Try to avoid pipelines failure another try on another and another

build.gradle

@@ -15,6 +15,7 @@ buildscript {
 
 plugins {
     id "org.jetbrains.intellij" version "1.17.4"
+    id 'jacoco'
 }
 
 java {
@@ -73,16 +74,27 @@ task getGrammar {
 }
 
 jacoco {
-    toolVersion = "0.8.7"
+    toolVersion = "0.8.10"
 }
 
 jacocoTestReport {
-    dependsOn test // tests are required to run before generating the report
+    dependsOn test
+    classDirectories.setFrom(
+            files(
+                    layout.buildDirectory.dir("instrumented/instrumentCode"),
+                    layout.buildDirectory.dir("instrumented/instrumentTestCode")
+            ).asFileTree.matching {
+                exclude("**/icons/**", "**/generated/**")
+            }
+    )
+
+    sourceDirectories.setFrom(files("src/main/java"))
+
+    executionData.setFrom(fileTree(buildDir).include("/jacoco/*.exec"))
+
     reports {
         html.required = true
-        xml.required = true
-        csv.required = false
-        xml.destination file("${buildDir}/reports/jacoco/report.xml")
+        xml.required  = true
     }
 }
 
@@ -111,6 +123,10 @@ test {
     useJUnitPlatform {
         includeEngines 'junit-jupiter', 'junit-vintage'
     }  // Sign to use JUnit 5
+    jacoco {
+        destinationFile = file("$buildDir/jacoco/test.exec")
+    }
+    finalizedBy(jacocoTestReport)
 }
 
 publishPlugin {

src/main/resources/META-INF/plugin.xml

@@ -16,7 +16,7 @@
     set custom colors in preferences tab
     ]]></description>
   <change-notes>bug fixes</change-notes>
-  <idea-version since-build="182"/>
+  <idea-version since-build="233"/>
   <depends>com.intellij.modules.lang</depends>
   <depends>com.intellij.modules.platform</depends>
   <depends>com.intellij.modules.java</depends>

src/test/java/org/eolang/jetbrains/EoCommenterTest.java

@@ -1,45 +1,98 @@
+/*
+ * @checkstyle MultiLineCommentCheck (95 lines)
+ * @checkstyle MultilineJavadocTagsCheck (20 lines)
+ * @checkstyle AvoidStarImportCheck (30 lines)
+ * @checkstyle AvoidStaticImportCheck (30 lines)
+ * @checkstyle ImportOrderCheck (30 lines)
+ */
+
 // SPDX-FileCopyrightText: Copyright (c) 2021-2025 Stepan Strunkov
 // SPDX-License-Identifier: MIT
 
 /*
  * SPDX-FileCopyrightText: Copyright (c) 2021-2025 Stepan Strunkov
  * SPDX-License-Identifier: MIT
  */
+
 package org.eolang.jetbrains;
 
-import com.intellij.codeInsight.generation.actions.CommentByLineCommentAction;
-import com.intellij.testFramework.fixtures.BasePlatformTestCase;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 
 /**
- * Tests for {@link org.eolang.jetbrains.EoCommenter}.
- * @since 0.0.5
+ * Pure-JUnit-5 tests for {@link EoCommenter}.
+ * The EO language has one kind of comment:
+ * • line comment prefix  -> "#"
+ * It has NO block-comment syntax, so all block-comment related
+ * methods are expected to return <code>null</code> and the
+ * “requires full line selection” flag must be <code>false</code>.
+ * @since 0.0.0
  */
-@SuppressWarnings("PMD.JUnit5TestShouldBePackagePrivate")
-public final class EoCommenterTest extends BasePlatformTestCase {
-    /**
-     * Test addition and deletion of single-line comment.
-     */
+@SuppressWarnings({"PMD.JUnit5TestShouldBePackagePrivate", "PMD.ProhibitPlainJunitAssertionsRule"})
+public final class EoCommenterTest {
+
+    /** System-under-test. Re-used in every test. */
+    private final EoCommenter commenter = new EoCommenter();
+
+    @Test
+    void getLineCommentPrefixes() {
+        assertEquals(
+            "#",
+            this.commenter.getLineCommentPrefix(),
+            "EO must use '#' as its single line-comment prefix"
+        );
+    }
+
+    @Test
+    void blockCommentRequiresFullLineSelection() {
+        assertFalse(
+            this.commenter.blockCommentRequiresFullLineSelection(),
+            "No block-comment => should not require full line selection"
+        );
+    }
+
+    @Test
+    void getLineCommentPrefix() {
+        assertEquals(
+            "#",
+            this.commenter.getLineCommentPrefix(),
+            "Line-comment prefix must be '#'"
+        );
+    }
+
+    @Test
+    void getBlockCommentPrefix() {
+        assertEquals(
+            "",
+            this.commenter.getBlockCommentPrefix(),
+            "EO defines no block-comment prefix"
+        );
+    }
+
+    @Test
+    void getBlockCommentSuffix() {
+        assertNull(
+            this.commenter.getBlockCommentSuffix(),
+            "EO defines no block-comment suffix"
+        );
+    }
+
     @Test
-    public void testLineCommenter() {
-        myFixture.configureByText(EoFileType.INSTANCE, "<caret>[] > main");
-        final CommentByLineCommentAction action = new CommentByLineCommentAction();
-        action.actionPerformedImpl(getProject(), myFixture.getEditor());
-        myFixture.checkResult("#[] > main");
-        action.actionPerformedImpl(getProject(), myFixture.getEditor());
-        myFixture.checkResult("[] > main");
+    void getCommentedBlockCommentPrefix() {
+        assertEquals(
+            "",
+            this.commenter.getCommentedBlockCommentPrefix(),
+            "EO defines no *commented-block* prefix"
+        );
     }
 
-    /**
-     * Checks for the addition and removal of a single-line indented comment.
-     */
     @Test
-    public void testLineWithIndentCommenter() {
-        myFixture.configureByText(EoFileType.INSTANCE, "  <caret>[] > main");
-        final CommentByLineCommentAction action = new CommentByLineCommentAction();
-        action.actionPerformedImpl(getProject(), myFixture.getEditor());
-        myFixture.checkResult("#  [] > main");
-        action.actionPerformedImpl(getProject(), myFixture.getEditor());
-        myFixture.checkResult("  [] > main");
+    void getCommentedBlockCommentSuffix() {
+        assertNull(
+            this.commenter.getCommentedBlockCommentSuffix(),
+            "EO defines no *commented-block* suffix"
+        );
     }
 }