assertEquals(
        "put(present, value) should return the associated value",
        getValueForNullKey(),
        put(newEntry));

    Entry<K, V>[] expected = createArrayWithNullKey();
    expected[getNullLocation()] = newEntry;
    expectContents(expected);
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_KEYS)
  public void testPut_nullKeyUnsupported() {

		arn, err := ParseARN(testCase.s)
		expectErr := (err != nil)

		if expectErr != testCase.expectErr {
			t.Fatalf("test %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
		}

		if !testCase.expectErr {
			if *arn != *testCase.expectedARN {
				t.Fatalf("test %v: data: expected: %v, got: %v", i+1, testCase.expectedARN, arn)
			}
		}
	}

    Iterator<String> iterator = asList("one", "two").iterator();
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> getOnlyElement(iterator));
    assertThat(expected).hasMessageThat().isEqualTo("expected one element but was: <one, two>");
  }

  public void testGetOnlyElement_noDefault_fiveElements() {

	}

	for diskIndex, disk := range filteredDisks {
		if _, ok := diskFailures[diskIndex]; ok {
			if disk != nil {
				t.Errorf("Drive not filtered as expected, drive: %d", diskIndex)
			}
			if !partNeedsHealing(dataErrsPerDisk[diskIndex]) {
				t.Errorf("Disk expected to be healed, driveIndex: %d", diskIndex)
			}
		} else {
			if disk == nil {
				t.Errorf("Drive erroneously filtered, driveIndex: %d", diskIndex)
			}

    String msg =
        "Alphanumeric characters are always 'safe' " + "and should not be explicitly specified";
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> new PercentEscaper("-+#abc.!", false));
    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

  public void testBadArguments_plusforspace() {
    // space can be a safe char if plusForSpace is false

    Iterator<String> iterator = asList("one", "two").iterator();
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> getOnlyElement(iterator));
    assertThat(expected).hasMessageThat().isEqualTo("expected one element but was: <one, two>");
  }

  public void testGetOnlyElement_noDefault_fiveElements() {

      assertTrue(hp.hasPort());
      assertEquals(expectPort, hp.getPort());
    } else {
      assertFalse(hp.hasPort());
      try {
        hp.getPort();
        fail("Expected IllegalStateException");
      } catch (IllegalStateException expected) {
      }
    }
    assertEquals(expectHost, hp.getHost());

    // Check the post-withDefaultPort() instance (if any).
    if (!badDefaultPort) {
      try {

          call.executeAsync().use {
            withContext(Dispatchers.IO) {
              it.body.string()
            }
            fail("No expected to get response")
          }
        }
      } catch (to: TimeoutCancellationException) {
        // expected
      }

      assertThat(call.isCanceled()).isTrue()
    }
  }

  @Test
  fun cancelledCall() {
    runTest {

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment (please complete the following information):**
 - OS: [e.g. Windows 10]

			if err != nil && test.success {
				t.Errorf("Expected success, saw failure %v", err)
			}
			if err == nil && !test.success {
				t.Error("Expected failure, saw success")
			}
			if test.success {
				if !bytes.Equal(ddata, data) {
					t.Errorf("Expected %s, got %s", string(data), string(ddata))
				}
			}
		})
	}