Chore: add utils for rule tests (#11453)

tests/lib/rules/_utils.js

@@ -0,0 +1,25 @@
+/**
+ * @fileoverview uitls for rule tests.
+ * @author 唯然<weiran.zsd@outlook.com>
+ */
+
+"use strict";
+
+/**
+ * Prevents leading spaces in a multiline template literal from appearing in the resulting string
+ * @param {string[]} strings The strings in the template literal
+ * @returns {string} The template literal, with spaces removed from all lines
+ */
+function unIndent(strings) {
+    const templateValue = strings[0];
+    const lines = templateValue.replace(/^\n/u, "").replace(/\n\s*$/u, "").split("\n");
+    const lineIndents = lines.filter(line => line.trim()).map(line => line.match(/ */u)[0].length);
+    const minLineIndent = Math.min(...lineIndents);
+
+    return lines.map(line => line.slice(minLineIndent)).join("\n");
+}
+
+
+module.exports = {
+    unIndent
+};

tests/lib/rules/indent.js

@@ -21,6 +21,8 @@ const path = require("path");
 const fixture = fs.readFileSync(path.join(__dirname, "../../fixtures/rules/indent/indent-invalid-fixture-1.js"), "utf8");
 const fixedFixture = fs.readFileSync(path.join(__dirname, "../../fixtures/rules/indent/indent-valid-fixture-1.js"), "utf8");
 const parser = require("../../fixtures/fixture-parser");
+const { unIndent } = require("./_utils");
+
 
 /**
  * Create error message object for failure cases with a single 'found' indentation type
@@ -54,20 +56,6 @@ function expectedErrors(providedIndentType, providedErrors) {
     }));
 }
 
-/**
- * Prevents leading spaces in a multiline template literal from appearing in the resulting string
- * @param {string[]} strings The strings in the template literal
- * @returns {string} The template literal, with spaces removed from all lines
- */
-function unIndent(strings) {
-    const templateValue = strings[0];
-    const lines = templateValue.replace(/^\n/u, "").replace(/\n\s*$/u, "").split("\n");
-    const lineIndents = lines.filter(line => line.trim()).map(line => line.match(/ */u)[0].length);
-    const minLineIndent = Math.min(...lineIndents);
-
-    return lines.map(line => line.slice(minLineIndent)).join("\n");
-}
-
 const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 8, ecmaFeatures: { jsx: true } } });
 
 ruleTester.run("indent", rule, {