Merge branch '3.1.x'

Closes gh-37925

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/context/ImportsContextCustomizer.java

@@ -16,8 +16,10 @@
 
 package org.springframework.boot.test.context;
 
+import java.lang.annotation.Annotation;
 import java.lang.reflect.Constructor;
 import java.util.Collections;
+import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.Set;
 import java.util.stream.Collectors;
@@ -34,6 +36,7 @@ import org.springframework.boot.context.annotation.DeterminableImports;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.AnnotatedBeanDefinitionReader;
+import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
@@ -232,7 +235,19 @@ class ImportsContextCustomizer implements ContextCustomizer {
 				.withAnnotationFilter(this::isFilteredAnnotation)
 				.from(testClass);
 			Set<Object> determinedImports = determineImports(annotations, testClass);
-			this.key = (determinedImports != null) ? determinedImports : synthesize(annotations);
+			if (determinedImports == null) {
+				this.key = Collections.unmodifiableSet(synthesize(annotations));
+			}
+			else {
+				Set<Object> key = new HashSet<>();
+				key.addAll(determinedImports);
+				Set<Annotation> componentScanning = annotations.stream()
+					.filter((annotation) -> annotation.getType().equals(ComponentScan.class))
+					.map(MergedAnnotation::synthesize)
+					.collect(Collectors.toSet());
+				key.addAll(componentScanning);
+				this.key = Collections.unmodifiableSet(key);
+			}
 		}
 
 		private boolean isFilteredAnnotation(String typeName) {

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/context/ImportsContextCustomizerFactoryTests.java

@@ -23,6 +23,7 @@ import org.junit.jupiter.api.Test;
 
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 import org.springframework.stereotype.Component;
@@ -74,6 +75,20 @@ class ImportsContextCustomizerFactoryTests {
 		assertThat(customizer3).isEqualTo(customizer4);
 	}
 
+	@Test
+	void contextCustomizerEqualsAndHashCodeConsidersComponentScan() {
+		ContextCustomizer customizer1 = this.factory
+			.createContextCustomizer(TestWithImportAndComponentScanOfSomePackage.class, null);
+		ContextCustomizer customizer2 = this.factory
+			.createContextCustomizer(TestWithImportAndComponentScanOfSomePackage.class, null);
+		ContextCustomizer customizer3 = this.factory
+			.createContextCustomizer(TestWithImportAndComponentScanOfAnotherPackage.class, null);
+		assertThat(customizer1.hashCode()).isEqualTo(customizer2.hashCode());
+		assertThat(customizer1).isEqualTo(customizer2);
+		assertThat(customizer3.hashCode()).isNotEqualTo(customizer2.hashCode()).isNotEqualTo(customizer1.hashCode());
+		assertThat(customizer3).isNotEqualTo(customizer2).isNotEqualTo(customizer1);
+	}
+
 	@Test
 	void getContextCustomizerWhenClassHasBeanMethodsShouldThrowException() {
 		assertThatIllegalStateException()
@@ -105,6 +120,18 @@ class ImportsContextCustomizerFactoryTests {
 
 	}
 
+	@Import(ImportedBean.class)
+	@ComponentScan("some.package")
+	static class TestWithImportAndComponentScanOfSomePackage {
+
+	}
+
+	@Import(ImportedBean.class)
+	@ComponentScan("another.package")
+	static class TestWithImportAndComponentScanOfAnotherPackage {
+
+	}
+
 	@MetaImport
 	static class TestWithMetaImport {