Solves issue #6

build.gradle

@@ -24,4 +24,6 @@ dependencies {
 
 test {
     useJUnitPlatform()
-}
+}
+
+

src/main/java/se/kth/ci/CIServer.java

@@ -3,15 +3,13 @@
 // HTTP server utilities
 import static spark.Spark.*;
 
-// JSON parsing utilities
-import org.json.*;
-
 // I/O
 import java.io.File;
 import java.io.IOException;
 
-// Recursive directory deletion
 import org.apache.commons.io.FileUtils;
+// JSON parsing utilities
+import org.json.JSONObject;
 
 /**
  * @author Rickard Cornell, Elissa Arias Sosa, Raahitya Botta, Zaina Ramadan, Jean Perbet
@@ -45,6 +43,8 @@ public CIServer(int port, String endpoint, String buildDirectory) {
                     exitCode = triggerBuild(buildDirectory);
                     if (exitCode == ErrorCode.SUCCESS) {
                         System.out.println("Build was successful.");
+                        System.out.println("Running tests..");
+                        triggerTesting(parameters[0], buildDirectory);
                     } else {
                         System.out.println("Build failed.");
                     }
@@ -121,6 +121,37 @@ public ErrorCode triggerBuild(String buildDirectory){
         }
     }
 
+    /**
+     * Method for running Junit tests.  
+     * 
+     */
+    public ErrorCode triggerTesting(String branchName, String testDirectory) {   
+            File testDir = new File(testDirectory);
+            if (testDir.exists() && testDir.isDirectory()){
+                System.out.println("Test directory exists, running tests.");
+                String[] testCommand = new String[]{"./gradlew",  "test"};
+                try {
+                    Process testProcess = Runtime.getRuntime().exec(testCommand, null, testDir);
+                    int testExitCode = testProcess.waitFor();
+                    if (testExitCode == 0) {
+                        System.out.println("tests for branch " + branchName + " succeeded.");
+                        return ErrorCode.SUCCESS;
+                    } else {
+                        System.err.println("tests for branch " + branchName + " failed. Exit code: " + testExitCode);
+                        return ErrorCode.ERROR_TEST;
+                    }
+                } catch (IOException | InterruptedException e) {
+                    System.err.println("Error running shell commands " + e.getMessage());
+                    return ErrorCode.ERROR_IO;
+                }
+
+            }
+            return ErrorCode.ERROR_IO;
+
+    }
+
+
+
     /**
      * Method for parsing JSON response from GitHub webhook into relevant
      * parameters for triggering build process.

src/main/java/se/kth/ci/ErrorCode.java

@@ -17,6 +17,11 @@ public enum ErrorCode {
     // An error occurred while building the project
     ERROR_BUILD,
 
+    // An error occurred while running the project tests
+    ERROR_TEST,
+
+    NO_TESTS,
+
     // The build was successful
     SUCCESS
 }

src/test/java/se/kth/ci/CIServerTest.java

@@ -1,15 +1,15 @@
 package se.kth.ci;
 
-import org.apache.commons.io.FileUtils;
-import org.junit.jupiter.api.AfterAll;
-import org.junit.jupiter.api.BeforeAll;
-import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
 
 import java.io.File;
 import java.io.IOException;
 import java.util.Objects;
 
-import static org.junit.jupiter.api.Assertions.*;
+import org.apache.commons.io.FileUtils;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
 
 
 class CIServerTest {
@@ -137,4 +137,54 @@ public void triggerValidBuild(){
         }
 
     }
+
+    /**
+     * Test for method `triggerTesting`
+     * Checks that when a project does not contain tests, the method returns NO_TESTS 
+     */
+    @Test
+    public void repoWithoutTests(){
+        String branchName = "main";
+        ClassLoader classLoader = getClass().getClassLoader();
+        try {
+            String filePath = Objects.requireNonNull(classLoader.getResource("valid_build_test")).getFile();
+            ErrorCode exitCodeTest = server.triggerTesting(branchName,filePath);
+            assertEquals(ErrorCode.SUCCESS, exitCodeTest, "Testing for a project without tests failed");
+        } catch (NullPointerException e){
+            System.err.println("Error while getting file path.");
+        }
+
+    }
+
+    /**
+     * Test for method `triggerTesting`
+     * Checks that when a project has valid tests, the method returns SUCCESS
+     */
+    @Test
+    public void triggerValidTests(){
+        String branchName = "main";
+        ClassLoader classLoader = getClass().getClassLoader();
+        String filePath = Objects.requireNonNull(classLoader.getResource("second_valid_tests")).getFile();
+        ErrorCode exitCodeTest = server.triggerTesting(branchName,filePath);
+        assertEquals(ErrorCode.SUCCESS, exitCodeTest, "Testing for valid tests failed");
+
+    }
+
+    /**
+     * Test for method `triggerTesting`
+     * Checks that when a project has invalid tests, the method returns ERROR_TEST
+     */
+    @Test
+    public void triggerInvalidTests(){
+        String branchName = "main";
+        ClassLoader classLoader = getClass().getClassLoader();
+        try {
+            String filePath = Objects.requireNonNull(classLoader.getResource("second_invalid_tests")).getFile();
+            ErrorCode exitCodeTest = server.triggerTesting(branchName,filePath);
+            assertEquals(ErrorCode.ERROR_TEST, exitCodeTest, "Testing for invalid tests was successful");
+        } catch (NullPointerException e){
+            System.err.println("Error while getting file path.");
+        }
+
+    }
 }

src/test/resources/second_invalid_tests/.gitattributes

@@ -0,0 +1,9 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+

src/test/resources/second_invalid_tests/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

src/test/resources/second_invalid_tests/build.gradle

@@ -0,0 +1,26 @@
+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This is a general purpose Gradle build.
+ * To learn more about Gradle by exploring our Samples at https://docs.gradle.org/8.6/samples
+ */
+
+plugins {
+    id 'java'
+    id 'application'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation platform('org.junit:junit-bom:5.9.1')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+    implementation 'com.sparkjava:spark-core:2.9.4'
+    implementation 'org.slf4j:slf4j-nop:2.0.11'
+}
+
+test {
+    useJUnitPlatform()
+}

src/test/resources/second_invalid_tests/gradle/libs.versions.toml

@@ -0,0 +1,2 @@
+# This file was generated by the Gradle 'init' task.
+# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format

src/test/resources/second_invalid_tests/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists