UnboundConfigurationPropertyFailureAnalyzerTests Class — spring-boot Architecture

Source Code

core/spring-boot/src/test/java/org/springframework/boot/diagnostics/analyzer/UnboundConfigurationPropertyFailureAnalyzerTests.java lines 45–124

class UnboundConfigurationPropertyFailureAnalyzerTests {

	@BeforeEach
	void setup() {
		LocaleContextHolder.setLocale(Locale.US);
	}

	@AfterEach
	void cleanup() {
		LocaleContextHolder.resetLocaleContext();
	}

	@Test
	void bindExceptionDueToUnboundElements() {
		FailureAnalysis analysis = performAnalysis(UnboundElementsFailureConfiguration.class,
				"test.foo.listValue[0]=hello", "test.foo.listValue[2]=world");
		assertThat(analysis.getDescription()).contains(
				failure("test.foo.listvalue[2]", "world", "\"test.foo.listValue[2]\" from property source \"test\"",
						"The elements [test.foo.listvalue[2]] were left unbound."));
	}

	private static String failure(String property, String value, String origin, String reason) {
		return String.format("Property: %s%n    Value: \"%s\"%n    Origin: %s%n    Reason: %s", property, value, origin,
				reason);
	}

	private FailureAnalysis performAnalysis(Class<?> configuration, String... environment) {
		BeanCreationException failure = createFailure(configuration, environment);
		FailureAnalysis analyze = new UnboundConfigurationPropertyFailureAnalyzer().analyze(failure);
		assertThat(analyze).isNotNull();
		return analyze;
	}

	private BeanCreationException createFailure(Class<?> configuration, String... environment) {
		try {
			AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
			addEnvironment(context, environment);
			context.register(configuration);
			context.refresh();
			context.close();
			throw new AssertionError("Should not be reached");
		}
		catch (BeanCreationException ex) {
			return ex;
		}
	}

	private void addEnvironment(AnnotationConfigApplicationContext context, String[] environment) {
		MutablePropertySources sources = context.getEnvironment().getPropertySources();
		Map<String, Object> map = new HashMap<>();
		for (String pair : environment) {
			int index = pair.indexOf('=');
			String key = (index > 0) ? pair.substring(0, index) : pair;
			String value = (index > 0) ? pair.substring(index + 1) : "";
			map.put(key.trim(), value.trim());
		}
		sources.addFirst(new MapPropertySource("test", map));
	}

	@EnableConfigurationProperties(UnboundElementsFailureProperties.class)
	static class UnboundElementsFailureConfiguration {

	}

	@ConfigurationProperties("test.foo")
	static class UnboundElementsFailureProperties {

		private @Nullable List<String> listValue;

		@Nullable List<String> getListValue() {
			return this.listValue;
		}

		void setListValue(@Nullable List<String> listValue) {
			this.listValue = listValue;
		}

	}

}