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谁能帮助转换下面的JAVA到DART ...注释/元数据中镖郎
我想明白注释，无法找到足够的DART文档，发现这个JAVA例子here;试图将其转换成DART但未能:(
Test.java
package com.mkyong.test.core;
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) //can use in method only.
public @interface Test {
//should ignore this test?
public boolean enabled() default true;
}
TesterInfo.java
package com.mkyong.test.core;
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.TYPE) //on class level
public @interface TesterInfo {
public enum Priority {
LOW, MEDIUM, HIGH
}
Priority priority() default Priority.MEDIUM;
String[] tags() default "";
String createdBy() default "Mkyong";
String lastModified() default "03/01/2014";
}
TestExample.java
package com.mkyong.test;
import com.mkyong.test.core.Test;
import com.mkyong.test.core.TesterInfo;
import com.mkyong.test.core.TesterInfo.Priority;
@TesterInfo(
priority = Priority.HIGH,
createdBy = "mkyong.com",
tags = {"sales","test" }
)
public class TestExample {
@Test
void testA() {
if (true)
throw new RuntimeException("This test always failed");
}
@Test(enabled = false)
void testB() {
if (false)
throw new RuntimeException("This test always passed");
}
@Test(enabled = true)
void testC() {
if (10 > 1) {
// do nothing, this test always passed.
}
}
}
RunTest.java
package com.mkyong.test;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import com.mkyong.test.core.Test;
import com.mkyong.test.core.TesterInfo;
public class RunTest {
public static void main(String[] args) throws Exception {
System.out.println("Testing...");
int passed = 0, failed = 0, count = 0, ignore = 0;
Class<TestExample> obj = TestExample.class;
// Process @TesterInfo
if (obj.isAnnotationPresent(TesterInfo.class)) {
Annotation annotation = obj.getAnnotation(TesterInfo.class);
TesterInfo testerInfo = (TesterInfo) annotation;
System.out.printf("%nPriority :%s", testerInfo.priority());
System.out.printf("%nCreatedBy :%s", testerInfo.createdBy());
System.out.printf("%nTags :");
int tagLength = testerInfo.tags().length;
for (String tag : testerInfo.tags()) {
if (tagLength > 1) {
System.out.print(tag + ", ");
} else {
System.out.print(tag);
}
tagLength--;
}
System.out.printf("%nLastModified :%s%n%n", testerInfo.lastModified());
}
// Process @Test
for (Method method : obj.getDeclaredMethods()) {
// if method is annotated with @Test
if (method.isAnnotationPresent(Test.class)) {
Annotation annotation = method.getAnnotation(Test.class);
Test test = (Test) annotation;
// if enabled = true (default)
if (test.enabled()) {
try {
method.invoke(obj.newInstance());
System.out.printf("%s - Test '%s' - passed %n", ++count, method.getName());
passed++;
} catch (Throwable ex) {
System.out.printf("%s - Test '%s' - failed: %s %n", ++count, method.getName(), ex.getCause());
failed++;
}
} else {
System.out.printf("%s - Test '%s' - ignored%n", ++count, method.getName());
ignore++;
}
}
}
System.out.printf("%nResult : Total : %d, Passed: %d, Failed %d, Ignore %d%n", count, passed, failed, ignore);
}
}
的输出上面应该是：
测试...
优先级：高 CreatedBy：mkyong.com 标签：销售，测试 上次更改时间：2014年3月1日
1 - 测试 '种皮' - 失败：了java.lang.RuntimeException：此测试总是失败 2 - 测试 'TESTC' - 通过 3 - 测试 'TESTB' - 忽略
结果：共有3条，通过：1，失败1，忽略1