Polish ControlFlowPointcut[Tests]

spring-aop/src/main/java/org/springframework/aop/support/ControlFlowPointcut.java

@@ -28,8 +28,9 @@ import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
 /**
- * Pointcut and method matcher for use in simple <b>cflow</b>-style pointcut.
- * Note that evaluating such pointcuts is 10-15 times slower than evaluating
+ * Pointcut and method matcher for use as a simple <b>cflow</b>-style pointcut.
+ *
+ * <p>Note that evaluating such pointcuts is 10-15 times slower than evaluating
  * normal pointcuts, but they are useful in some cases.
  *
  * @author Rod Johnson
@@ -45,12 +46,12 @@ public class ControlFlowPointcut implements Pointcut, ClassFilter, MethodMatcher
 	@Nullable
 	private final String methodName;
 
-	private final AtomicInteger evaluations = new AtomicInteger();
+	private final AtomicInteger evaluationCount = new AtomicInteger();
 
 
 	/**
-	 * Construct a new pointcut that matches all control flows below that class.
-	 * @param clazz the clazz
+	 * Construct a new pointcut that matches all control flows below the given class.
+	 * @param clazz the class
 	 */
 	public ControlFlowPointcut(Class<?> clazz) {
 		this(clazz, null);
@@ -58,9 +59,10 @@ public class ControlFlowPointcut implements Pointcut, ClassFilter, MethodMatcher
 
 	/**
 	 * Construct a new pointcut that matches all calls below the given method
-	 * in the given class. If no method name is given, matches all control flows
+	 * in the given class.
+	 * <p>If no method name is given, the pointcut matches all control flows
 	 * below the given class.
-	 * @param clazz the clazz
+	 * @param clazz the class
 	 * @param methodName the name of the method (may be {@code null})
 	 */
 	public ControlFlowPointcut(Class<?> clazz, @Nullable String methodName) {
@@ -72,6 +74,7 @@ public class ControlFlowPointcut implements Pointcut, ClassFilter, MethodMatcher
 
 	/**
 	 * Subclasses can override this for greater filtering (and performance).
+	 * <p>The default implementation always returns {@code true}.
 	 */
 	@Override
 	public boolean matches(Class<?> clazz) {
@@ -80,6 +83,7 @@ public class ControlFlowPointcut implements Pointcut, ClassFilter, MethodMatcher
 
 	/**
 	 * Subclasses can override this if it's possible to filter out some candidate classes.
+	 * <p>The default implementation always returns {@code true}.
 	 */
 	@Override
 	public boolean matches(Method method, Class<?> targetClass) {
@@ -93,7 +97,7 @@ public class ControlFlowPointcut implements Pointcut, ClassFilter, MethodMatcher
 
 	@Override
 	public boolean matches(Method method, Class<?> targetClass, Object... args) {
-		this.evaluations.incrementAndGet();
+		this.evaluationCount.incrementAndGet();
 
 		for (StackTraceElement element : new Throwable().getStackTrace()) {
 			if (element.getClassName().equals(this.clazz.getName()) &&
@@ -105,10 +109,12 @@ public class ControlFlowPointcut implements Pointcut, ClassFilter, MethodMatcher
 	}
 
 	/**
-	 * It's useful to know how many times we've fired, for optimization.
+	 * Get the number of times {@link #matches(Method, Class, Object...)} has been
+	 * evaluated.
+	 * <p>Useful for optimization and testing purposes.
 	 */
 	public int getEvaluations() {
-		return this.evaluations.get();
+		return this.evaluationCount.get();
 	}
 
 

spring-aop/src/test/java/org/springframework/aop/support/ControlFlowPointcutTests.java

@@ -27,13 +27,15 @@ import org.springframework.beans.testfixture.beans.TestBean;
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
+ * Tests for {@link ControlFlowPointcut}.
+ *
  * @author Rod Johnson
  * @author Chris Beams
  */
-public class ControlFlowPointcutTests {
+class ControlFlowPointcutTests {
 
 	@Test
-	public void testMatches() {
+	void matches() {
 		TestBean target = new TestBean();
 		target.setAge(27);
 		NopInterceptor nop = new NopInterceptor();
@@ -45,10 +47,12 @@ public class ControlFlowPointcutTests {
 		// Not advised, not under One
 		assertThat(proxied.getAge()).isEqualTo(target.getAge());
 		assertThat(nop.getCount()).isEqualTo(0);
+		assertThat(cflow.getEvaluations()).isEqualTo(1);
 
 		// Will be advised
 		assertThat(new One().getAge(proxied)).isEqualTo(target.getAge());
 		assertThat(nop.getCount()).isEqualTo(1);
+		assertThat(cflow.getEvaluations()).isEqualTo(2);
 
 		// Won't be advised
 		assertThat(new One().nomatch(proxied)).isEqualTo(target.getAge());
@@ -64,7 +68,7 @@ public class ControlFlowPointcutTests {
 	 * expensive.
 	 */
 	@Test
-	public void testSelectiveApplication() {
+	void selectiveApplication() {
 		TestBean target = new TestBean();
 		target.setAge(27);
 		NopInterceptor nop = new NopInterceptor();
@@ -91,24 +95,26 @@ public class ControlFlowPointcutTests {
 	}
 
 	@Test
-	public void testEqualsAndHashCode() throws Exception {
+	void equalsAndHashCode() throws Exception {
 		assertThat(new ControlFlowPointcut(One.class)).isEqualTo(new ControlFlowPointcut(One.class));
 		assertThat(new ControlFlowPointcut(One.class, "getAge")).isEqualTo(new ControlFlowPointcut(One.class, "getAge"));
-		assertThat(new ControlFlowPointcut(One.class, "getAge").equals(new ControlFlowPointcut(One.class))).isFalse();
-		assertThat(new ControlFlowPointcut(One.class).hashCode()).isEqualTo(new ControlFlowPointcut(One.class).hashCode());
-		assertThat(new ControlFlowPointcut(One.class, "getAge").hashCode()).isEqualTo(new ControlFlowPointcut(One.class, "getAge").hashCode());
-		assertThat(new ControlFlowPointcut(One.class, "getAge").hashCode()).isNotEqualTo(new ControlFlowPointcut(One.class).hashCode());
+		assertThat(new ControlFlowPointcut(One.class, "getAge")).isNotEqualTo(new ControlFlowPointcut(One.class));
+
+		assertThat(new ControlFlowPointcut(One.class)).hasSameHashCodeAs(new ControlFlowPointcut(One.class));
+		assertThat(new ControlFlowPointcut(One.class, "getAge")).hasSameHashCodeAs(new ControlFlowPointcut(One.class, "getAge"));
+		assertThat(new ControlFlowPointcut(One.class, "getAge")).doesNotHaveSameHashCodeAs(new ControlFlowPointcut(One.class));
 	}
 
 	@Test
-	public void testToString() {
-		assertThat(new ControlFlowPointcut(One.class).toString())
+	void testToString() {
+		assertThat(new ControlFlowPointcut(One.class)).asString()
 			.isEqualTo(ControlFlowPointcut.class.getName() + ": class = " + One.class.getName() + "; methodName = null");
-		assertThat(new ControlFlowPointcut(One.class, "getAge").toString())
+		assertThat(new ControlFlowPointcut(One.class, "getAge")).asString()
 			.isEqualTo(ControlFlowPointcut.class.getName() + ": class = " + One.class.getName() + "; methodName = getAge");
 	}
 
-	public class One {
+
+	private static class One {
 		int getAge(ITestBean proxied) {
 			return proxied.getAge();
 		}