junit

JavaLearn/JavaLearn.iml

@@ -7,5 +7,21 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module-library">
+      <library name="JUnit5.4">
+        <CLASSES>
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter/5.4.2/junit-jupiter-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-api/5.4.2/junit-jupiter-api-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/apiguardian/apiguardian-api/1.0.0/apiguardian-api-1.0.0.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/opentest4j/opentest4j/1.1.1/opentest4j-1.1.1.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-commons/1.4.2/junit-platform-commons-1.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-params/5.4.2/junit-jupiter-params-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/jupiter/junit-jupiter-engine/5.4.2/junit-jupiter-engine-5.4.2.jar!/" />
+          <root url="jar://$MAVEN_REPOSITORY$/org/junit/platform/junit-platform-engine/1.4.2/junit-platform-engine-1.4.2.jar!/" />
+        </CLASSES>
+        <JAVADOC />
+        <SOURCES />
+      </library>
+    </orderEntry>
   </component>
 </module>

JavaLearn/src/math.java

@@ -2,4 +2,5 @@ public class math {
     public static void main(String[] args){
         System.out.println(Math.sin(Math.PI / 2));
     }
+    public void Myprint(){System.out.println(Math.sin(Math.PI / 2));}
 }

JavaLearn/src/mathTest.java

@@ -0,0 +1,22 @@
+import org.junit.jupiter.api.*;
+
+public class mathTest {
+    @BeforeEach
+    public void init(){
+        System.out.println("init...");
+    }
+
+    @AfterEach
+    public void close(){
+        System.out.println("close...");
+    }
+
+
+    @Test
+    public void testMath(){
+        math test = new math();
+        test.Myprint();
+
+    }
+
+}

JavaLearn/src/medium/Check/Calculator.java

@@ -0,0 +1,12 @@
+package medium.Check;
+
+public class Calculator {
+//    @Check
+    public int sum(int a, int b){
+        return (a + b);
+    }
+    @Check
+    public void p(){
+        System.out.println("NoAnnotation");
+    }
+}

JavaLearn/src/medium/Check/Check.java

@@ -0,0 +1,12 @@
+package medium.Check;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+
+public @interface Check {
+}

JavaLearn/src/medium/Check/TestCheck.java

@@ -0,0 +1,42 @@
+package medium.Check;
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class TestCheck {
+    public static void main(String[] args) throws IOException {
+        Calculator c = new Calculator();
+        Class cls = c.getClass();
+        Method[] methods = cls.getMethods();
+
+        int num = 0;
+        BufferedWriter bw = new BufferedWriter(new FileWriter("bug.txt"));
+
+        for(Method method : methods){
+            if (method.isAnnotationPresent(Check.class)){
+                try {
+                    method.invoke(c);
+                } catch (Exception e) {
+                    //捕获异常
+                    num ++;
+                    bw.write(method.getName() + "方法出异常了");
+                    bw.newLine();
+                    bw.write("异常的名称:" + e.getClass().getSimpleName());
+                    bw.newLine();
+                    bw.write("异常原因:" + e.getCause().getMessage());
+                    bw.newLine();
+                    bw.write("------------------------------------");
+                    bw.newLine();
+                }
+            }
+        }
+        bw.write("本次测试共有" + num + "次异常");
+        bw.flush();
+        bw.close();
+    }
+
+
+}