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support invoke private companion object method in kotlin

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金戟 2020-12-01 23:49:48 +08:00
parent 001001bfd3
commit 1d98e3c618
6 changed files with 56 additions and 35 deletions
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16
demo/java-demo/src/main/java/com/alibaba/testable/demo/DemoPrivateAccess.java
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@ -18,22 +18,6 @@ public class DemoPrivateAccess {
*/
public final Double pi = 3.14;
/**
* method accessing private static field
*/
public static String privateStaticFieldAccessFunc() {
staticCount += 3;
return String.valueOf(staticCount);
}
/**
* method accessing private member field
*/
public String privateFieldAccessFunc() {
count += 2;
return String.valueOf(count);
}
/**
* private static method
*/

12
demo/java-demo/src/test/java/com/alibaba/testable/demo/DemoPrivateAccessTest.java
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@ -20,12 +20,10 @@ class DemoPrivateAccessTest {
@Test
void should_able_to_access_private_field() throws Exception {
demoPrivateAccess.count = 2;
assertEquals("4", demoPrivateAccess.privateFieldAccessFunc());
assertEquals(new Integer(4), demoPrivateAccess.count);
assertEquals(new Integer(2), demoPrivateAccess.count);
PrivateAccessor.set(demoPrivateAccess, "count", 3);
assertEquals("5", demoPrivateAccess.privateFieldAccessFunc());
assertEquals(new Integer(5), PrivateAccessor.get(demoPrivateAccess, "count"));
assertEquals(new Integer(3), PrivateAccessor.get(demoPrivateAccess, "count"));
}
@Test
@ -37,12 +35,10 @@ class DemoPrivateAccessTest {
@Test
void should_able_to_access_private_static_field() throws Exception {
//DemoPrivateAccess.staticCount = 2;
//assertEquals("5", DemoPrivateAccess.privateStaticFieldAccessFunc());
//assertEquals(new Integer(5), DemoPrivateAccess.staticCount);
//assertEquals(new Integer(2), DemoPrivateAccess.staticCount);
PrivateAccessor.setStatic(DemoPrivateAccess.class, "staticCount", 3);
assertEquals("6", DemoPrivateAccess.privateStaticFieldAccessFunc());
assertEquals(new Integer(6), PrivateAccessor.getStatic(DemoPrivateAccess.class, "staticCount"));
assertEquals(new Integer(3), PrivateAccessor.getStatic(DemoPrivateAccess.class, "staticCount"));
}
@Test

36
demo/kotlin-demo/src/main/kotlin/com/alibaba/testable/demo/DemoPrivateAccess.kt
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@ -2,23 +2,43 @@ package com.alibaba.testable.demo
class DemoPrivateAccess {
/**
* a private member field
*/
private var count = 0
final val pi = 3.14
/**
* a constant field
*/
val pi = 3.14
/**
* private method
* private member method
*/
private fun privateFunc(s: String, i: Int): String {
return "$s - $i"
}
/**
* method with private field access
*/
fun privateFieldAccessFunc(): String {
count += 2
return count.toString()
companion object {
/**
* a private static field
*/
private var staticCount = 0
/**
* private static method
*/
private fun privateStaticFunc(s: String, i: Int): String {
return "$s + $i"
}
/**
* private jvm static method
*/
@JvmStatic private fun privateJvmStaticFunc(s: String, i: Int): String {
return "$s * $i"
}
}
}

15
demo/kotlin-demo/src/test/kotlin/com/alibaba/testable/demo/DemoPrivateAccessTest.kt
View File

@ -17,8 +17,19 @@ internal class DemoPrivateAccessTest {
@Test
fun should_able_to_access_private_field() {
PrivateAccessor.set(demoPrivateAccess, "count", 3)
assertEquals("5", demoPrivateAccess.privateFieldAccessFunc())
assertEquals(5, PrivateAccessor.get(demoPrivateAccess, "count"))
assertEquals(3, PrivateAccessor.get(demoPrivateAccess, "count"))
}
@Test
fun should_able_to_access_private_static_method() {
assertEquals("hello + 1", PrivateAccessor.invokeStatic(DemoPrivateAccess::class.java, "privateStaticFunc", "hello", 1))
assertEquals("hello * 1", PrivateAccessor.invokeStatic(DemoPrivateAccess::class.java, "privateJvmStaticFunc", "hello", 1))
}
@Test
fun should_able_to_access_private_static_field() {
PrivateAccessor.setStatic(DemoPrivateAccess::class.java, "staticCount", 3)
assertEquals(3, PrivateAccessor.getStatic(DemoPrivateAccess::class.java, "staticCount"))
}
@Test

11
testable-core/src/main/java/com/alibaba/testable/core/accessor/PrivateAccessor.java
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@ -10,6 +10,8 @@ import java.lang.reflect.Method;
*/
public class PrivateAccessor {
private static final String KOTLIN_COMPANION_FIELD = "Companion";
public static <T> T get(Object ref, String field) {
try {
Field declaredField = ref.getClass().getDeclaredField(field);
@ -75,6 +77,15 @@ public class PrivateAccessor {
declaredMethod.setAccessible(true);
return (T)declaredMethod.invoke(null, args);
}
// fit kotlin companion object, will throw 'NoSuchFieldException' otherwise
Field companionClassField = clazz.getDeclaredField(KOTLIN_COMPANION_FIELD);
declaredMethod = TypeUtil.getMethodByNameAndParameterTypes(
companionClassField.getType().getDeclaredMethods(), method, cls);
Object companionInstance = getStatic(clazz, KOTLIN_COMPANION_FIELD);
if (declaredMethod != null && companionInstance != null) {
declaredMethod.setAccessible(true);
return (T)declaredMethod.invoke(companionInstance, args);
}
} catch (Exception e) {
System.err.println("Failed to invoke private static method \"" + method + "\": " + e.toString());
return null;

1
testable-core/src/main/java/com/alibaba/testable/core/util/TestableUtil.java
View File

@ -67,7 +67,6 @@ public class TestableUtil {
}
}
}
System.err.println("testCaseName: " + testCaseName);
return testCaseName;
}