diff --git a/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/PrettierIntegrationTest.java b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/PrettierIntegrationTest.java
new file mode 100644
index 0000000000..40a2a547e8
--- /dev/null
+++ b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/PrettierIntegrationTest.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2016 DiffPlug
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.diffplug.gradle.spotless;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+@Category(NpmTest.class)
+public class PrettierIntegrationTest extends GradleIntegrationTest {
+	@Test
+	public void useInlineConfig() throws IOException {
+		setFile("build.gradle").toLines(
+				"buildscript { repositories { mavenCentral() } }",
+				"plugins {",
+				"    id 'com.diffplug.gradle.spotless'",
+				"}",
+				"def prettierConfig = [:]",
+				"prettierConfig['printWidth'] = 50",
+				"prettierConfig['parser'] = 'typescript'",
+				"spotless {",
+				"    format 'mytypescript', {",
+				"        target 'test.ts'",
+				"        prettier().config(prettierConfig)",
+				"    }",
+				"}");
+		setFile("test.ts").toResource("npm/prettier/config/typescript.dirty");
+		gradleRunner().withArguments("spotlessApply").build();
+		assertFile("test.ts").sameAsResource("npm/prettier/config/typescript.configfile.clean");
+	}
+
+	@Test
+	public void useFileConfig() throws IOException {
+		File formattingFile = setFile(".prettierrc.yml").toResource("npm/prettier/config/.prettierrc.yml");
+		setFile("build.gradle").toLines(
+				"buildscript { repositories { mavenCentral() } }",
+				"plugins {",
+				"    id 'com.diffplug.gradle.spotless'",
+				"}",
+				"spotless {",
+				"    format 'mytypescript', {",
+				"        target 'test.ts'",
+				"        prettier().configFile('" + formattingFile.getAbsolutePath() + "')",
+				"    }",
+				"}");
+		setFile("test.ts").toResource("npm/prettier/config/typescript.dirty");
+		gradleRunner().withArguments("spotlessApply").build();
+		assertFile("test.ts").sameAsResource("npm/prettier/config/typescript.configfile.clean");
+	}
+
+}