Learn the technical principle of Kotlin Test Testng framework in the Java class library

The technical principles of Kotlin Test and Testng framework in the Java class library introduction: KOTLIN is a static type programming language based on JVM, compatible with Java, and has the characteristics of more concise, secure and expression.KOTLIN TEST is the official test framework provided by Kotlin, which is used to write unit testing and integrated testing.Testng is a powerful test framework that is suitable for various types of tests, such as unit testing, integrated testing, and end -end testing.Combined with the Kotlin Test and Testng framework, it can be more efficiently compiled, manage and execute test cases to improve software quality and development efficiency. Introduction to Kotlin Test The Kotlin Test framework uses the characteristics of Kotlin, providing a set of simple and powerful APIs to write test cases.It supports various types of tests, including unit testing, integration testing and functional testing.Kotlin Test depends on the Junit library and can be seamlessly integrated with the Testng framework.The characteristics of kotlin test include: 1. The characteristics of supporting Kotlin language: Kotlin Test is optimized for the Kotlin language. You can directly use Kotlin's syntax and characteristics to write test cases, such as high -order functions, extended functions, and data classes. 2. State -style style grammar: Kotlin Test provides a set of declarative APIs that make the test test cases simpler and clearer.APIs in DSL (specific language) style can be used to describe the test scene, making the code more read and easy to maintain. 3. Powerful assertion support: Kotlin Test provides a wealth of assertion functions that can be easily judged.Support common assertions, such as equal judgment, abnormal throwing judgment, etc. Introduction to TESTNG framework Testng is a powerful test framework with flexible configuration and scalability.It is similar to Junit, but provides more features and functions.Testng can be used for various types of tests, such as unit testing, integrated testing and end -to -end testing.The characteristics of testng include: 1. Flexible test configuration: Testng supports the test kit, testing and testing methods through annotations and xml configuration files.You can specify test -dependency, execution order and concurrency strategies. 2. A variety of assertions support: Testng has a variety of assertions, which can be selected to use different assertions according to the situation.For example, you can use ASSERTEQUALS to be more actual and expected, and you can also use Asserttrue and AssertFalse for Boolean judgment. 3. Powerful test report: TestNG generates detailed test reports to display the operation results and execution time of test kits, testing and test methods.Test reports can help developers quickly locate and solve problems. Third, the technical principles of the Kotlin Test Testtng framework in the Java class library Kotlin Testng and Testng frameworks can be seamlessly integrated for use in the Java library.Through the following steps, you can combine them to write and execute test cases: 1. Configuration dependencies: First, configure the dependency items of Kotlin test and testng in the construction file of the project.For example, using Gradle to build tools, you can add the following dependencies: kotlin dependencies { testImplementation("org.jetbrains.kotlin:kotlin-test") testImplementation("org.testng:testng") } 2. Write test case: Create a test class in the test directory of the Java class library, and use the API provided by the Kotlin Test to write test cases.You can use the @Test annotation mark test method and use the assertion function to make an assertion judgment.For example: kotlin import org.testng.annotations.Test import kotlin.test.assertEquals class MyTest { @Test fun testAddition() { val result = 2 + 2 assertEquals(4, result) } } 3. Configure testing operator: Create testng.xml files in the root directory of the Java class library, and configure the running parameters of testng, such as specifying the test class to run.The following is a testng.xml configuration file of an example: <!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" > <suite name="My Suite"> <test name="My Test"> <classes> <class name="com.example.MyTest"/> </classes> </test> </suite> 4. Execute test cases: Use the Java command or build tools, and execute the testng framework in the command line to run the test case.For example, using the Gradle constructing tool can execute the following commands: ./gradlew test After executing the command, Testng will automatically load and execute the test kit to generate detailed test reports. in conclusion: The combination of KOTLIN TEST and Testng frameworks in the Java class library can help developers write, manage and execute test cases more efficiently.Kotlin Test's declarative grammar and powerful assertions make the test use routine compilation easier and clearer.Testng's flexible configuration and powerful test reporting functions provide better test management and results analysis capabilities.By combining Kotlin Test and Testng, the quality and development efficiency of the Java class library can be greatly improved. I hope this article can help you understand the technical principles of Kotlin Test and Testng framework in the Java library.