test: Add test for include option in banner plugin

test/configCases/plugins/banner-plugin/index.js

@@ -13,11 +13,13 @@ it("should contain banner in bundle0 chunk", () => {
 	expect(source).toMatch(
 		"/*!\n * trim trailing whitespace\n *\n * no trailing whitespace\n */"
 	);
+	expect(source).not.toMatch(new RegExp("^/*! A test value in single file */$"));
 });
 
 it("should not contain banner in vendors chunk", () => {
 	const source = fs.readFileSync(path.join(__dirname, "vendors.js"), "utf-8");
-	expect(source).not.toMatch("A test value");
+	expect(source).not.toMatch("/*! A test value */");
+	expect(source).toMatch("/*! A test value in single file */");
 });
 
 if (Math.random() < 0) require("./test.js");

test/configCases/plugins/banner-plugin/webpack.config.js

@@ -18,6 +18,10 @@ module.exports = {
 			banner: "A test value",
 			exclude: ["vendors.js"]
 		}),
+		new webpack.BannerPlugin({
+			banner: "A test value in single file",
+			include: ["vendors.js"]
+		}),
 		new webpack.BannerPlugin({
 			banner: ({ chunk }) => `multiline\nbanner\n${chunk.name}`
 		}),