Move bean definition counting only used in tests into test code

Closes gh-22105

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/BeanDefinitionLoader.java

@@ -120,51 +120,43 @@ class BeanDefinitionLoader {
 
 	/**
 	 * Load the sources into the reader.
-	 * @return the number of loaded beans
 	 */
-	int load() {
+	void load() {
-		int count = 0;
 		for (Object source : this.sources) {
-			count += load(source);
+			load(source);
 		}
-		return count;
 	}
 
-	private int load(Object source) {
+	private void load(Object source) {
 		Assert.notNull(source, "Source must not be null");
 		if (source instanceof Class<?>) {
-			return load((Class<?>) source);
+			load((Class<?>) source);
+			return;
 		}
 		if (source instanceof Resource) {
-			return load((Resource) source);
+			load((Resource) source);
+			return;
 		}
 		if (source instanceof Package) {
-			return load((Package) source);
+			load((Package) source);
+			return;
 		}
 		if (source instanceof CharSequence) {
-			return load((CharSequence) source);
+			load((CharSequence) source);
+			return;
 		}
 		throw new IllegalArgumentException("Invalid source type " + source.getClass());
 	}
 
-	private int load(Class<?> source) {
+	private void load(Class<?> source) {
 		if (isGroovyPresent() && GroovyBeanDefinitionSource.class.isAssignableFrom(source)) {
 			// Any GroovyLoaders added in beans{} DSL can contribute beans here
 			GroovyBeanDefinitionSource loader = BeanUtils.instantiateClass(source, GroovyBeanDefinitionSource.class);
-			load(loader);
+			((GroovyBeanDefinitionReader) this.groovyReader).beans(loader.getBeans());
 		}
 		if (isEligible(source)) {
 			this.annotatedReader.register(source);
-			return 1;
 		}
-		return 0;
-	}
-
-	private int load(GroovyBeanDefinitionSource source) {
-		int before = this.xmlReader.getRegistry().getBeanDefinitionCount();
-		((GroovyBeanDefinitionReader) this.groovyReader).beans(source.getBeans());
-		int after = this.xmlReader.getRegistry().getBeanDefinitionCount();
-		return after - before;
 	}
 
 	private int load(Resource source) {
@@ -181,36 +173,41 @@ class BeanDefinitionLoader {
 		return this.scanner.scan(source.getName());
 	}
 
-	private int load(CharSequence source) {
+	private void load(CharSequence source) {
 		String resolvedSource = this.xmlReader.getEnvironment().resolvePlaceholders(source.toString());
 		// Attempt as a Class
 		try {
-			return load(ClassUtils.forName(resolvedSource, null));
+			load(ClassUtils.forName(resolvedSource, null));
+			return;
 		}
 		catch (IllegalArgumentException | ClassNotFoundException ex) {
 			// swallow exception and continue
 		}
-		// Attempt as resources
+		// Attempt as Resources
-		Resource[] resources = findResources(resolvedSource);
+		if (loadAsResources(resolvedSource)) {
-		int loadCount = 0;
+			return;
-		boolean atLeastOneResourceExists = false;
-		for (Resource resource : resources) {
-			if (isLoadCandidate(resource)) {
-				atLeastOneResourceExists = true;
-				loadCount += load(resource);
-			}
-		}
-		if (atLeastOneResourceExists) {
-			return loadCount;
 		}
 		// Attempt as package
 		Package packageResource = findPackage(resolvedSource);
 		if (packageResource != null) {
-			return load(packageResource);
+			load(packageResource);
+			return;
 		}
 		throw new IllegalArgumentException("Invalid source '" + resolvedSource + "'");
 	}
 
+	private boolean loadAsResources(String resolvedSource) {
+		boolean foundCandidate = false;
+		Resource[] resources = findResources(resolvedSource);
+		for (Resource resource : resources) {
+			if (isLoadCandidate(resource)) {
+				foundCandidate = true;
+				load(resource);
+			}
+		}
+		return foundCandidate;
+	}
+
 	private boolean isGroovyPresent() {
 		return ClassUtils.isPresent("groovy.lang.MetaClass", null);
 	}

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/BeanDefinitionLoaderTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ class BeanDefinitionLoaderTests {
 	@Test
 	void loadClass() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, MyComponent.class);
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myComponent")).isTrue();
 	}
 
@@ -61,13 +61,13 @@ class BeanDefinitionLoaderTests {
 
 		};
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, myComponent.getClass());
-		assertThat(loader.load()).isEqualTo(0);
+		assertThat(load(loader)).isEqualTo(0);
 	}
 
 	@Test
 	void loadJsr330Class() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, MyNamedComponent.class);
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myNamedComponent")).isTrue();
 	}
 
@@ -75,7 +75,7 @@ class BeanDefinitionLoaderTests {
 	void loadXmlResource() {
 		ClassPathResource resource = new ClassPathResource("sample-beans.xml", getClass());
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, resource);
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myXmlComponent")).isTrue();
 
 	}
@@ -84,7 +84,7 @@ class BeanDefinitionLoaderTests {
 	void loadGroovyResource() {
 		ClassPathResource resource = new ClassPathResource("sample-beans.groovy", getClass());
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, resource);
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myGroovyComponent")).isTrue();
 
 	}
@@ -93,7 +93,7 @@ class BeanDefinitionLoaderTests {
 	void loadGroovyResourceWithNamespace() {
 		ClassPathResource resource = new ClassPathResource("sample-namespace.groovy", getClass());
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, resource);
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myGroovyComponent")).isTrue();
 
 	}
@@ -101,7 +101,7 @@ class BeanDefinitionLoaderTests {
 	@Test
 	void loadPackage() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, MyComponent.class.getPackage());
-		assertThat(loader.load()).isEqualTo(2);
+		assertThat(load(loader)).isEqualTo(2);
 		assertThat(this.registry.containsBean("myComponent")).isTrue();
 		assertThat(this.registry.containsBean("myNamedComponent")).isTrue();
 	}
@@ -109,7 +109,7 @@ class BeanDefinitionLoaderTests {
 	@Test
 	void loadClassName() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, MyComponent.class.getName());
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myComponent")).isTrue();
 	}
 
@@ -117,7 +117,7 @@ class BeanDefinitionLoaderTests {
 	void loadResourceName() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry,
 				"classpath:org/springframework/boot/sample-beans.xml");
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myXmlComponent")).isTrue();
 	}
 
@@ -125,14 +125,14 @@ class BeanDefinitionLoaderTests {
 	void loadGroovyName() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry,
 				"classpath:org/springframework/boot/sample-beans.groovy");
-		assertThat(loader.load()).isEqualTo(1);
+		assertThat(load(loader)).isEqualTo(1);
 		assertThat(this.registry.containsBean("myGroovyComponent")).isTrue();
 	}
 
 	@Test
 	void loadPackageName() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, MyComponent.class.getPackage().getName());
-		assertThat(loader.load()).isEqualTo(2);
+		assertThat(load(loader)).isEqualTo(2);
 		assertThat(this.registry.containsBean("myComponent")).isTrue();
 		assertThat(this.registry.containsBean("myNamedComponent")).isTrue();
 	}
@@ -142,7 +142,7 @@ class BeanDefinitionLoaderTests {
 		// See gh-6126
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry,
 				MyComponentInPackageWithoutDot.class.getPackage().getName());
-		int loaded = loader.load();
+		int loaded = load(loader);
 		assertThat(loaded).isEqualTo(1);
 		assertThat(this.registry.containsBean("myComponentInPackageWithoutDot")).isTrue();
 	}
@@ -151,9 +151,15 @@ class BeanDefinitionLoaderTests {
 	void loadPackageAndClassDoesNotDoubleAdd() {
 		BeanDefinitionLoader loader = new BeanDefinitionLoader(this.registry, MyComponent.class.getPackage(),
 				MyComponent.class);
-		assertThat(loader.load()).isEqualTo(2);
+		assertThat(load(loader)).isEqualTo(2);
 		assertThat(this.registry.containsBean("myComponent")).isTrue();
 		assertThat(this.registry.containsBean("myNamedComponent")).isTrue();
 	}
 
+	private int load(BeanDefinitionLoader loader) {
+		int beans = this.registry.getBeanDefinitionCount();
+		loader.load();
+		return this.registry.getBeanDefinitionCount() - beans;
+	}
+
 }