test: preload clipboard mock before shell imports

Author: gingerhendrix

bunfig.toml

@@ -0,0 +1,2 @@
+[test]
+preload = ["./test/setup.ts"]

packages/shell/test/document-copy.test.tsx

@@ -1,8 +1,7 @@
 import { testRender } from "../../../test/support/test-render.ts"
-import { test, expect, afterEach, beforeEach, describe, mock } from "bun:test"
-import { clipboardStub, copied } from "../../../test/support/clipboard-mock.ts"
+import { test, expect, afterEach, beforeEach, describe } from "bun:test"
+import { copied } from "../../../test/support/clipboard-mock.ts"
 
-mock.module("@tooee/clipboard", () => clipboardStub())
 
 const { TooeeProvider, useDocumentController, Document } = await import("@tooee/shell")
 const { press, pressTab } = await import("./support/test-helpers.ts")

packages/view/test/view-search-copy.test.tsx

@@ -1,9 +1,8 @@
 import { testRender } from "../../../test/support/test-render.ts"
-import { test, expect, afterEach, beforeEach, describe, mock } from "bun:test"
+import { test, expect, afterEach, beforeEach, describe } from "bun:test"
 import { act } from "react"
-import { clipboardStub, copied } from "../../../test/support/clipboard-mock.ts"
+import { copied } from "../../../test/support/clipboard-mock.ts"
 
-mock.module("@tooee/clipboard", () => clipboardStub())
 
 const { TooeeProvider } = await import("@tooee/shell")
 const { MarkSetBuilder, MarkPriorities } = await import("@tooee/marks")

test/setup.ts

@@ -0,0 +1,6 @@
+import { mock } from "bun:test"
+import { clipboardStub } from "./support/clipboard-mock.ts"
+
+// Register before any test can load @tooee/shell, whose copy command keeps its
+// imported clipboard binding for the lifetime of the shared Bun test process.
+mock.module("@tooee/clipboard", () => clipboardStub())

test/support/clipboard-mock.ts

@@ -1,18 +1,10 @@
 /**
  * Text handed to `copyToClipboard` since the last `copied.length = 0`.
  *
- * `mock.module` binds the module registry process-wide, and a module already
- * imported keeps the factory that was registered when it first resolved. Two
- * test files stubbing `@tooee/clipboard` therefore cannot each own a private
- * array — whichever registered first keeps receiving the writes. They share
- * this one instead, and each file registers its own stub around it:
- *
- * ```ts
- * mock.module("@tooee/clipboard", () => clipboardStub())
- * ```
- *
- * The `mock.module` call must live in the test file: resolved from here it
- * targets a different module instance than the one under test imports.
+ * Bun shares its module registry across test files, so the suite preload owns
+ * the single process-wide `@tooee/clipboard` mock and all clipboard assertions
+ * share this sink. Registering mocks inside individual files is order-dependent:
+ * `@tooee/shell` may already have captured the production clipboard binding.
  */
 export const copied: string[] = []