/*
    * Copyright (C) 2018, Google LLC. and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    */
  package org.eclipse.jgit.internal.transport.parser;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import java.util.Arrays;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  import org.eclipse.jgit.errors.PackProtocolException;
  import org.junit.Test;
  
  public class FirstWantTest {
  
  	@Test
  	public void testFirstWantWithOptions() throws PackProtocolException {
  		String line = "want b9d4d1eb2f93058814480eae9e1b67550f46ee38 "
  				+ "no-progress include-tag ofs-delta agent=JGit/unknown";
  
  		FirstWant r = FirstWant.fromLine(line);
  		assertEquals("want b9d4d1eb2f93058814480eae9e1b67550f46ee38",
  				r.getLine());
  		Set<String> capabilities = r.getCapabilities();
  		Set<String> expectedCapabilities = new HashSet<>(
  				Arrays.asList("no-progress", "include-tag", "ofs-delta"));
  		assertEquals(expectedCapabilities, capabilities);
  		assertEquals("JGit/unknown", r.getAgent());
  	}
  
  	@Test
  	public void testFirstWantWithoutOptions() throws PackProtocolException {
  		String line = "want b9d4d1eb2f93058814480eae9e1b67550f46ee38";
  
  		FirstWant r = FirstWant.fromLine(line);
  		assertEquals("want b9d4d1eb2f93058814480eae9e1b67550f46ee38",
  				r.getLine());
  		assertTrue(r.getCapabilities().isEmpty());
  		assertNull(r.getAgent());
  	}
  
  	private String makeFirstWantLine(String capability) {
  		return String.format("want b9d4d1eb2f93058814480eae9e1b67550f46ee38 %s", capability);
  	}
  
  	@Test
  	public void testFirstWantNoWhitespace() {
  		try {
  			FirstWant.fromLine(
  					"want b9d4d1eb2f93058814480eae9e1b67550f400000capability");
  			fail("Accepting first want line without SP between oid and first capability");
  		} catch (PackProtocolException e) {
  			// pass
  		}
  	}
  
  	@Test
  	public void testFirstWantOnlyWhitespace() throws PackProtocolException {
  		FirstWant r = FirstWant
  				.fromLine("want b9d4d1eb2f93058814480eae9e1b67550f46ee38 ");
  		assertEquals("want b9d4d1eb2f93058814480eae9e1b67550f46ee38",
  				r.getLine());
  	}
  
  	@Test
  	public void testFirstWantValidCapabilityNames()
  			throws PackProtocolException {
  		List<String> validNames = Arrays.asList(
  				"c", "cap", "C", "CAP", "1", "1cap", "cap-64k_test",
  				"-", "-cap",
  				"_", "_cap");
  
  		for (String capability: validNames) {
  			FirstWant r = FirstWant.fromLine(makeFirstWantLine(capability));
  			assertEquals(r.getCapabilities().size(), 1);
  			assertTrue(r.getCapabilities().contains(capability));
  		}
  	}
  
  	@Test
  	public void testFirstWantValidAgentName() throws PackProtocolException {
  		FirstWant r = FirstWant.fromLine(makeFirstWantLine("agent=pack.age/Version"));
  		assertEquals(r.getCapabilities().size(), 0);
  		assertEquals("pack.age/Version", r.getAgent());
  	}
  }