writer.close();

    assertTrue(sink.wasStreamClosed());
    assertEquals(STRING, sink.getString());
  }

  public void testWrite_string() throws IOException {
    assertEquals("", sink.getString());
    sink.write(STRING);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertEquals(STRING, sink.getString());
  }

  public void testWriteFrom_reader() throws IOException {

     * @throws RuntimeException If failed (and not due source not exists).
     */
    @Nonnull
    default Optional<String> getString(@Nonnull URI relativeSource) {
        return getString(relativeSource, StandardCharsets.UTF_8);
    }

    /**
     * PUTs the source file (must exist as file) to target URI. The target MUST BE relative from the

  private final TestByteSink byteSink;

  public TestCharSink(TestOption... options) {
    this.byteSink = new TestByteSink(options);
  }

  public String getString() {
    return new String(byteSink.getBytes(), UTF_8);
  }

  @Override
  public boolean wasStreamOpened() {
    return byteSink.wasStreamOpened();
  }

  @Override
  public boolean wasStreamClosed() {

    }

    private List<String> parsePluginExcludes(RepositorySystemSession session) {
        String excludes = ConfigUtils.getString(session, null, Constants.MAVEN_PLUGIN_VALIDATION_EXCLUDES);
        if (excludes == null || excludes.isEmpty()) {
            return Collections.emptyList();
        }
        return Arrays.stream(excludes.split(","))

  }

  public void testCopyTo_charSink() throws IOException {
    TestCharSink sink = new TestCharSink();

    assertEquals(expected.length(), source.copyTo(sink));

    assertExpectedString(sink.getString());
  }

  public void testRead_toString() throws IOException {
    String string = source.read();
    assertExpectedString(string);
  }

  public void testReadFirstLine() throws IOException {

            String userAgent = ConfigUtils.getString(
                    legacySupport.getRepositorySession(), null, ConfigurationProperties.USER_AGENT);

            if (userAgent == null) {
                Properties headers = new Properties();

                headers.put(
                        "User-Agent",
                        ConfigUtils.getString(

    assertEquals(STRING.length(), source.copyTo(sink));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());

    assertEquals(STRING, sink.getString());
  }

  public void testRead_toString() throws IOException {
    assertEquals(STRING, source.read());
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

                result.addVersion(lowerBound.getVersion());
            } else {
                Metadata.Nature wantedNature;
                String natureString = ConfigUtils.getString(
                        session, request.getNature().name(), Constants.MAVEN_VERSION_RANGE_RESOLVER_NATURE_OVERRIDE);
                if ("auto".equals(natureString)) {

    assertEquals(STRING.length(), source.copyTo(sink));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());

    assertEquals(STRING, sink.getString());
  }

  public void testRead_toString() throws IOException {
    assertEquals(STRING, source.read());
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

// HTTPS - returns true if secure for URLEndpointType.
func (endpoints Endpoints) HTTPS() bool {
	return endpoints[0].HTTPS()
}

// GetString - returns endpoint string of i-th endpoint (0-based),
// and empty string for invalid indexes.
func (endpoints Endpoints) GetString(i int) string {
	if i < 0 || i >= len(endpoints) {
		return ""
	}
	return endpoints[i].String()
}