From 235afbc915fb9b8d2dffe6bb6738c519a0cc746a Mon Sep 17 00:00:00 2001
From: Josh Goldberg <git@joshuakgoldberg.com>
Date: Mon, 17 Feb 2025 09:52:00 -0500
Subject: [PATCH] Add tests for filename with lowercase, uppercase, slashes,
 and spaces

---
 tests/fixtures/filename.md |  5 +++++
 tests/plugin.test.js       | 15 +++++++++++++++
 tests/processor.test.js    | 14 ++++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 tests/fixtures/filename.md

diff --git a/tests/fixtures/filename.md b/tests/fixtures/filename.md
new file mode 100644
index 00000000..239fc891
--- /dev/null
+++ b/tests/fixtures/filename.md
@@ -0,0 +1,5 @@
+# Test
+
+```js filename="a/b/C D E.js"
+console.log("...");
+```
diff --git a/tests/plugin.test.js b/tests/plugin.test.js
index f0865a75..b56a3bc2 100644
--- a/tests/plugin.test.js
+++ b/tests/plugin.test.js
@@ -1436,6 +1436,21 @@ describe("FlatESLint", () => {
 			assert.strictEqual(results[0].messages[4].column, 2);
 		});
 
+		it("parses when file name includes lowercase, uppercase, slashes, and spaces", async () => {
+			const results = await eslint.lintFiles([
+				path.resolve(__dirname, "./fixtures/filename.md"),
+			]);
+
+			assert.strictEqual(results.length, 1);
+			assert.strictEqual(results[0].messages.length, 1);
+			assert.strictEqual(
+				results[0].messages[0].message,
+				"Unexpected console statement.",
+			);
+			assert.strictEqual(results[0].messages[0].line, 4);
+			assert.strictEqual(results[0].messages[0].column, 1);
+		});
+
 		// https://github.com/eslint/markdown/issues/181
 		it("should work when called on nested code blocks in the same file", async () => {
 			/*
diff --git a/tests/processor.test.js b/tests/processor.test.js
index 41e66400..51ee1b81 100644
--- a/tests/processor.test.js
+++ b/tests/processor.test.js
@@ -401,6 +401,20 @@ describe("processor", () => {
 					assert.strictEqual(blocks[0].filename, "abc/def.js");
 				});
 
+				it("should parse a filename with lowercase, uppercase, slashes, and spaces", () => {
+					const code =
+						prefix +
+						[
+							"```  js filename='a/b/C D E.js'",
+							"var answer = 6 * 7;",
+							"```",
+						].join("\n");
+					const blocks = processor.preprocess(code);
+
+					assert.strictEqual(blocks.length, 1);
+					assert.strictEqual(blocks[0].filename, "a/b/C D E.js");
+				});
+
 				it("should parse a filename each from two meta", () => {
 					const code =
 						prefix +