Add integration tests for context failure threshold support

See gh-14182

spring-test/src/test/java/org/springframework/test/context/cache/ContextFailureThresholdTests.java

@@ -16,30 +16,126 @@
 
 package org.springframework.test.context.cache;
 
+import java.util.concurrent.atomic.AtomicInteger;
+
 import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
-import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestMethodOrder;
+import org.junit.platform.testkit.engine.EngineTestKit;
 
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.SpringProperties;
+import org.springframework.test.context.TestExecutionListeners;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;
+import org.springframework.test.context.support.DependencyInjectionTestExecutionListener;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
+import static org.springframework.test.context.CacheAwareContextLoaderDelegate.CONTEXT_FAILURE_THRESHOLD_PROPERTY_NAME;
+import static org.springframework.test.context.CacheAwareContextLoaderDelegate.DEFAULT_CONTEXT_FAILURE_THRESHOLD;
 import static org.springframework.test.context.cache.ContextCacheTestUtils.assertContextCacheStatistics;
 import static org.springframework.test.context.cache.ContextCacheTestUtils.resetContextCache;
 
 /**
+ * Integration tests for context failure threshold support.
+ *
  * @author Sam Brannen
  * @since 6.1
  */
-@SpringJUnitConfig
-@TestMethodOrder(OrderAnnotation.class)
-@Disabled
 class ContextFailureThresholdTests {
 
+	private static final AtomicInteger loadCount = new AtomicInteger(0);
+
+
+	@BeforeEach
+	@AfterEach
+	void resetFlag() {
+		loadCount.set(0);
+		SpringProperties.setProperty(CONTEXT_FAILURE_THRESHOLD_PROPERTY_NAME, null);
+	}
+
+	@Test
+	void defaultThreshold() {
+		assertThat(loadCount.get()).isZero();
+
+		EngineTestKit.engine("junit-jupiter")//
+				.selectors(selectClass(PassingTestCase.class))// 2 passing
+				.selectors(selectClass(FailingTestCase.class))// 3 failing
+				.execute()//
+				.testEvents()//
+				.assertStatistics(stats -> stats.started(5).succeeded(2).failed(3));
+		assertThat(loadCount.get()).isEqualTo(DEFAULT_CONTEXT_FAILURE_THRESHOLD);
+	}
+
+	@Test
+	void customThreshold() {
+		assertThat(loadCount.get()).isZero();
+
+		int threshold = 2;
+		SpringProperties.setProperty(CONTEXT_FAILURE_THRESHOLD_PROPERTY_NAME, Integer.toString(threshold));
+
+		EngineTestKit.engine("junit-jupiter")//
+				.selectors(selectClass(PassingTestCase.class))// 2 passing
+				.selectors(selectClass(FailingTestCase.class))// 3 failing
+				.execute()//
+				.testEvents()//
+				.assertStatistics(stats -> stats.started(5).succeeded(2).failed(3));
+		assertThat(loadCount.get()).isEqualTo(threshold);
+	}
+
+	@Test
+	void thresholdEffectivelyDisabled() {
+		assertThat(loadCount.get()).isZero();
+
+		SpringProperties.setProperty(CONTEXT_FAILURE_THRESHOLD_PROPERTY_NAME, "999999");
+
+		EngineTestKit.engine("junit-jupiter")//
+				.selectors(selectClass(PassingTestCase.class))// 2 passing
+				.selectors(selectClass(FailingTestCase.class))// 3 failing
+				.execute()//
+				.testEvents()//
+				.assertStatistics(stats -> stats.started(5).succeeded(2).failed(3));
+		assertThat(loadCount.get()).isEqualTo(3);
+	}
+
+
+	@SpringJUnitConfig
+	@TestExecutionListeners(DependencyInjectionTestExecutionListener.class)
+	static class PassingTestCase {
+
+		@BeforeAll
+		static void verifyInitialCacheState() {
+			resetContextCache();
+			assertContextCacheStatistics("BeforeAll", 0, 0, 0);
+		}
+
+		@AfterAll
+		static void verifyFinalCacheState() {
+			assertContextCacheStatistics("AfterAll", 1, 1, 1);
+			resetContextCache();
+		}
+
+		@Test
+		void test1() {}
+
+		@Test
+		void test2() {}
+
+		@Configuration
+		static class PassingConfig {
+		}
+	}
+
+	@SpringJUnitConfig
+	@TestExecutionListeners(DependencyInjectionTestExecutionListener.class)
+	@TestMethodOrder(OrderAnnotation.class)
+	static class FailingTestCase {
+
 		@BeforeAll
 		static void verifyInitialCacheState() {
 			resetContextCache();
@@ -53,28 +149,26 @@ class ContextFailureThresholdTests {
 		}
 
 		@Test
-	@Order(1)
+		void test1() {}
-	void test1() {
-	}
 
 		@Test
-	@Order(2)
+		void test2() {}
-	void test2() {
-	}
 
 		@Test
-	@Order(3)
+		void test3() {}
-	void test3() {
-	}
-
 
 		@Configuration
 		static class FailingConfig {
 
+			FailingConfig() {
+				loadCount.incrementAndGet();
+			}
+
 			@Bean
 			String explosiveString() {
 				throw new RuntimeException("Boom!");
 			}
 		}
+	}
 
 }