Bhanuteja01/samples-java

Keploy Java SDK samples

Example Employee-Manager App

A sample Employee-Manager app to test Keploy integration capabilities using SpringBoot and PostgreSQL.

Note :- Issue Creation is disabled on this Repository, please visit here to submit Issue.

Pre-requisites

• Java 8+

Quick Installation of "KEPLOY" server

MacOS

MacOS

curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_darwin_all.tar.gz" | tar xz -C /tmp

sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin && keploy

Linux

Linux

curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_linux_amd64.tar.gz" | tar xz -C /tmp

sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin && keploy

Linux ARM

curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_linux_arm64.tar.gz" | tar xz -C /tmp

sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin && keploy

Windows

Windows

• Download the Keploy Windows AMD64, and extract the files from the zip folder.
• Run the keploy.exe file.

Windows ARM

• Download the Keploy Windows ARM64, and extract the files from the zip folder.
• Run the keploy.exe file.

Build configuration

Find the latest release of the Keploy Java SDK at maven central.

Add keploy-sdk as a dependency to your pom.xml:

<dependency>
  <groupId> io.keploy </groupId>
  <artifactId> keploy-sdk </artifactId>
  <version> N.N.N </version> (eg: 1.2.8)
</dependency>

or to build.gradle:

implementation 'io.keploy:keploy-sdk:N.N.N' (eg: 1.2.8)

Usage

• Refer this.

Setup Employee-Manager App

git clone https://github.com/keploy/samples-java 

Agent-jar

Download the latest version (1.2.8) of agent jar from here and add this jar to main directory.

Start PostgreSQL instance

Download docker dekstop from here.

docker-compose up -d

Maven clean install

mvn clean install -Dmaven.test.skip=true 

Set KEPLOY_MODE to record

• To record testcases use KEPLOY_MODE and DENOISE as env variables. Set KEPLOY to record mode and mark DENOISE as true. Also add

-javaagent:path of agent jar like this 👇.

Generate testcases

To generate testcases we just need to make some API calls. You can use Postman , Hoppscotch, or simply curl

1. Make an employee entry

curl --location --request POST 'http://localhost:8080/api/employees' \
--header 'Content-Type: application/json' \
--data-raw '{
    "firstName": "Myke",
    "lastName": "Tyson",
    "email": "mt@gmail.com",
    "timestamp":1
}'

this will return the response or an entry. The timestamp would automatically be ignored during testing because it'll always be different.

{
    "id": 1,
    "firstName": "Myke",
    "lastName": "Tyson",
    "email": "mt@gmail.com",
    "timestamp": 1661493301
}

2. Fetch recorded info about employees

curl --location --request GET 'http://localhost:8080/api/employees/1'

or by querying through the browser http://localhost:8080/api/employees/1

Now both these API calls were captured as editable testcases and written to test/e2e/keploy-tests folder. The keploy directory would also have mocks folder.

Now, let's see the magic! 🪄💫

Test mode

There are 2 ways to test the application with Keploy.

1. Unit Test File
2. Without Unit Test File

Testing using Unit Test File

• Set KEPLOY_MODE = test (default "off")

NOTE: You will be required to set the javaagent again in your test profile just like below.

• Now that we have our testcase captured, run the unit test file (SampleJavaApplication_Test.java) already present in the sample app repo.

• If not present, you can make and add below code in SampleJavaApplication_Test.java in the test module of your sample application.

   @Test
   public void TestKeploy() throws InterruptedException {

       CountDownLatch countDownLatch = HaltThread.getInstance().getCountDownLatch();
       Mode.setTestMode();

       new Thread(() -> {
           <Your Application Class>.main(new String[]{""});
           countDownLatch.countDown();
       }).start();

       countDownLatch.await();
       assertTrue(AssertKTests.result(), "Keploy Test Result");
   }

• Using IDE: (for local use-case we prefer running tests via IDE)

  1. Run your application.
  2. You can also run the application with coverage to see the test coverage.

• Using command line

  1. Add maven-surefire-plugin to your pom.xml. In <argLine> </argLine> don't add jacoco agent if you don't want coverage report.

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>2.22.2</version>
            <configuration>
  
        <!-- <skipTests>true</skipTests> -->
            <argLine>
               -javaagent:<your full path to agent jar>.jar
               -javaagent:${settings.localRepository}/org/jacoco/org.jacoco.agent/0.8.7/org.jacoco.agent-0.8.7-runtime.jar=destfile=target/jacoco.exec
            </argLine>
  
                <systemPropertyVariables>
                    <jacoco-agent.destfile>target/jacoco.exec
                    </jacoco-agent.destfile>
                </systemPropertyVariables>
            </configuration>
        </plugin>

  2. If you want coverage report also add Jacoco plugin to your pom.xml.

        <plugin>
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
            <version>0.8.7</version>
            <executions>
                 <execution>
                     <id>prepare-agent</id>
                     <goals>
                       <goal>prepare-agent</goal>
                     </goals>
                 </execution>
                 <execution>
                     <id>report</id>
                       <phase>prepare-package</phase>
                       <goals>
                            <goal>report</goal>
                       </goals>
                 </execution>
                 <execution>
                      <id>post-unit-test</id>
                        <phase>test</phase>
                        <goals>
                            <goal>report</goal>
                        </goals>
                        <configuration>
                            <!-- Sets the path to the file which contains the execution data. -->
  
                            <dataFile>target/jacoco.exec</dataFile>
                            <!-- Sets the output directory for the code coverage report. -->
                            <outputDirectory>target/my-reports</outputDirectory>
                        </configuration>
                 </execution>
            </executions>
        </plugin>

  3. Run your tests using command : mvn test.

It will create .html files as test-reports which can be found in your target folder !!

We got 53% without writing any testcases. 🎉

Go to the Keploy Console TestRuns Page to get deeper insights on what testcases ran, what failed.

Testing without using Unit Test File

To test using KEPLOY_MODE env variable, set the same to test mode.

export KEPLOY_MODE=test

Now simply run the application either by ide or using command:

java -javaagent:<your full path to agent jar>.jar -jar <your full path to appliation jar>.jar

Keploy will run all the captures test-cases, compare and show the results on the console.

10b3ddd5-42fa-48e7-b98a-b47257272e39 total tests: 2
2022-08-26 14:13:08.993  INFO 11560 --- [       Thread-4] io.keploy.service.GrpcService            : testing 1 of 2 testcase id: [ae4a6c91-712a-4566-bf0d-97d708f94b2d]
2022-08-26 14:13:08.994  INFO 11560 --- [       Thread-4] io.keploy.service.GrpcService            : testing 2 of 2 testcase id: [4843e03e-76a8-4194-99cb-f62740978d15]
2022-08-26 14:13:09.061  INFO 11560 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-08-26 14:13:09.061  INFO 11560 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2022-08-26 14:13:09.062  INFO 11560 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 1 ms
Hibernate: insert into employees (email, first_name, last_name, timestamp) values (?, ?, ?, ?)
2022-08-26 14:13:09.247  INFO 11560 --- [pool-3-thread-1] io.keploy.service.GrpcService            : result : testcase id: [ae4a6c91-712a-4566-bf0d-97d708f94b2d]  passed: true
Hibernate: select employee0_.id as id1_0_0_, employee0_.email as email2_0_0_, employee0_.first_name as first_na3_0_0_, employee0_.last_name as last_nam4_0_0_, employee0_.timestamp as timestam5_0_0_ from employees employee0_ where employee0_.id=?
2022-08-26 14:13:09.291  INFO 11560 --- [pool-3-thread-1] io.keploy.service.GrpcService            : result : testcase id: [4843e03e-76a8-4194-99cb-f62740978d15]  passed: true
2022-08-26 14:13:09.388  INFO 11560 --- [       Thread-4] io.keploy.service.GrpcService            : test run completed with run id [1e81233d-e3be-4a4a-afda-a800902ad965]
2022-08-26 14:13:09.388  INFO 11560 --- [       Thread-4] io.keploy.service.GrpcService            : || passed overall: TRUE ||
2022-08-26 14:13:19.408  INFO 11560 --- [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2022-08-26 14:13:19.410  INFO 11560 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2022-08-26 14:13:19.414  INFO 11560 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

Let's add a Bug in the App

Now let's introduce a bug! Let's try changing something like adding some extra headers in controllers ./EmployeeController.java on line 35 like :

return ResponseEntity.ok().header("MyNewHeader","abc").body(employee);

Let's run the test-file to see if Keploy catches the regression introduced.

mvn test

You'll notice the failed test-case in the output.

2022-08-26 13:10:10.289 TRACE 70155 --- [nio-8080-exec-2] o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [BIGINT] - [1]
2022-08-26 13:10:10.307  INFO 70155 --- [pool-3-thread-1] io.keploy.service.GrpcService            : result : testcase id: [d42a3724-2c78-4f42-8dc6-d25a9b611c7c]  passed: false
2022-08-26 13:10:10.312  INFO 70155 --- [       Thread-1] io.keploy.service.GrpcService            : test run completed with run id [fcb61332-1025-463f-854e-6f406bce870d]
2022-08-26 13:10:10.312  INFO 70155 --- [       Thread-1] io.keploy.service.GrpcService            : || passed overall: FALSE ||

To deep dive the problem go to test runs

In case of any query, refer to video below,