chore: add lint rules, fix script\configs

web/eslint-plugins/__tests__/ascii-only.test.ts

@@ -0,0 +1,79 @@
+// Tests for the conventions/ascii-only rule
+// (web/eslint-plugins/conventions/ascii-only.js).
+//
+// Pure file-content check, no filesystem: standard RuleTester with the
+// tseslint parser. The scoping to test files lives in eslint.config.js, so
+// filenames here are arbitrary.
+import { RuleTester } from "eslint";
+import tseslint from "typescript-eslint";
+import { describe, it } from "vitest";
+import asciiOnly from "../conventions/ascii-only.js";
+import { asRuleModule } from "./helpers.js";
+
+RuleTester.describe = describe;
+RuleTester.it = it;
+
+const tester = new RuleTester({
+	languageOptions: {
+		parser: tseslint.parser,
+	},
+});
+
+tester.run("ascii-only", asRuleModule(asciiOnly), {
+	valid: [
+		{ code: "const x = 1;", filename: "a.test.ts" },
+		{
+			code: "describe('resize pipeline', () => {});",
+			filename: "a.test.ts",
+		},
+		{
+			// Glyphs listed in allowChars pass.
+			code: "expect(label).toBe('512×512');",
+			filename: "a.test.ts",
+			options: [{ allowChars: ["×"] }],
+		},
+	],
+	invalid: [
+		{
+			code: "it('ресайзит картинку', () => {});",
+			filename: "a.test.ts",
+			errors: [{ messageId: "nonAscii" }],
+		},
+		{
+			code: "// arrow → here\nconst x = 1;",
+			filename: "a.test.ts",
+			errors: [{ messageId: "nonAscii" }],
+		},
+		{
+			// Em dash and ellipsis on one line collapse to a single report.
+			code: "it('a — b … c', () => {});",
+			filename: "a.test.ts",
+			errors: [{ messageId: "nonAscii" }],
+		},
+		{
+			// Two offending lines produce two reports.
+			code: "// über\n// café\nconst x = 1;",
+			filename: "a.test.ts",
+			errors: [{ messageId: "nonAscii" }, { messageId: "nonAscii" }],
+		},
+		{
+			// allowChars does not whitelist other glyphs on the same line.
+			code: "expect(s).toBe('512×512 → done');",
+			filename: "a.test.ts",
+			options: [{ allowChars: ["×"] }],
+			errors: [{ messageId: "nonAscii" }],
+		},
+		{
+			// Control characters (here: vertical tab) are not printable ASCII.
+			code: "const s = '\x0B';",
+			filename: "a.test.ts",
+			errors: [{ messageId: "nonAscii" }],
+		},
+		{
+			// DEL (U+007F) is not printable either.
+			code: "const s = '\x7F';",
+			filename: "a.test.ts",
+			errors: [{ messageId: "nonAscii" }],
+		},
+	],
+});