fix(export): persist macos destination volume identity

apps/desktop/src/components/export/__tests__/DatabaseExportDialog.destinationIdentity.spec.ts

@@ -0,0 +1,36 @@
+import { readFileSync } from "node:fs";
+import { describe, expect, it } from "vitest";
+
+const dialogSource = readFileSync(new URL("../DatabaseExportDialog.vue", import.meta.url), "utf8");
+
+function functionSource(name: string, nextName: string) {
+  const start = dialogSource.indexOf(`async function ${name}(`);
+  const end = dialogSource.indexOf(`async function ${nextName}(`, start);
+  expect(start).toBeGreaterThanOrEqual(0);
+  expect(end).toBeGreaterThan(start);
+  return dialogSource.slice(start, end);
+}
+
+describe("DatabaseExportDialog destination identity", () => {
+  it("records a manually selected file destination before starting a single-database export", () => {
+    const source = functionSource("startExport", "startAllDatabasesExport");
+    const selectedPath = source.indexOf("const path = await save(");
+    const recordedDestination = source.indexOf("recordDatabaseExportDestination(await dirname(path))");
+    const exportStarted = source.indexOf("isExporting.value = true");
+
+    expect(selectedPath).toBeGreaterThanOrEqual(0);
+    expect(recordedDestination).toBeGreaterThan(selectedPath);
+    expect(exportStarted).toBeGreaterThan(recordedDestination);
+  });
+
+  it("records a manually selected directory before starting an all-databases export", () => {
+    const source = functionSource("startAllDatabasesExport", "cancelExport");
+    const selectedPath = source.indexOf("const path = await openDialog(");
+    const recordedDestination = source.indexOf("recordDatabaseExportDestination(path)");
+    const exportStarted = source.indexOf("isExporting.value = true");
+
+    expect(selectedPath).toBeGreaterThanOrEqual(0);
+    expect(recordedDestination).toBeGreaterThan(selectedPath);
+    expect(exportStarted).toBeGreaterThan(recordedDestination);
+  });
+});