junit-team/junit5 · error · JUnitException

Failed to read contents of ${reference}.

Error message

Failed to read contents of ${reference}.

What it means

Error "Failed to read contents of ${reference}." thrown in junit-team/junit5.

Source

Thrown at junit-platform-commons/src/main/java/org/junit/platform/commons/util/ModuleUtils.java:269

		 * Scan module reference for classes that potentially contain testable methods.
		 */
		List<Class<?>> scan(ModuleReference reference) {
			try (ModuleReader reader = reference.open()) {
				try (Stream<String> names = reader.list()) {
					// @formatter:off
					return names.filter(name -> !name.endsWith("/")) // remove directories
							.map(Path::of)
							.filter(SearchPathUtils::isClassOrSourceFile)
							.map(SearchPathUtils::determineFullyQualifiedClassName)
							.filter(classFilter::match)
							.<Class<?>> map(this::loadClassUnchecked)
							.filter(classFilter::match)
							.toList();
					// @formatter:on
				}
			}
			catch (IOException e) {
				throw new JUnitException("Failed to read contents of " + reference + ".", e);
			}
		}

		/**
		 * Load class by its binary name.
		 *
		 * @see ClassLoader#loadClass(String)
		 */
		private Class<?> loadClassUnchecked(String binaryName) {
			try {
				return classLoader.loadClass(binaryName);
			}
			catch (ClassNotFoundException e) {
				throw new JUnitException("Failed to load class with name '" + binaryName + "'.", e);
			}
		}

	}

View on GitHub (pinned to 956246301e)

When it happens

Trigger: Thrown at junit-platform-commons/src/main/java/org/junit/platform/commons/util/ModuleUtils.java:269 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of junit-team/junit5@956246301e (2026-08-04). Data as JSON: /data/errors/176a62bc970b5573.json. Report an issue: GitHub.