Adding Github summary action for Java test

Author: Hartorn

backend/build.gradle.kts

@@ -1,7 +1,13 @@
+import org.gradle.api.tasks.testing.TestResult.ResultType
+import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+import org.gradle.api.tasks.testing.logging.TestLogEvent
+
 import java.text.SimpleDateFormat
 import java.time.Instant
+import java.io.FileWriter
 import java.util.*
 
+
 group = "ai.giskard"
 description = "Giskard main java backend"
 
@@ -267,9 +273,12 @@ tasks {
     test {
         exclude("**/*IT*", "**/*IntTest*")
         testLogging {
-            events.add(org.gradle.api.tasks.testing.logging.TestLogEvent.FAILED)
-            events.add(org.gradle.api.tasks.testing.logging.TestLogEvent.SKIPPED)
+            events = setOf(
+                TestLogEvent.FAILED,
+                TestLogEvent.SKIPPED
+            )
         }
+
         jvmArgs?.add("-Djava.security.egd=file:/dev/./urandom -Xmx256m")
         reports.html.required.set(false)
     }
@@ -282,17 +291,70 @@ tasks {
         description = "Execute integration tests."
         group = "verification"
         include("**/*IT*", "**/*IntTest*")
+
         testLogging {
             events = setOf(
-                org.gradle.api.tasks.testing.logging.TestLogEvent.FAILED,
-                org.gradle.api.tasks.testing.logging.TestLogEvent.SKIPPED
+                TestLogEvent.FAILED,
+                TestLogEvent.SKIPPED
             )
         }
+        // Improvement ? 
+        // https://stackoverflow.com/questions/3963708/gradle-how-to-display-test-results-in-the-console-in-real-time#answer-36130467
+        // https://gist.github.com/serpro69/c987a4016fb59f6ca2ff9f8d8464561d
+
         jvmArgs?.add("-Djava.security.egd=file:/dev/./urandom -Xmx256m")
         if (project.hasProperty("testcontainers")) {
             environment = mapOf("spring.profiles.active" to "testcontainers")
         }
         reports.html.required.set(false)
+
+        beforeSuite(KotlinClosure0({  ->
+            val report_path = System.getenv("GITHUB_STEP_SUMMARY") ?: "local_report.md"
+            val file = File(report_path)
+            if(file.exists()) {
+                file.delete();
+            }
+        }))
+
+        afterTest(KotlinClosure2({ testDescriptor: TestDescriptor, result: TestResult ->
+            // https://docs.gradle.org/current/javadoc/org/gradle/api/tasks/testing/TestResult.html$
+            // https://docs.gradle.org/current/javadoc/org/gradle/api/tasks/testing/TestFailure.html
+            if (result.getResultType() == ResultType.FAILURE) {
+                val report_path = System.getenv("GITHUB_STEP_SUMMARY") ?: "local_report.md"
+                var report = File(report_path)
+                var test_name = testDescriptor.getName()
+                report.appendText("\n\n#### ${testDescriptor}\n\n")
+
+                for (failure in result.getFailures()) {
+                    report.appendText("<details>\n")
+                    report.appendText("<summary>${failure.getDetails().getMessage() ?: ""}</summary>\n\n")
+                    report.appendText("\n\n```java\n")
+                    report.appendText(failure.getDetails().getStacktrace() ?: "")
+                    report.appendText("\n```\n")
+                    report.appendText("\n</details>\n\n")
+
+                }
+            }
+        }))
+
+        afterSuite(KotlinClosure2({ desc: TestDescriptor, result: TestResult ->
+            if (desc.parent == null) { // will match the outermost suite
+                val report_path = System.getenv("GITHUB_STEP_SUMMARY") ?: "local_report.md"
+                val report_content = if (File(report_path).exists()) File(report_path).readText() else ""
+                FileWriter(report_path).use {
+                    it.write("### Gradle Test report\n")
+                    it.write("Test results: ${result.resultType}\n")
+                    it.write("\n| Status |Count |")
+                    it.write("\n| :---: | :---: |")
+                    it.write("\n| Successful | ${result.successfulTestCount} |")
+                    it.write("\n| Failed | ${result.failedTestCount} |")
+                    it.write("\n| Skipped | ${result.skippedTestCount} |")
+                    it.write("\n| Skipped | ${result.skippedTestCount} |\n\n")
+                    it.write(report_content)
+                }
+                                
+            }
+        }))
     }
 
     create<TestReport>("testReport") {
@@ -364,11 +426,3 @@ tasks {
 }
 
 defaultTasks("bootRun")
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