Gradle(7) 軟體品質把關-測試

開發程式最重要的事情就是測試我們的程式，Gradle支援JUnit和TestNG測試框架。我們開始學習如何自動化的測試程式。

(1)測試之道
在gradle預設測試的目錄為src/test/java/<test_package>，如果你要修改測試的目錄可以參考下列範例

sourceSets {     test {           java {               srcDir 'testSrc'            }    }}

• Junit

dependencies {
        testCompile group: 'junit', name: 'junit', version: '4.+'
       
}

$ gradle test
:compileJava
:processResources
:classes
:compileTestJava
:processTestResources
:testClasses
:test
BUILD SUCCESSFUL

• TestNG

dependencies {
       testCompile 'org.testng:testng:6.5.1'       
}

範例一 寫一個計算機，可以做四則運算(加、減、乘、除)並做測試

Gradle.build

apply plugin: 'java'

repositories{
    flatDir{
        dirs 'C:\\Program Files\\Apache Software Foundation\\Tomcat 7.0\\lib'
        
    }
    mavenCentral()

}

dependencies {
        compile group: 'org.springframework', name: 'servlet-api'
        compile group: 'org.springframework', name: 'jsp-api'
        testCompile group: 'junit', name: 'junit', version: '4.+'
       
}
   

計算機的檔案: src/main/java/org/gradle/main/Calculator.java
實作計算機的基本操作。

package org.gradle.main;

public class Calculator {
   
    public int sum(int a, int b){
        return a+b;
    }
   
   
    public int minus(int a, int b){
        return a-b ;
    }
   
    public int  multiply(int a, int b){
        return a*b ;
    }
   
    public int  divide(int a, int b){
        return a/b ;
    }
   
}

測試計算機 :src/main/java/org/gradle/test/CalculatorTest.java

package org.gradle.test;

import org.gradle.main.Calculator;
import org.junit.Assert;
import org.junit.Test;

public class CalculatorTest {
   
    @Test
    public void testSum(){
        final Calculator calculator = new Calculator() ;
        int sum = calculator.sum(1, 1) ;
        int expectSum = 2 ;
        Assert.assertEquals("1+1=",expectSum, sum);
       
    }
   
    @Test
    public void testMinus(){
        final Calculator calculator = new Calculator() ;
        int sum = calculator.minus(1, 1) ;
        int expectSum = 0 ;
        Assert.assertEquals("1-1=",expectSum, sum);
       
    }
   
    @Test
    public void testMultiply(){
        final Calculator calculator = new Calculator() ;
        int sum = calculator.multiply(5, 10) ;
        int expectSum = 50 ;
        Assert.assertEquals("5*10=",expectSum, sum);
       
    }
   
    @Test
    public void testDivide(){
        final Calculator calculator = new Calculator() ;
        int sum = calculator.divide(10, 5) ;
        int expectSum = 2 ;
        Assert.assertEquals("10/5=",expectSum, sum); 
    }

}

執行指令 : $ > gradle test

測試結果:
由測試報告通常放置在build/reports/tests裡面