#### Key rotation

S3 clients can change the client-provided key of an existing object. Therefore an S3 client must perform a S3 COPY operation where the copy source and destination are equal. Further the COPY request headers must contain the current and the new client key:

                Set.of("QUERY1"), //
                buildQuery("QUERY1^10"));

        assertQueryContext(

 *     MultimapBuilder.treeKeys().treeSetValues(this::compareMethods).build();
 * }
 *
 * <p>{@code MultimapBuilder} instances are immutable. Invoking a configuration method has no effect
 * on the receiving instance; you must store and use the new builder instance it returns instead.
 *
 * <p>The generated multimaps are serializable if the key and value types are serializable, unless
 * stated otherwise in one of the configuration methods.
 *

 *     MultimapBuilder.treeKeys().treeSetValues(this::compareMethods).build();
 * }
 *
 * <p>{@code MultimapBuilder} instances are immutable. Invoking a configuration method has no effect
 * on the receiving instance; you must store and use the new builder instance it returns instead.
 *
 * <p>The generated multimaps are serializable if the key and value types are serializable, unless
 * stated otherwise in one of the configuration methods.
 *

 * see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Jared Levy
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

    @Test
    void testFileSource() {
        NullPointerException e = assertThrows(
                NullPointerException.class,
                () -> new FileSource((File) null),
                "Should fail, since you must specify a file");
        assertEquals("file cannot be null", e.getMessage());
    }

    @Test
    void testGetInputStream() throws Exception {
        File txtFile = new File("target/test-classes/source.txt");

     * Sets the logging level.
     *
     * @param level the logging level to set
     */
    public static void setLevel(final int level) {
        LogStream.level = level;
    }

    /**
     * This must be called before <code>getInstance</code> is called or
     * it will have no effect.
     *
     * @param stream the PrintStream to use for logging
     */
    public static void setInstance(final PrintStream stream) {

    int GENERIC_WRITE = 0x40000000; // 30
    /** Generic read access right */
    int GENERIC_READ = 0x80000000; // 31

    // flags for move and copy
    /** Target must be file flag */
    int FLAGS_TARGET_MUST_BE_FILE = 0x0001;
    /** Target must be directory flag */
    int FLAGS_TARGET_MUST_BE_DIRECTORY = 0x0002;
    /** Copy target mode ASCII flag */
    int FLAGS_COPY_TARGET_MODE_ASCII = 0x0004;

    // This is a bit of a hack but lets us do quicker per-character checks in
    // the fast path code. The safe min/max values are very unlikely to extend
    // into the range of surrogate characters, but if they do we must not test
    // any values in that range. To see why, consider the case where:
    // safeMin <= {hi,lo} <= safeMax
    // where {hi,lo} are characters forming a surrogate pair such that:
    // codePointOf(hi, lo) > safeMax