The technical principles of the TESTNG framework in the Java class library
The technical principles of the TESTNG framework in the Java class library
introduce:
Testng is a test framework for Java -based development. It provides rich functions and flexible configuration options, making the test simpler and efficient.This article will explore the technical principles of the Testng framework and provide several examples of practical applications.
1. The principle of Testng framework:
The principle of testng is based on annotations, and uses different annotations to mark test methods, tests and test kits.The process of testing the test test test is as follows:
-We first, Testng scan the test code and find all test methods marked as @teest.
-Then, the framework will determine the execution order of the test according to the dependency relationship and priority of the @teest method.
-In the test, the framework will capture abnormalities and assertions failure, so as to generate detailed test reports for each test.
-Finally, the framework will generate the corresponding logs and summary reports according to the test results.
2. Application example of Testng framework:
Here are several practical application examples of using Testng framework.
Example 1: Simple test class
import org.testng.annotations.Test;
public class TestNGExample {
@Test
public void test1() {
// Test logic
}
@Test
public void test2() {
// Test logic
}
}
Example 2: The dependency relationship in the test class
import org.testng.annotations.Test;
public class TestNGExample {
@Test
public void setup() {
// Initialize the test environment
}
@Test(dependsOnMethods={"setup"})
public void test1() {
// Test logic
}
@Test(dependsOnMethods={"setup"})
public void test2() {
// Test logic
}
@Test(dependsOnMethods={"test1", "test2"})
public void cleanup() {
// Clean up the test environment
}
}
Example 3: Test kit use
import org.testng.annotations.Test;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.AfterSuite;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.AfterTest;
public class TestNGExample {
@BeforeSuite
public void setupSuite() {
// The operation performed before the entire test kit
}
@AfterSuite
public void cleanupSuite() {
// The operation of the entire test kit
}
@BeforeTest
public void setupTest() {
// The operation performed before each test
}
@AfterTest
public void cleanupTest() {
// The operation performed after each test
}
@BeforeClass
public void setupClass() {
// The operation performed before each test class
}
@AfterClass
public void cleanupClass() {
// Operations performed after each test class
}
@Test
public void test() {
// Test logic
}
}
Summarize:
By exploring the technical principles of the Testng framework, we learned that Testng is a test framework based on annotation and provides rich functions and flexible configuration options.We also show the use of testng and some commonly used annotations through several practical examples.I hope this article will help you understand and use the Testng framework.
