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[英]mvn test + JUnit5 + log4j: Why logs printed in @BeforeAll and @BeforeEach are not output to console?
[英]Junit5 Parameterized Test LifeCycle. why @BeforeAll and static block run after all the tests
我在下面發布了一個簡單的代碼,為什么 @BeforeAll 注釋方法和靜態塊在參數化測試之后運行? 在這種情況下,如何在 Junit5 中加載參數化測試或利用 @BeforeAll 或靜態塊的功能之前注冊公共對象或數據庫連接。 (僅供參考:Junit4 中參數化測試的等效代碼在所有測試之前運行靜態塊。但不是 @BeforeClass 注釋方法。)
package com.something;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.*;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.ValueSource;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Stream;
public class Example {
MathUtils utils;
static{
System.out.println("Static Block------");
}
@BeforeAll
static void beforeAllInit(){
System.out.println("This will run Before all tests");
}
@BeforeEach //fresh instance before each test method
void Init(){
utils = new MathUtils();
System.out.println("utils init()");
}
@AfterEach
void cleanup(){
System.out.println("Cleaning Up...");
}
//@Test
@ParameterizedTest
@CsvSource(value={"1,2,3","10,10,20","5,9,14"})
void testAdd(int num1, int num2, int exp){
//MathUtils utils = new MathUtils();
//int exp = 3;
int actual = utils.add(num1,num2);
assertEquals(exp,actual,"Adding two numbers");
}
@ParameterizedTest
@MethodSource("createDataCollection")
void testMethod(ReadJson rj) {
assertNotNull(rj);
}
public Stream<ReadJson> createDataCollection() {
//beforeAllInit();
final List<ReadJson> testInputs = new ArrayList<>();
testInputs.add(new ReadJson("one","something","Miami","ABC"));
testInputs.add(new ReadJson("two","something","New York","ABC"));
testInputs.add(new ReadJson("three","something","Redlands","ABC"));
return testInputs.stream();
}
}
實用程序初始化()
打掃干凈...
實用程序初始化()
打掃干凈...
實用程序初始化()
打掃干凈...
靜態塊-----
這將在所有測試之前運行
進程以退出代碼 0 結束
無法重現。 以下測試文件:
package com.example;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.CsvSource;
import static org.junit.jupiter.api.Assertions.assertEquals;
class JUnitTests {
static {
System.out.println("Static initializer...");
}
@BeforeAll
static void beforeAll() {
System.out.println("Before all...");
}
@BeforeEach
void beforeEach() {
System.out.println("Before each...");
}
@ParameterizedTest
@CsvSource(value = {"5,5,10", "2,3,5"})
void parameterizedTest(int x, int y, int r) {
System.out.printf("Parameterized test (%d, %d, %d)...%n", x, y, r);
assertEquals(r, x + y, () -> String.format("%d + %d expected to equal %d", x, y, r));
}
@AfterEach
void afterEach() {
System.out.println("After each...");
}
@AfterAll
static void afterAll() {
System.out.println("After all...");
}
}
使用以下 Gradle 構建腳本編譯並執行:
plugins {
java
}
repositories {
mavenCentral()
}
dependencies {
testImplementation("org.junit.jupiter:junit-jupiter:5.8.2")
}
tasks.test {
useJUnitPlatform()
testLogging {
showStandardStreams = true
}
}
給出以下輸出:
> Task :test
JUnitTests STANDARD_OUT
Static initializer...
Before all...
JUnitTests > parameterizedTest(int, int, int) > com.example.JUnitTests.parameterizedTest(int, int, int)[1] STANDARD_OUT
Before each...
Parameterized test (5, 5, 10)...
After each...
JUnitTests > parameterizedTest(int, int, int) > com.example.JUnitTests.parameterizedTest(int, int, int)[2] STANDARD_OUT
Before each...
Parameterized test (2, 3, 5)...
After each...
JUnitTests STANDARD_OUT
After all...
BUILD SUCCESSFUL in 3s
3 actionable tasks: 3 executed
如您所見,一切都按預期的順序執行。
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