1 files changed, 36 insertions, 0 deletions
diff --git a/cli/tests/057_revoke_permissions.ts b/cli/tests/057_revoke_permissions.ts
new file mode 100644
index 000000000..4481dbfd9
--- /dev/null
+++ b/cli/tests/057_revoke_permissions.ts
@@ -0,0 +1,36 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+const knownPermissions: Deno.PermissionName[] = [
+  "run",
+  "read",
+  "write",
+  "net",
+  "env",
+  "plugin",
+  "hrtime"
+];
+
+export function assert(cond: unknown): asserts cond {
+  if (!cond) {
+    throw Error("Assertion failed");
+  }
+}
+
+function genFunc(grant: Deno.PermissionName): () => Promise<void> {
+  const gen: () => Promise<void> = async function Granted(): Promise<void> {
+    const status0 = await Deno.permissions.query({ name: grant });
+    assert(status0 != null);
+    assert(status0.state === "granted");
+
+    const status1 = await Deno.permissions.revoke({ name: grant });
+    assert(status1 != null);
+    assert(status1.state === "prompt");
+  };
+  // Properly name these generated functions.
+  Object.defineProperty(gen, "name", { value: grant + "Granted" });
+  return gen;
+}
+
+for (const grant of knownPermissions) {
+  Deno.test(genFunc(grant));
+}