throw new AssertionError(
          "expected to throw " + expectedThrowable.getSimpleName() + " but threw " + t, t);
    }
    if (userPassedSupplier) {
      throw new AssertionError(
          "expected to throw "
              + expectedThrowable.getSimpleName()
              + " but returned result: "
              + result);
    } else {
      throw new AssertionError("expected to throw " + expectedThrowable.getSimpleName());

     * @param fileAttributes The attributes of the mock file.
     * @param expectedResult The expected outcome of the accept method.
     * @throws SmbException If an SMB error occurs.
     */
    @ParameterizedTest(name = "Filter: {0}, File: {1}, Expected: {2}")
    @CsvSource({
            // Positive cases (should be accepted)
            "1, 1, true", // ATTR_READONLY

        String expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);

        data = "<meta property=\"og:image\" content=\"://example/foo.jpg\" />";
        expected = "http://example/foo.jpg";
        assertGetThumbnailUrl(data, expected);

        data = "<meta property=\"og:image\" content=\"http://example/foo.jpg\" />";
        expected = "http://example/foo.jpg";

    }

    private void assertQueryBuilder(final String expect, final String text) throws Exception {
        QueryContext queryContext = assertQueryBuilder(null, null, text);
        List<SortBuilder<?>> sortBuilders = queryContext.sortBuilders();
        assertEquals(1, sortBuilders.size());
        logger.info("{} => {}", text, sortBuilders.get(0).toString());
        assertEquals(expect, sortBuilders.get(0).toString().replaceAll("[\s\n]", ""));

In this case, you could want to document how that external API *should* look like. What *path operation* it should have, what body it should expect, what response it should return, etc.

## An app with callbacks { #an-app-with-callbacks }

Let's see all this with an example.

Imagine you develop an app that allows creating invoices.

template time video",version:m,shivCSS:n.shivCSS!==!1,supportsUnknownElements:l,shivMethods:n.shivMethods!==!1,type:"default",shivDocument:j,createElement:g,createDocumentFragment:h,addElements:e};a.html5=t,j(b),"object"==typeof module&&module.exports&&(module.exports=t)}("undefined"!=typeof window?window:this,document);...

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"runtime"
	"testing"
	"time"
)

// WARNING:
//
// Expected source line number is hard coded, 35, in the
// following test. Adding new code before this test or changing its
// position will cause the line number to change and the test to FAIL
// Tests getSource().

            try {
                circuitBreaker.call(() -> {
                    throw new RuntimeException("Test failure");
                });
            } catch (Exception e) {
                // Expected
            }
        }

        assertEquals(SimpleCircuitBreaker.State.OPEN, circuitBreaker.getState());
        assertFalse(circuitBreaker.allowsRequests());

  }

  /**
   * Verify that the listener completes in a reasonable amount of time, and Asserts that the future
   * returns the expected data.
   *
   * @throws Throwable if the listener isn't called or if it resulted in a throwable or if the
   *     result doesn't match the expected value.
   */
  public void assertSuccess(Object expectedData) throws Throwable {

        int paramBytes = transaction.writeParametersWireFormat(buffer, 0);
        assertEquals(20, paramBytes, "writeParametersWireFormat should return expected bytes");

        int dataBytes = transaction.writeDataWireFormat(buffer, 0);
        assertEquals(50, dataBytes, "writeDataWireFormat should return expected bytes");
    }

    @Test