diff --git a/lib/src/main/java/com/diffplug/spotless/FileSignature.java b/lib/src/main/java/com/diffplug/spotless/FileSignature.java
index 3d37ec2983..0d26d86ff8 100644
--- a/lib/src/main/java/com/diffplug/spotless/FileSignature.java
+++ b/lib/src/main/java/com/diffplug/spotless/FileSignature.java
@@ -126,7 +126,7 @@ public static Promised promise(Iterable<File> files) {
 	}
 
 	public static Promised promise(File file) {
-		return new Promised(List.of(file), null);
+		return new Promised(MoreIterables.toNullHostileList(List.of(file)), null);
 	}
 
 	/** Returns all of the files in this signature, throwing an exception if there are more or less than 1 file. */
diff --git a/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NativeCmdIntegrationTest.java b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NativeCmdIntegrationTest.java
index a4f8d6205c..418bded954 100644
--- a/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NativeCmdIntegrationTest.java
+++ b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NativeCmdIntegrationTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 DiffPlug
+ * Copyright 2024 DiffPlug
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,26 +20,40 @@
 import java.io.File;
 import java.io.IOException;
 
+import org.gradle.testkit.runner.GradleRunner;
 import org.junit.jupiter.api.Test;
 
-class NativeCmdIntegrationTest extends GradleIntegrationHarness {
+interface NativeCmdIntegrationTest {
 	@Test
-	void nativeCmd() throws IOException {
+	default void nativeCmd() throws IOException {
 		// This will only work if /usr/bin/sed is available
 		assumeThat(new File("/usr/bin/sed")).exists();
 
-		setFile("build.gradle").toLines(
+		GradleIntegrationHarness harness = (GradleIntegrationHarness) this;
+		harness.setFile("build.gradle").toLines(
 				"plugins {",
 				"  id 'com.diffplug.spotless'",
 				"}",
 				"spotless {",
+				"  lineEndings 'UNIX'",
 				"  format 'test', {",
-				"    target '**/*.txt'",
+				"    target '*.txt'",
 				"    nativeCmd('sed', '/usr/bin/sed', ['s/placeholder/replaced/g'])",
 				"  }",
 				"}");
-		setFile("test.txt").toResource("native_cmd/dirty.txt");
-		gradleRunner().withArguments("spotlessApply").build();
-		assertFile("test.txt").sameAsResource("native_cmd/clean.txt");
+		harness.setFile("test.txt").toResource("native_cmd/dirty.txt");
+		harness.gradleRunner().withArguments("spotlessApply", "--stacktrace").build();
+		harness.assertFile("test.txt").sameAsResource("native_cmd/clean.txt");
+	}
+
+	class NativeCmdWithoutConfigCacheTest extends GradleIntegrationHarness implements NativeCmdIntegrationTest {}
+
+	class NativeCmdWithConfigCacheTest extends GradleIntegrationHarness implements NativeCmdIntegrationTest {
+		@Override
+		public GradleRunner gradleRunner() throws IOException {
+			setFile("gradle.properties").toContent("org.gradle.unsafe.configuration-cache=true");
+			setFile("gradle.properties").toContent("org.gradle.configuration-cache=true");
+			return super.gradleRunner().withGradleVersion(GradleVersionSupport.CONFIGURATION_CACHE.version);
+		}
 	}
 }
diff --git a/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NpmTestsWithoutNpmInstallationTest.java b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NpmTestsWithoutNpmInstallationTest.java
index 50ea620778..22fe466dbe 100644
--- a/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NpmTestsWithoutNpmInstallationTest.java
+++ b/plugin-gradle/src/test/java/com/diffplug/gradle/spotless/NpmTestsWithoutNpmInstallationTest.java
@@ -17,12 +17,10 @@
 
 import org.assertj.core.api.Assertions;
 import org.gradle.testkit.runner.BuildResult;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import com.diffplug.common.base.Predicates;
 
-@Disabled("https://status.npmjs.org/ shows npm services down on 12/8/2024, should undisable this later")
 class NpmTestsWithoutNpmInstallationTest extends GradleIntegrationHarness {
 
 	@Test