Add code coverage report generation

build.gradle

@@ -21,6 +21,8 @@ allprojects {
     version = project.version
     apply plugin: 'checkstyle'
     apply plugin: 'maven-publish'
+    apply plugin: 'java'
+    apply plugin: 'jacoco'
 
     repositories {
         mavenLocal()
@@ -59,8 +61,29 @@ def stripBallerinaExtensionVersion(String extVersion) {
     }
 }
 
+tasks.register('codeCoverageReport', JacocoReport) {
+    dependsOn = subprojects.test
+
+    executionData fileTree(project.rootDir.absolutePath).include("**/build/coverage-reports/*.exec")
+
+    subprojects.each {
+        sourceSets it.sourceSets.main
+    }
+    reports {
+        xml.required = true
+        html.required = true
+        csv.required = true
+        xml.destination(new File("${buildDir}/reports/jacoco/report.xml"))
+        html.destination(new File("${buildDir}/reports/jacoco/report.html"))
+        csv.destination(new File("${buildDir}/reports/jacoco/report.csv"))
+    }
+
+    onlyIf = {
+        true
+    }
+}
+
 subprojects {
-    apply plugin: 'java'
     configurations {
         ballerinaStdLibs
     }

codecov.yml

@@ -0,0 +1,11 @@
+ignore:
+  - "copybook-tool"
+
+coverage:
+  precision: 2
+  round: down
+  range: "60...80"
+  status:
+    project:
+      default:
+        target: auto

copybook-cli/build.gradle

@@ -59,13 +59,41 @@ tasks.register('copyJar', Copy) {
     into "$rootDir/copybook-tool/build/libs"
 }
 
+jacoco {
+    toolVersion = "${jacocoVersion}"
+}
+
+jacocoTestReport {
+    dependsOn test
+    def classFiles = new File("${rootDir}/copybook-cli/build/classes/java/main/io/ballerina/tools/copybook")
+    additionalClassDirs(classFiles)
+    reports {
+        xml.required = true
+        html.required = true
+    }
+}
+
 checkstyleMain.dependsOn(":checkstyle:downloadCheckstyleRuleFiles")
 checkstyleTest.dependsOn(":checkstyle:downloadCheckstyleRuleFiles")
 
 test {
     useTestNG() {
         suites "src/test/resources/testng.xml"
     }
+
+    testLogging.showStandardStreams = true
+    testLogging {
+        events "PASSED", "FAILED", "SKIPPED"
+        afterSuite { desc, result ->
+            if (!desc.parent) {
+                def output = "Results: ${result.resultType} (${result.testCount} tests, ${result.successfulTestCount} successes, ${result.failedTestCount} failures, ${result.skippedTestCount} skipped)"
+                def startItem = '|  ', endItem = '  |'
+                def repeatLength = startItem.length() + output.length() + endItem.length()
+                println('\n' + ('-' * repeatLength) + '\n' + startItem + output + endItem + '\n' + ('-' * repeatLength))
+            }
+        }
+    }
+    finalizedBy jacocoTestReport
 }
 
 spotbugsMain {

gradle.properties

@@ -14,3 +14,4 @@ copybookParserVersion=0.1.0-SNAPSHOT
 testngVersion=7.7.0
 slf4jVersion=2.0.9
 antlrVersion=4.13.1
+jacocoVersion=0.8.10