be different at least for some values. So,
     // we're making sure that at least this particular pair of inputs yields
     // different values.
     assertThat(left.hashCode()).isNotEqualTo(right.hashCode());
   }

   @Test
   public void equals() throws OptionsParsingException {
     String[] args = { "--host", "foo", "--port", "80" };
     HttpOptions options1 =  Options.parse(HttpOptions.class, args).getOptions();

     String[] args2 = { "-p", "80", "--host", "foo" };
     HttpOptions options2 =  Options.parse(HttpOptions.class, args2).getOptions();
     // Order/abbreviations shouldn't matter.
     assertThat(options1).isEqualTo(options2);

     // Explicitly setting a default shouldn't matter.
     assertThat(Options.parse(HttpOptions.class, "--port", "80").getOptions())
         .isEqualTo(Options.parse(HttpOptions.class).getOptions());

     assertThat(Options.parse(HttpOptions.class, "--port", "3").getOptions())
         .isNotEqualTo(Options.parse(HttpOptions.class).getOptions());
   }

   @Test
   public void getsFlagsProvidedInArguments()
       throws OptionsParsingException {
     String[] args = {"--host", "google.com",
                      "-p", "8080",  // short form
                      "--debug"};
     Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
     String[] remainingArgs = options.getRemainingArgs();
     HttpOptions webFlags = options.getOptions();

     assertThat(webFlags.host).isEqualTo("google.com");
     assertThat(webFlags.port).isEqualTo(8080);
     assertThat(webFlags.isDebugging).isTrue();
     assertThat(remainingArgs).hasLength(0);
   }

   @Test
   public void getsFlagsProvidedWithEquals() throws OptionsParsingException {
     String[] args = {"--host=google.com",
                      "--port=8080",
                      "--debug"};
     Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
     String[] remainingArgs = options.getRemainingArgs();
     HttpOptions webFlags = options.getOptions();

     assertThat(webFlags.host).isEqualTo("google.com");
     assertThat(webFlags.port).isEqualTo(8080);
     assertThat(webFlags.isDebugging).isTrue();
     assertThat(remainingArgs).hasLength(0);
   }

   @Test
   public void booleanNo() throws OptionsParsingException {
     Options<HttpOptions> options =
         Options.parse(HttpOptions.class, new String[]{"--nodebug", "--notristate"});
     HttpOptions webFlags = options.getOptions();
     assertThat(webFlags.isDebugging).isFalse();
     assertThat(webFlags.triState).isEqualTo(TriState.NO);
   }

   @Test
   public void booleanAbbrevMinus() throws OptionsParsingException {
     Options<HttpOptions> options =
         Options.parse(HttpOptions.class, new String[]{"-d-", "-t-"});
     HttpOptions webFlags = options.getOptions();
     assertThat(webFlags.isDebugging).isFalse();
     assertThat(webFlags.triState).isEqualTo(TriState.NO);
   }

   @Test
   public void boolean0() throws OptionsParsingException {
     Options<HttpOptions> options =
         Options.parse(HttpOptions.class, new String[]{"--debug=0", "--tristate=0"});
     HttpOptions webFlags = options.getOptions();
     assertThat(webFlags.isDebugging).isFalse();
     assertThat(webFlags.triState).isEqualTo(TriState.NO);
   }

   @Test
   public void boolean1() throws OptionsParsingException {
     Options<HttpOptions> options =
         Options.parse(HttpOptions.class, new String[]{"--debug=1", "--tristate=1"});
     HttpOptions webFlags = options.getOptions();
     assertThat(webFlags.isDebugging).isTrue();
     assertThat(webFlags.triState).isEqualTo(TriState.YES);
   }

   @Test
   public void retainsStuffThatsNotOptions() throws OptionsParsingException {
     String[] args = {"these", "aint", "options"};
     Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
     String[] remainingArgs = options.getRemainingArgs();
     assertThat(asList(remainingArgs)).isEqualTo(asList(args));
   }

   @Test
   public void retainsStuffThatsNotComplexOptions()
       throws OptionsParsingException {
     String[] args = {"--host", "google.com",
                      "notta",
                      "--port=8080",
                      "option",
                      "--debug=true"};
     String[] notoptions = {"notta", "option" };
     Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
     String[] remainingArgs = options.getRemainingArgs();
     assertThat(asList(remainingArgs)).isEqualTo(asList(notoptions));
   }

   @Test
   public void wontParseUnknownOptions() {
     String [] args = { "--unknown", "--other=23", "--options" };
     OptionsParsingException e =
         assertThrows(OptionsParsingException.class, () -> Options.parse(HttpOptions.class, args));
     assertThat(e).hasMessageThat().isEqualTo("Unrecognized option: --unknown");
   }

   @Test
   public void requiresOptionValue() {
     String[] args = {"--port"};
     OptionsParsingException e =
         assertThrows(OptionsParsingException.class, () -> Options.parse(HttpOptions.class, args));
     assertThat(e).hasMessageThat().isEqualTo("Expected value after --port");
   }

   @Test
   public void handlesDuplicateOptions_full() throws Exception {
     String[] args = {"--port=80", "--port", "81"};
     Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
     HttpOptions webFlags = options.getOptions();
     assertThat(webFlags.port).isEqualTo(81);
   }

   @Test
   public void handlesDuplicateOptions_abbrev() throws Exception {
     String[] args = {"--port=80", "-p", "81"};
     Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
     HttpOptions webFlags = options.getOptions();
     assertThat(webFlags.port).isEqualTo(81);
   }

   @Test
   public void duplicateOptionsOkWithSameValues() throws Exception {
     // These would throw OptionsParsingException if they failed.
     Options.parse(HttpOptions.class,"--port=80", "--port", "80");
     Options.parse(HttpOptions.class, "--port=80", "-p", "80");
   }

   @Test
   public void isPickyAboutBooleanValues() {
     OptionsParsingException e =
         assertThrows(
             OptionsParsingException.class,
             () -> Options.parse(HttpOptions.class, new String[] {"--debug=not_a_boolean"}));
     assertThat(e)
         .hasMessageThat()
         .isEqualTo(
             "While parsing option --debug=not_a_boolean: " + "\'not_a_boolean\' is not a boolean");
   }

   @Test
   public void isPickyAboutBooleanNos() {
     OptionsParsingException e =
         assertThrows(
             OptionsParsingException.class,
             () -> Options.parse(HttpOptions.class, new String[] {"--nodebug=1"}));
     assertThat(e).hasMessageThat().isEqualTo("Unexpected value after boolean option: --nodebug=1");
   }

   @Test
   public void usageForBuiltinTypesNoExpansion() {
     String usage = Options.getUsage(HttpOptions.class);
     // We can't rely on the option ordering.
     assertThat(usage)
         .contains("  --[no]debug [-d] (a boolean; default: \"false\")\n" + "    debug");
     assertThat(usage)
         .contains(
             "  --host (a string; default: \"www.google.com\")\n"
                 + "    The URL at which the server will be running.");
     assertThat(usage)
         .contains(
             "  --port [-p] (an integer; default: \"80\")\n"
                 + "    The port at which the server will be running.");
     assertThat(usage)
         .contains(
             "  --[no]tristate [-t] (a tri-state (auto, yes, no); default: \"auto\")\n"
                 + "    tri-state option returning auto by default");
   }

   @Test
   public void usageForStaticExpansion() {
     String usage = Options.getUsage(HttpOptions.class);
     assertThat(usage)
         .contains("  --special\n      Expands to: --host=special.google.com --port=8080");
   }

   public static class NullTestOptions extends OptionsBase {
     @Option(
       name = "host",
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "null",
       help = "The URL at which the server will be running."
     )
     public String host;

     @Option(
       name = "none",
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "null",
       expansion = {"--host=www.google.com"},
       help = "An expanded option."
     )
     public Void none;
   }

   @Test
   public void usageForNullDefault() {
     String usage = Options.getUsage(NullTestOptions.class);
     assertThat(usage)
         .contains(
             "  --host (a string; default: see description)\n"
                 + "    The URL at which the server will be running.");
     assertThat(usage)
         .contains(
             "  --none\n" + "    An expanded option.\n" + "      Expands to: --host=www.google.com");
   }

   public static class MyURLConverter implements Converter<URL> {

     @Override
     public URL convert(String input) throws OptionsParsingException {
       try {
         return new URL(input);
       } catch (MalformedURLException e) {
         throw new OptionsParsingException("Could not convert '" + input + "': "
                                           + e.getMessage());
       }
     }

     @Override
     public String getTypeDescription() {
       return "a url";
     }

   }

   public static class UsesCustomConverter extends OptionsBase {

     @Option(
       name = "url",
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "http://www.google.com/",
       converter = MyURLConverter.class
     )
     public URL url;
   }

   @Test
   public void customConverter() throws Exception {
     Options<UsesCustomConverter> options =
       Options.parse(UsesCustomConverter.class, new String[0]);
     URL expected = new URL("http://www.google.com/");
     assertThat(options.getOptions().url).isEqualTo(expected);
   }

   @Test
   public void customConverterThrowsException() throws Exception {
     String[] args = {"--url=a_malformed:url"};
     OptionsParsingException e =
         assertThrows(
             OptionsParsingException.class, () -> Options.parse(UsesCustomConverter.class, args));
     assertThat(e)
         .hasMessageThat()
         .isEqualTo(
             "While parsing option --url=a_malformed:url: "
                 + "Could not convert 'a_malformed:url': "
                 + "no protocol: a_malformed:url");
   }

   @Test
   public void usageWithCustomConverter() {
     assertThat(Options.getUsage(UsesCustomConverter.class))
         .isEqualTo("  --url (a url; default: \"http://www.google.com/\")\n");
   }

   @Test
   public void unknownBooleanOption() {
     OptionsParsingException e =
         assertThrows(
             OptionsParsingException.class,
             () -> Options.parse(HttpOptions.class, new String[] {"--no-debug"}));
     assertThat(e).hasMessageThat().isEqualTo("Unrecognized option: --no-debug");
   }

   public static class J extends OptionsBase {
     @Option(
       name = "j",
       documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
       effectTags = {OptionEffectTag.NO_OP},
       defaultValue = "null"
     )
     public String string;
   }
   @Test
   public void nullDefaultForReferenceTypeOption() throws Exception {
     J options = Options.parse(J.class, NO_ARGS).getOptions();
     assertThat(options.string).isNull();
   }

   @Test
   public void nullIsNotInterpretedSpeciallyExceptAsADefaultValue() throws Exception {
     HttpOptions options =
         Options.parse(HttpOptions.class,
                       new String[] { "--host", "null" }).getOptions();
     assertThat(options.host).isEqualTo("null");
   }

   @Test
   public void nonDecimalRadicesForIntegerOptions() throws Exception {
     Options<HttpOptions> options =
         Options.parse(HttpOptions.class, new String[] { "--port", "0x51"});
     assertThat(options.getOptions().port).isEqualTo(81);
   }

   @Test
   public void expansionOptionSimple() throws Exception {
     Options<HttpOptions> options =
       Options.parse(HttpOptions.class, new String[] {"--special"});
     assertThat(options.getOptions().host).isEqualTo("special.google.com");
     assertThat(options.getOptions().port).isEqualTo(8080);
   }

   @Test
   public void expansionOptionOverride() throws Exception {
     Options<HttpOptions> options =
       Options.parse(HttpOptions.class, new String[] {"--port=90", "--special", "--host=foo"});
     assertThat(options.getOptions().host).isEqualTo("foo");
     assertThat(options.getOptions().port).isEqualTo(8080);
   }

   @Test
   public void expansionOptionEquals() throws Exception {
     Options<HttpOptions> options1 =
       Options.parse(HttpOptions.class, new String[] { "--host=special.google.com", "--port=8080"});
     Options<HttpOptions> options2 =
       Options.parse(HttpOptions.class, new String[] { "--special" });
     assertThat(options1.getOptions()).isEqualTo(options2.getOptions());
   }
 }
	// Copyright 2014 The Bazel Authors. All rights reserved.
	//
	// 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.google.devtools.common.options;

	import static com.google.common.truth.Truth.assertThat;
	import static java.util.Arrays.asList;
	import static org.junit.Assert.assertThrows;

	import com.google.common.testing.EqualsTester;
	import java.net.MalformedURLException;
	import java.net.URL;
	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.junit.runners.JUnit4;

	/**
	* Test for {@link Options}.
	*/
	@RunWith(JUnit4.class)
	public class OptionsTest {

	private static final String[] NO_ARGS = {};

	public static class HttpOptions extends OptionsBase {

	@Option(
	name = "host",
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "www.google.com",
	help = "The URL at which the server will be running."
	)
	public String host;

	@Option(
	name = "port",
	abbrev = 'p',
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "80",
	help = "The port at which the server will be running."
	)
	public int port;

	@Option(
	name = "debug",
	abbrev = 'd',
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "false",
	help = "debug"
	)
	public boolean isDebugging;

	@Option(
	name = "tristate",
	abbrev = 't',
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "auto",
	help = "tri-state option returning auto by default"
	)
	public TriState triState;

	@Option(
	name = "special",
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "null",
	expansion = {"--host=special.google.com", "--port=8080"}
	)
	public Void special;
	}

	@Test
	public void paragraphFill() throws Exception {
	// TODO(bazel-team): don't include trailing space after last word in line.
	String input = "The quick brown fox jumps over the lazy dog.";

	assertThat(OptionsUsage.paragraphFill(input, 2, 13))
	.isEqualTo(" The quick \n brown fox \n jumps over \n the lazy \n" + " dog.");
	assertThat(OptionsUsage.paragraphFill(input, 3, 19))
	.isEqualTo(" The quick brown \n fox jumps over \n the lazy dog.");

	String input2 = "The quick brown fox jumps\nAnother paragraph.";
	assertThat(OptionsUsage.paragraphFill(input2, 2, 23))
	.isEqualTo(" The quick brown fox \n jumps\n Another paragraph.");
	}

	@Test
	public void getsDefaults() throws OptionsParsingException {
	Options<HttpOptions> options = Options.parse(HttpOptions.class, NO_ARGS);
	String[] remainingArgs = options.getRemainingArgs();
	HttpOptions webFlags = options.getOptions();

	assertThat(webFlags.host).isEqualTo("www.google.com");
	assertThat(webFlags.port).isEqualTo(80);
	assertThat(webFlags.isDebugging).isFalse();
	assertThat(webFlags.triState).isEqualTo(TriState.AUTO);
	assertThat(remainingArgs).hasLength(0);
	}

	@Test
	public void objectMethods() throws OptionsParsingException {
	String[] args = { "--host", "foo", "--port", "80" };
	HttpOptions left =
	Options.parse(HttpOptions.class, args).getOptions();
	HttpOptions likeLeft =
	Options.parse(HttpOptions.class, args).getOptions();
	String [] rightArgs = {"--host", "other", "--port", "90" };
	HttpOptions right =
	Options.parse(HttpOptions.class, rightArgs).getOptions();

	String toString = left.toString();
	// Don't rely on Set.toString iteration order:
	assertThat(toString)
	.startsWith("com.google.devtools.common.options.OptionsTest" + "$HttpOptions{");
	assertThat(toString).contains("host=foo");
	assertThat(toString).contains("port=80");
	assertThat(toString).endsWith("}");

	new EqualsTester().addEqualityGroup(left).testEquals();
	assertThat(left.toString()).isEqualTo(likeLeft.toString());
	assertThat(left).isEqualTo(likeLeft);
	assertThat(likeLeft).isEqualTo(left);
	assertThat(left).isNotEqualTo(right);
	assertThat(right).isNotEqualTo(left);
	assertThat(left).isNotNull();
	assertThat(likeLeft).isNotNull();
	assertThat(likeLeft.hashCode()).isEqualTo(likeLeft.hashCode());
	assertThat(likeLeft.hashCode()).isEqualTo(left.hashCode());
	// Strictly speaking this is not required for hashCode to be correct,
	// but a good hashCode should be different at least for some values. So,
	// we're making sure that at least this particular pair of inputs yields
	// different values.
	assertThat(left.hashCode()).isNotEqualTo(right.hashCode());
	}

	@Test
	public void equals() throws OptionsParsingException {
	String[] args = { "--host", "foo", "--port", "80" };
	HttpOptions options1 = Options.parse(HttpOptions.class, args).getOptions();

	String[] args2 = { "-p", "80", "--host", "foo" };
	HttpOptions options2 = Options.parse(HttpOptions.class, args2).getOptions();
	// Order/abbreviations shouldn't matter.
	assertThat(options1).isEqualTo(options2);

	// Explicitly setting a default shouldn't matter.
	assertThat(Options.parse(HttpOptions.class, "--port", "80").getOptions())
	.isEqualTo(Options.parse(HttpOptions.class).getOptions());

	assertThat(Options.parse(HttpOptions.class, "--port", "3").getOptions())
	.isNotEqualTo(Options.parse(HttpOptions.class).getOptions());
	}

	@Test
	public void getsFlagsProvidedInArguments()
	throws OptionsParsingException {
	String[] args = {"--host", "google.com",
	"-p", "8080", // short form
	"--debug"};
	Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
	String[] remainingArgs = options.getRemainingArgs();
	HttpOptions webFlags = options.getOptions();

	assertThat(webFlags.host).isEqualTo("google.com");
	assertThat(webFlags.port).isEqualTo(8080);
	assertThat(webFlags.isDebugging).isTrue();
	assertThat(remainingArgs).hasLength(0);
	}

	@Test
	public void getsFlagsProvidedWithEquals() throws OptionsParsingException {
	String[] args = {"--host=google.com",
	"--port=8080",
	"--debug"};
	Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
	String[] remainingArgs = options.getRemainingArgs();
	HttpOptions webFlags = options.getOptions();

	assertThat(webFlags.host).isEqualTo("google.com");
	assertThat(webFlags.port).isEqualTo(8080);
	assertThat(webFlags.isDebugging).isTrue();
	assertThat(remainingArgs).hasLength(0);
	}

	@Test
	public void booleanNo() throws OptionsParsingException {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[]{"--nodebug", "--notristate"});
	HttpOptions webFlags = options.getOptions();
	assertThat(webFlags.isDebugging).isFalse();
	assertThat(webFlags.triState).isEqualTo(TriState.NO);
	}

	@Test
	public void booleanAbbrevMinus() throws OptionsParsingException {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[]{"-d-", "-t-"});
	HttpOptions webFlags = options.getOptions();
	assertThat(webFlags.isDebugging).isFalse();
	assertThat(webFlags.triState).isEqualTo(TriState.NO);
	}

	@Test
	public void boolean0() throws OptionsParsingException {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[]{"--debug=0", "--tristate=0"});
	HttpOptions webFlags = options.getOptions();
	assertThat(webFlags.isDebugging).isFalse();
	assertThat(webFlags.triState).isEqualTo(TriState.NO);
	}

	@Test
	public void boolean1() throws OptionsParsingException {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[]{"--debug=1", "--tristate=1"});
	HttpOptions webFlags = options.getOptions();
	assertThat(webFlags.isDebugging).isTrue();
	assertThat(webFlags.triState).isEqualTo(TriState.YES);
	}

	@Test
	public void retainsStuffThatsNotOptions() throws OptionsParsingException {
	String[] args = {"these", "aint", "options"};
	Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
	String[] remainingArgs = options.getRemainingArgs();
	assertThat(asList(remainingArgs)).isEqualTo(asList(args));
	}

	@Test
	public void retainsStuffThatsNotComplexOptions()
	throws OptionsParsingException {
	String[] args = {"--host", "google.com",
	"notta",
	"--port=8080",
	"option",
	"--debug=true"};
	String[] notoptions = {"notta", "option" };
	Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
	String[] remainingArgs = options.getRemainingArgs();
	assertThat(asList(remainingArgs)).isEqualTo(asList(notoptions));
	}

	@Test
	public void wontParseUnknownOptions() {
	String [] args = { "--unknown", "--other=23", "--options" };
	OptionsParsingException e =
	assertThrows(OptionsParsingException.class, () -> Options.parse(HttpOptions.class, args));
	assertThat(e).hasMessageThat().isEqualTo("Unrecognized option: --unknown");
	}

	@Test
	public void requiresOptionValue() {
	String[] args = {"--port"};
	OptionsParsingException e =
	assertThrows(OptionsParsingException.class, () -> Options.parse(HttpOptions.class, args));
	assertThat(e).hasMessageThat().isEqualTo("Expected value after --port");
	}

	@Test
	public void handlesDuplicateOptions_full() throws Exception {
	String[] args = {"--port=80", "--port", "81"};
	Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
	HttpOptions webFlags = options.getOptions();
	assertThat(webFlags.port).isEqualTo(81);
	}

	@Test
	public void handlesDuplicateOptions_abbrev() throws Exception {
	String[] args = {"--port=80", "-p", "81"};
	Options<HttpOptions> options = Options.parse(HttpOptions.class, args);
	HttpOptions webFlags = options.getOptions();
	assertThat(webFlags.port).isEqualTo(81);
	}

	@Test
	public void duplicateOptionsOkWithSameValues() throws Exception {
	// These would throw OptionsParsingException if they failed.
	Options.parse(HttpOptions.class,"--port=80", "--port", "80");
	Options.parse(HttpOptions.class, "--port=80", "-p", "80");
	}

	@Test
	public void isPickyAboutBooleanValues() {
	OptionsParsingException e =
	assertThrows(
	OptionsParsingException.class,
	() -> Options.parse(HttpOptions.class, new String[] {"--debug=not_a_boolean"}));
	assertThat(e)
	.hasMessageThat()
	.isEqualTo(
	"While parsing option --debug=not_a_boolean: " + "\'not_a_boolean\' is not a boolean");
	}

	@Test
	public void isPickyAboutBooleanNos() {
	OptionsParsingException e =
	assertThrows(
	OptionsParsingException.class,
	() -> Options.parse(HttpOptions.class, new String[] {"--nodebug=1"}));
	assertThat(e).hasMessageThat().isEqualTo("Unexpected value after boolean option: --nodebug=1");
	}

	@Test
	public void usageForBuiltinTypesNoExpansion() {
	String usage = Options.getUsage(HttpOptions.class);
	// We can't rely on the option ordering.
	assertThat(usage)
	.contains(" --[no]debug [-d] (a boolean; default: \"false\")\n" + " debug");
	assertThat(usage)
	.contains(
	" --host (a string; default: \"www.google.com\")\n"
	+ " The URL at which the server will be running.");
	assertThat(usage)
	.contains(
	" --port [-p] (an integer; default: \"80\")\n"
	+ " The port at which the server will be running.");
	assertThat(usage)
	.contains(
	" --[no]tristate [-t] (a tri-state (auto, yes, no); default: \"auto\")\n"
	+ " tri-state option returning auto by default");
	}

	@Test
	public void usageForStaticExpansion() {
	String usage = Options.getUsage(HttpOptions.class);
	assertThat(usage)
	.contains(" --special\n Expands to: --host=special.google.com --port=8080");
	}

	public static class NullTestOptions extends OptionsBase {
	@Option(
	name = "host",
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "null",
	help = "The URL at which the server will be running."
	)
	public String host;

	@Option(
	name = "none",
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "null",
	expansion = {"--host=www.google.com"},
	help = "An expanded option."
	)
	public Void none;
	}

	@Test
	public void usageForNullDefault() {
	String usage = Options.getUsage(NullTestOptions.class);
	assertThat(usage)
	.contains(
	" --host (a string; default: see description)\n"
	+ " The URL at which the server will be running.");
	assertThat(usage)
	.contains(
	" --none\n" + " An expanded option.\n" + " Expands to: --host=www.google.com");
	}

	public static class MyURLConverter implements Converter<URL> {

	@Override
	public URL convert(String input) throws OptionsParsingException {
	try {
	return new URL(input);
	} catch (MalformedURLException e) {
	throw new OptionsParsingException("Could not convert '" + input + "': "
	+ e.getMessage());
	}
	}

	@Override
	public String getTypeDescription() {
	return "a url";
	}

	}

	public static class UsesCustomConverter extends OptionsBase {

	@Option(
	name = "url",
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "http://www.google.com/",
	converter = MyURLConverter.class
	)
	public URL url;
	}

	@Test
	public void customConverter() throws Exception {
	Options<UsesCustomConverter> options =
	Options.parse(UsesCustomConverter.class, new String[0]);
	URL expected = new URL("http://www.google.com/");
	assertThat(options.getOptions().url).isEqualTo(expected);
	}

	@Test
	public void customConverterThrowsException() throws Exception {
	String[] args = {"--url=a_malformed:url"};
	OptionsParsingException e =
	assertThrows(
	OptionsParsingException.class, () -> Options.parse(UsesCustomConverter.class, args));
	assertThat(e)
	.hasMessageThat()
	.isEqualTo(
	"While parsing option --url=a_malformed:url: "
	+ "Could not convert 'a_malformed:url': "
	+ "no protocol: a_malformed:url");
	}

	@Test
	public void usageWithCustomConverter() {
	assertThat(Options.getUsage(UsesCustomConverter.class))
	.isEqualTo(" --url (a url; default: \"http://www.google.com/\")\n");
	}

	@Test
	public void unknownBooleanOption() {
	OptionsParsingException e =
	assertThrows(
	OptionsParsingException.class,
	() -> Options.parse(HttpOptions.class, new String[] {"--no-debug"}));
	assertThat(e).hasMessageThat().isEqualTo("Unrecognized option: --no-debug");
	}

	public static class J extends OptionsBase {
	@Option(
	name = "j",
	documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
	effectTags = {OptionEffectTag.NO_OP},
	defaultValue = "null"
	)
	public String string;
	}
	@Test
	public void nullDefaultForReferenceTypeOption() throws Exception {
	J options = Options.parse(J.class, NO_ARGS).getOptions();
	assertThat(options.string).isNull();
	}

	@Test
	public void nullIsNotInterpretedSpeciallyExceptAsADefaultValue() throws Exception {
	HttpOptions options =
	Options.parse(HttpOptions.class,
	new String[] { "--host", "null" }).getOptions();
	assertThat(options.host).isEqualTo("null");
	}

	@Test
	public void nonDecimalRadicesForIntegerOptions() throws Exception {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[] { "--port", "0x51"});
	assertThat(options.getOptions().port).isEqualTo(81);
	}

	@Test
	public void expansionOptionSimple() throws Exception {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[] {"--special"});
	assertThat(options.getOptions().host).isEqualTo("special.google.com");
	assertThat(options.getOptions().port).isEqualTo(8080);
	}

	@Test
	public void expansionOptionOverride() throws Exception {
	Options<HttpOptions> options =
	Options.parse(HttpOptions.class, new String[] {"--port=90", "--special", "--host=foo"});
	assertThat(options.getOptions().host).isEqualTo("foo");
	assertThat(options.getOptions().port).isEqualTo(8080);
	}

	@Test
	public void expansionOptionEquals() throws Exception {
	Options<HttpOptions> options1 =
	Options.parse(HttpOptions.class, new String[] { "--host=special.google.com", "--port=8080"});
	Options<HttpOptions> options2 =
	Options.parse(HttpOptions.class, new String[] { "--special" });
	assertThat(options1.getOptions()).isEqualTo(options2.getOptions());
	}
	}