Add missing debug module tests

Author: qwwdfsad

buildSrc/src/main/kotlin/kover-conventions.gradle.kts

@@ -13,8 +13,6 @@ val expectedCoverage = mutableMapOf(
     "kotlinx-coroutines-swing" to 70, // awaitFrame is not tested
     "kotlinx-coroutines-javafx" to 39, // JavaFx is not tested on TC because its graphic subsystem cannot be initialized in headless mode
 
-    // TODO figure it out, these probably should be fixed
-    "kotlinx-coroutines-debug" to 84,
     // Re-evaluate this along with Kover update where deprecated with error+ functions are not considered as uncovered: IDEA-287459
     "kotlinx-coroutines-reactor" to 65,
     "kotlinx-coroutines-rx2" to 78
@@ -29,7 +27,7 @@ extensions.configure<KoverExtension> {
      * ./gradlew :p:check -Pkover.enabled=true -- verifies coverage
      * ./gradlew :p:koverReport -Pkover.enabled=true -- generates report
      */
-    isDisabled = false// !(properties["kover.enabled"]?.toString()?.toBoolean() ?: false)
+    isDisabled = !(properties["kover.enabled"]?.toString()?.toBoolean() ?: false)
 }
 
 subprojects {

kotlinx-coroutines-debug/build.gradle

@@ -51,3 +51,15 @@ shadowJar {
     configurations = [project.configurations.shadowDeps]
     relocate('net.bytebuddy', 'kotlinx.coroutines.repackaged.net.bytebuddy')
 }
+
+def commonKoverExcludes =
+        // Never used, safety mechanism
+        ["kotlinx.coroutines.debug.internal.NoOpProbesKt"]
+
+tasks.koverHtmlReport {
+    excludes = commonKoverExcludes
+}
+
+tasks.koverVerify {
+    excludes = commonKoverExcludes
+}

kotlinx-coroutines-debug/test/ToStringTest.kt

@@ -8,6 +8,7 @@ import kotlinx.coroutines.*
 import kotlinx.coroutines.channels.*
 import org.junit.*
 import org.junit.Test
+import java.io.*
 import kotlin.coroutines.*
 import kotlin.test.*
 
@@ -105,6 +106,8 @@ class ToStringTest : TestBase() {
         expect(6)
         assertEquals(expected, DebugProbes.jobToString(root).trimEnd().trimStackTrace().trimPackage())
         assertEquals(expected, DebugProbes.scopeToString(CoroutineScope(root)).trimEnd().trimStackTrace().trimPackage())
+        assertEquals(expected, printToString { DebugProbes.printScope(CoroutineScope(root), it) }.trimEnd().trimStackTrace().trimPackage())
+        assertEquals(expected, printToString { DebugProbes.printJob(root, it) }.trimEnd().trimStackTrace().trimPackage())
 
         root.cancelAndJoin()
         finish(7)
@@ -145,4 +148,12 @@ class ToStringTest : TestBase() {
             }
         }
     }
+
+    private inline fun printToString(block: (PrintStream) -> Unit): String {
+        val baos = ByteArrayOutputStream()
+        val ps = PrintStream(baos)
+        block(ps)
+        ps.close()
+        return baos.toString()
+    }
 }