Use property to specify test java version instead of adding tasks. (#3365)

* Use property to specify test java version instead of adding tasks.

* Typo

.github/workflows/main-build.yml

@@ -14,9 +14,12 @@ jobs:
         os:
           - macos-latest
           - ubuntu-18.04
+        test-java-version:
+          - 8
+          - 11
         include:
           - os: ubuntu-18.04
-            testAdditionalJavaVersions: true
+            test-java-version: 11
             coverage: true
     steps:
       - uses: actions/checkout@v2.3.4
@@ -40,7 +43,7 @@ jobs:
           remote-build-cache-proxy-enabled: false
           arguments: build --stacktrace ${{ matrix.coverage && 'jacocoTestReport' || '' }}
           properties: |
-            testAdditionalJavaVersions=${{ matrix.testAdditionalJavaVersions }}
+            testJavaVersion=${{ matrix.test-java-version }}
             org.gradle.java.installations.paths=${{ steps.setup-java-8.outputs.path }},${{ steps.setup-java-11.outputs.path }}
       - uses: codecov/codecov-action@v1.5.2
         if: ${{ matrix.coverage }}

.github/workflows/pr-build.yml

@@ -14,9 +14,12 @@ jobs:
         os:
           - macos-latest
           - ubuntu-18.04
+        test-java-version:
+          - 8
+          - 11
         include:
           - os: ubuntu-18.04
-            testAdditionalJavaVersions: true
+            test-java-version: 11
             coverage: true
     steps:
       - uses: actions/checkout@v2.3.4
@@ -40,7 +43,7 @@ jobs:
           remote-build-cache-proxy-enabled: false
           arguments: build --stacktrace ${{ matrix.coverage && 'jacocoTestReport' || '' }}
           properties: |
-            testAdditionalJavaVersions=${{ matrix.testAdditionalJavaVersions }}
+            testJavaVersion=${{ matrix.test-java-version }}
             org.gradle.java.installations.paths=${{ steps.setup-java-8.outputs.path }},${{ steps.setup-java-11.outputs.path }}
       - uses: codecov/codecov-action@v1.5.2
         if: ${{ matrix.coverage }}

.github/workflows/pr-examples-build.yml

@@ -15,10 +15,6 @@ jobs:
         os:
           - macos-latest
           - ubuntu-18.04
-        include:
-          - os: ubuntu-18.04
-            testAdditionalJavaVersions: true
-            coverage: true
     steps:
       - uses: actions/checkout@v2.3.4
       - id: setup-java-11

all/build.gradle.kts

@@ -14,10 +14,13 @@ tasks {
         options.release.set(11)
     }
 
-    named("testJava8") {
+    val testJavaVersion: String? by project
+    if (testJavaVersion == "8") {
+        test {
             enabled = false
         }
     }
+}
 
 dependencies {
     rootProject.subprojects.forEach { subproject ->

buildSrc/src/main/kotlin/otel.java-conventions.gradle.kts

@@ -40,24 +40,9 @@ checkstyle {
     configProperties["rootDir"] = rootDir
 }
 
+val testJavaVersion = gradle.startParameter.projectProperties.get("testJavaVersion")?.let(JavaVersion::toVersion)
+
 tasks {
-    val testJava8 by registering(Test::class) {
-        javaLauncher.set(javaToolchains.launcherFor {
-            languageVersion.set(JavaLanguageVersion.of(8))
-        })
-
-        jacoco {
-            enabled = false
-        }
-    }
-
-    val testAdditionalJavaVersions: String? by rootProject
-    if (testAdditionalJavaVersions == "true") {
-        named("check") {
-            dependsOn(testJava8)
-        }
-    }
-
     withType<JavaCompile>().configureEach {
         with(options) {
             release.set(8)
@@ -96,6 +81,12 @@ tasks {
     withType<Test>().configureEach {
         useJUnitPlatform()
 
+        if (testJavaVersion != null) {
+            javaLauncher.set(javaToolchains.launcherFor {
+                languageVersion.set(JavaLanguageVersion.of(testJavaVersion.majorVersion))
+            })
+        }
+
         testLogging {
             exceptionFormat = TestExceptionFormat.FULL
             showExceptions = true

sdk-extensions/jfr-events/build.gradle.kts

@@ -16,11 +16,12 @@ tasks {
         options.release.set(11)
     }
 
-    named("testJava8") {
+    test {
+        val testJavaVersion: String? by project
+        if (testJavaVersion == "8") {
             enabled = false
         }
 
-    named("test") {
         // Disabled due to https://bugs.openjdk.java.net/browse/JDK-8245283
         configure<JacocoTaskExtension> {
             enabled = false