Add more Ktlint EditorConfig test cases

Author: Goooler

plugin-gradle/src/test/java/com/diffplug/gradle/spotless/KotlinExtensionTest.java

@@ -105,6 +105,42 @@ void testWithInvalidEditorConfigFile() throws IOException {
 		assertThat(buildOutput).contains(invalidPath);
 	}
 
+	@Test
+	void testReadCodeStyleFromEditorConfigFile() throws IOException {
+		setFile(".editorconfig").toResource("kotlin/ktlint/ktlint_official/.editorconfig");
+		setFile("build.gradle").toLines(
+				"plugins {",
+				"    id 'org.jetbrains.kotlin.jvm' version '1.5.31'",
+				"    id 'com.diffplug.spotless'",
+				"}",
+				"repositories { mavenCentral() }",
+				"spotless {",
+				"    kotlin {",
+				"        ktlint()",
+				"    }",
+				"}");
+		checkKtlintOfficialStyle();
+	}
+
+	@Test
+	void testSetEditorConfigCanOverrideEditorConfigFile() throws IOException {
+		setFile(".editorconfig").toResource("kotlin/ktlint/intellij_idea/.editorconfig");
+		setFile("build.gradle").toLines(
+				"plugins {",
+				"    id 'org.jetbrains.kotlin.jvm' version '1.5.31'",
+				"    id 'com.diffplug.spotless'",
+				"}",
+				"repositories { mavenCentral() }",
+				"spotless {",
+				"    kotlin {",
+				"        ktlint().editorConfigOverride([",
+				"            ktlint_code_style: \"ktlint_official\",",
+				"        ])",
+				"    }",
+				"}");
+		checkKtlintOfficialStyle();
+	}
+
 	@Test
 	void testWithHeader() throws IOException {
 		setFile("build.gradle").toLines(
@@ -144,4 +180,11 @@ void testWithCustomMaxWidthDefaultStyleKtfmt() throws IOException {
 		gradleRunner().withArguments("spotlessApply").build();
 		assertFile("src/main/kotlin/max-width.kt").sameAsResource("kotlin/ktfmt/max-width.clean");
 	}
+
+	private void checkKtlintOfficialStyle() throws IOException {
+		String path = "src/main/kotlin/Main.kt";
+		setFile(path).toResource("kotlin/ktlint/experimentalEditorConfigOverride.dirty");
+		gradleRunner().withArguments("spotlessApply").build();
+		assertFile(path).sameAsResource("kotlin/ktlint/experimentalEditorConfigOverride.ktlintOfficial.clean");
+	}
 }

plugin-maven/src/test/java/com/diffplug/spotless/maven/kotlin/KtlintTest.java

@@ -44,4 +44,29 @@ void testKtlintEditorConfigOverride() throws Exception {
 		mavenRunner().withArguments("spotless:apply").runNoError();
 		assertFile(path).sameAsResource("kotlin/ktlint/experimentalEditorConfigOverride.clean");
 	}
+
+	@Test
+	void testReadCodeStyleFromEditorConfigFile() throws Exception {
+		setFile(".editorconfig").toResource("kotlin/ktlint/ktlint_official/.editorconfig");
+		writePomWithKotlinSteps("<ktlint/>");
+		checkKtlintOfficialStyle();
+	}
+
+	@Test
+	void testSetEditorConfigCanOverrideEditorConfigFile() throws Exception {
+		setFile(".editorconfig").toResource("kotlin/ktlint/intellij_idea/.editorconfig");
+		writePomWithKotlinSteps("<ktlint>\n" +
+				"  <editorConfigOverride>\n" +
+				"    <ktlint_code_style>ktlint_official</ktlint_code_style>\n" +
+				"  </editorConfigOverride>\n" +
+				"</ktlint>");
+		checkKtlintOfficialStyle();
+	}
+
+	private void checkKtlintOfficialStyle() throws Exception {
+		String path = "src/main/kotlin/Main.kt";
+		setFile(path).toResource("kotlin/ktlint/experimentalEditorConfigOverride.dirty");
+		mavenRunner().withArguments("spotless:apply").runNoError();
+		assertFile(path).sameAsResource("kotlin/ktlint/experimentalEditorConfigOverride.ktlintOfficial.clean");
+	}
 }

testlib/src/main/resources/kotlin/ktlint/experimentalEditorConfigOverride.ktlintOfficial.clean

@@ -0,0 +1,6 @@
+fun main() {
+    val list =
+        listOf(
+            "hello",
+        )
+}

testlib/src/main/resources/kotlin/ktlint/intellij_idea/.editorconfig

@@ -0,0 +1,6 @@
+root = true
+
+[*.{kt,kts}]
+ij_kotlin_allow_trailing_comma = true
+ij_kotlin_allow_trailing_comma_on_call_site = true
+ktlint_code_style = intellij_idea

testlib/src/main/resources/kotlin/ktlint/ktlint_official/.editorconfig

@@ -0,0 +1,6 @@
+root = true
+
+[*.{kt,kts}]
+ij_kotlin_allow_trailing_comma = true
+ij_kotlin_allow_trailing_comma_on_call_site = true
+ktlint_code_style = ktlint_official