Your code needs to run on [all versions of Java that Gradle supports](platforms/documentation/docs/src/docs/userguide/releases/compatibility.adoc) and across all supported operating systems (macOS, Windows, Linux). The Gradle CI system will verify this, but here are some pointers that will avoid surprises:

* Be careful when using features introduced in Java 9 or later. Some parts of Gradle still need to run on Java 8.

            final long elapsed = System.currentTimeMillis() - startTime;

            assertNotNull(results);
            // Verify it doesn't take too long (parallel execution should help)
            assertTrue("Search took too long: " + elapsed + "ms", elapsed < 5000);
        }
    }

    /**

                tmpTestFiles.keys
            )
            cleanUp(tmpTestFiles.keys)
            projectPathToLeftoverFiles[projectPath] = tmpTestFiles
        }

        // Third run: verify and throw exceptions
        val exceptions = mutableListOf<Exception>()
        projectStates
            .filter { projectPathToLeftoverFiles.containsKey(it.key) }

		if err != nil {
			writeCustomErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrInternalError), err.Error(), r.URL)
			return
		}
		writeSuccessResponseJSON(w, resp)
		return
	}

	// 2. Verify that we can indeed decrypt the (encrypted) key
	decryptedKey, err := GlobalKMS.Decrypt(ctx, &kms.DecryptRequest{
		Name:           key.KeyID,
		Ciphertext:     key.Ciphertext,
		AssociatedData: kmsContext,
	})

Output decrypted to inspect.ad2b43d8.zip
```

        FuzzyQuery fuzzyQuery = new FuzzyQuery(term);

        QueryBuilder result = fuzzyQueryCommand.convertFuzzyQuery(context, fuzzyQuery, 1.0f);
        assertNotNull(result);

        // Verify that the query was processed successfully
        assertTrue(result instanceof FuzzyQueryBuilder);
        FuzzyQueryBuilder fqb = (FuzzyQueryBuilder) result;
        assertEquals("title", fqb.fieldName());

    AccessibleObject.setAccessible(methods, true);
    for (Method method : methods) {
      // Interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for Android compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }
      // The interface could be package-private or private.

    * Add `-prof async` to see hotspots.
* Have your benchmarks peer-reviewed.

### Don't

* Blindly believe the numbers that your microbenchmark produces but verify them by measuring e.g. with `-prof perfasm`.
* Run more threads than your number of CPU cores (in case you run multi-threaded microbenchmarks).

    public void testGzipSetsCompressionToGzip() {
        CurlRequest request = new CurlRequest(Method.GET, "https://example.com");

        // Call gzip() and verify it sets compression
        request.gzip();

        // We can't directly access compression field, but we can verify the method returns this
        assertSame(request, request.gzip());
    }

    @Test
    public void testMultipleCompressionCalls() {

    AccessibleObject.setAccessible(methods, true);
    for (Method method : methods) {
      // Interfaces can have default methods that aren't abstract.
      // No need to verify them.
      // Can't check isDefault() for Android compatibility.
      if (!Modifier.isAbstract(method.getModifiers())) {
        continue;
      }
      // The interface could be package-private or private.