Added jacoco test coverage report generation.

.cirrus.yml

@@ -1,13 +1,15 @@
 container:
-  image: gradle:jdk11
+  image: gradle:jdk17
 
-check_task:
+testCoverage_task:
   gradle_cache:
     folder: ~/.gradle/caches
-  check_script: gradle check
+  check_script: gradle jacocoTestReport
   cleanup_before_cache_script:
     - rm -rf ~/.gradle/caches/$GRADLE_VERSION/
     - rm -rf ~/.gradle/caches/transforms-1
     - rm -rf ~/.gradle/caches/journal-1
     - rm -rf ~/.gradle/caches/jars-3/*/buildSrc.jar
-    - find ~/.gradle/caches/ -name "*.lock" -type f -delete
+    - find ~/.gradle/caches/ -name "*.lock" -type f -delete
+  always:
+    sendCoverageStatistics: bash <(curl -s https://codecov.io/bash)

build.gradle

@@ -2,6 +2,7 @@ plugins {
     id 'java-library'
     id 'maven-publish'
     id 'signing'
+    id 'jacoco'
 }
 
 repositories {
@@ -21,7 +22,7 @@ dependencies {
 group = 'com.github.prominence'
 version = '3.0.0-SNAPSHOT'
 description = 'Java OpenWeatherMap API'
-java.sourceCompatibility = JavaVersion.VERSION_11
+java.sourceCompatibility = JavaVersion.VERSION_17
 
 ext {
     isReleaseVersion = !version.endsWith("SNAPSHOT")
@@ -32,6 +33,10 @@ java {
     withJavadocJar()
 }
 
+test {
+    useJUnitPlatform()
+}
+
 publishing {
     publications {
         mavenJava(MavenPublication) {
@@ -94,3 +99,13 @@ tasks.withType(JavaCompile) {
 tasks.withType(GenerateModuleMetadata) {
     enabled = false
 }
+
+jacocoTestReport {
+    dependsOn test // tests are required to run before generating the report
+    reports {
+        xml.required = false
+        csv.required = false
+        html.outputLocation = layout.buildDirectory.dir('jacocoHtml')
+    }
+}
+