public void testGetPackageName() throws Exception {
    assertEquals("java.lang", Reflection.getPackageName(Iterable.class));
    assertEquals("java", Reflection.getPackageName("java.MyType"));
    assertEquals("java.lang", Reflection.getPackageName(Iterable.class.getName()));
    assertEquals("", Reflection.getPackageName("NoPackage"));
    assertEquals("java.util", Reflection.getPackageName(Map.Entry.class));
  }

            assertEquals(4, bytesEncoded);

            ByteBuffer bb = ByteBuffer.wrap(dst).order(ByteOrder.LITTLE_ENDIAN);
            assertEquals(maxReferralLevel, bb.getShort());
            assertEquals(0, bb.getShort()); // null terminator
        }

        @ParameterizedTest
        @DisplayName("Should encode various referral levels correctly")

        when(mockTerminal.encoding()).thenReturn(StandardCharsets.UTF_8);

        assertEquals("✓", ConsoleIcon.SUCCESS.getIcon(mockTerminal));
        assertEquals("✗", ConsoleIcon.ERROR.getIcon(mockTerminal));
        assertEquals("⚠", ConsoleIcon.WARNING.getIcon(mockTerminal));
        assertEquals("•", ConsoleIcon.DETAIL.getIcon(mockTerminal));
        assertEquals("→", ConsoleIcon.ACTION.getIcon(mockTerminal));
    }

    @Test

        byte[] mac = PacMac.calculateMacArcfourHMACMD5(3, key, TEST_DATA);
        assertNotNull(mac);
        assertEquals(16, mac.length);

        // Test with a different key usage
        byte[] mac2 = PacMac.calculateMacArcfourHMACMD5(9, key, TEST_DATA);
        assertNotNull(mac2);
        assertEquals(16, mac2.length);

        // Test with another key usage

    assertEquals("", Files.getFileExtension("."));
    assertEquals("", Files.getFileExtension(".."));
    assertEquals("", Files.getFileExtension("..."));
    assertEquals("", Files.getFileExtension("blah"));
    assertEquals("", Files.getFileExtension("blah."));
    assertEquals("", Files.getFileExtension(".blah."));
    assertEquals("", Files.getFileExtension("/foo.bar/blah"));

    }

    @Test
    void writeRDataWireFormat_withDifferentOffsets_shouldAlwaysReturnZero() {
        // Arrange
        nodeStatusRequest = new NodeStatusRequest(mockConfig, mockName);
        byte[] dst = new byte[100];

        // Act & Assert
        assertEquals(0, nodeStatusRequest.writeRDataWireFormat(dst, 0));
        assertEquals(0, nodeStatusRequest.writeRDataWireFormat(dst, 50));

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

class ToolchainsBuildingExceptionTest {
    private static final String LS = System.lineSeparator();

    @Test
    void testNoProblems() {
        ToolchainsBuildingException e = new ToolchainsBuildingException(Collections.emptyList());
        assertEquals("0 problems were encountered while building the effective toolchains" + LS, e.getMessage());

            assertNotNull(result);
            assertEquals(600, result.getTtl());
            assertEquals(0, result.getFlags());
            assertEquals(expire, result.getExpiration());
            assertEquals("server.example.com", result.getServer());
            assertEquals("share", result.getShare());
            assertEquals("folder", result.getPath());
            assertEquals(consumed, result.getPathConsumed());
        }

    assertEquals(size - 2, tail.lastIndexOf(list.get(size - 1)));
    // The following assumes all elements are distinct.
    assertEquals(0, copy.lastIndexOf(list.get(0)));
    assertEquals(0, head.lastIndexOf(list.get(0)));
    assertEquals(0, tail.lastIndexOf(list.get(1)));
    assertEquals(-1, head.lastIndexOf(list.get(size - 1)));
    assertEquals(-1, tail.lastIndexOf(list.get(0)));
  }

    // Might be nice (eventually) to have:
    //     assertEquals(c1, c2);

    // But for now, settle for this:
    assertEquals(c1.hashCode(), c2.hashCode());

    assertEquals(c1.apply(1.0f), c2.apply(1.0f));
    assertEquals(c1.apply(5.0f), c2.apply(5.0f));
  }

  public void testComposeOfPredicateAndFunctionIsAssociative() {