test: adopt macOS-safe real-Obsidian sessions

test/e2e-obsidian/runner/pathAssertions.ts

@@ -0,0 +1,30 @@
+import { readdir } from "node:fs/promises";
+import { basename, dirname, join } from "node:path";
+import { hasExactCaseOnlyRename } from "./pathEntries.ts";
+
+export async function waitForExactCaseOnlyRename(
+    vaultPath: string,
+    oldPath: string,
+    newPath: string,
+    timeoutMs = Number(process.env.E2E_OBSIDIAN_FILE_TIMEOUT_MS ?? 10000)
+): Promise<void> {
+    const oldDirectory = dirname(oldPath);
+    const newDirectory = dirname(newPath);
+    if (oldDirectory !== newDirectory) {
+        throw new Error(`Case-only rename paths must share one parent directory: ${oldPath} -> ${newPath}`);
+    }
+
+    const oldName = basename(oldPath);
+    const newName = basename(newPath);
+    const directoryPath = join(vaultPath, newDirectory);
+    const deadline = Date.now() + timeoutMs;
+    let lastEntries: string[] = [];
+    while (Date.now() < deadline) {
+        lastEntries = await readdir(directoryPath);
+        if (hasExactCaseOnlyRename(lastEntries, oldName, newName)) return;
+        await new Promise((resolve) => setTimeout(resolve, 250));
+    }
+    throw new Error(
+        `Timed out waiting for exact case-only rename: ${oldPath} -> ${newPath}. Directory entries: ${JSON.stringify(lastEntries)}`
+    );
+}