From 0fdf898be8a4d8e39423784875a2338c8c0c70ba Mon Sep 17 00:00:00 2001
From: Kris Kowal <kris@agoric.com>
Date: Tue, 25 Jun 2024 18:06:22 -0700
Subject: [PATCH] test: Verify patch for @cosmjs/math

---
 packages/agoric-cli/test/bundle-cosmjs-math.js |  1 +
 .../agoric-cli/test/bundle-cosmjs-math.test.js | 18 ++++++++++++++++++
 packages/cosmic-proto/package.json             |  2 ++
 .../cosmic-proto/test/bundle-cosmjs-math.js    |  1 +
 .../test/bundle-cosmjs-math.test.js            | 18 ++++++++++++++++++
 5 files changed, 40 insertions(+)
 create mode 100644 packages/agoric-cli/test/bundle-cosmjs-math.js
 create mode 100644 packages/agoric-cli/test/bundle-cosmjs-math.test.js
 create mode 100644 packages/cosmic-proto/test/bundle-cosmjs-math.js
 create mode 100644 packages/cosmic-proto/test/bundle-cosmjs-math.test.js

diff --git a/packages/agoric-cli/test/bundle-cosmjs-math.js b/packages/agoric-cli/test/bundle-cosmjs-math.js
new file mode 100644
index 000000000000..7b09232d149c
--- /dev/null
+++ b/packages/agoric-cli/test/bundle-cosmjs-math.js
@@ -0,0 +1 @@
+export { Decimal } from '@cosmjs/math';
diff --git a/packages/agoric-cli/test/bundle-cosmjs-math.test.js b/packages/agoric-cli/test/bundle-cosmjs-math.test.js
new file mode 100644
index 000000000000..557b2894c85c
--- /dev/null
+++ b/packages/agoric-cli/test/bundle-cosmjs-math.test.js
@@ -0,0 +1,18 @@
+// A test to verify that importing @cosmsjs/math into an ESM via bundleSource
+// can see the exported Decimal constructor, which was at time of writing obscured
+// by https://github.com/endojs/endo/pull/2330, temporarily mitigated by a patch.
+// Placed here only because Agoric CLI depends on both bundleSource and CosmJS math.
+
+import test from '@endo/ses-ava/prepare-endo.js';
+import url from 'url';
+import bundleSource from '@endo/bundle-source';
+import { importBundle } from '@endo/import-bundle';
+
+test('bundled @comjs/math exports Decimal', async t => {
+  const entryPath = url.fileURLToPath(
+    new URL('bundle-cosmjs-math.js', import.meta.url),
+  );
+  const bundle = await bundleSource(entryPath);
+  const ns = await importBundle(bundle);
+  t.not(ns.Decimal === undefined);
+});
diff --git a/packages/cosmic-proto/package.json b/packages/cosmic-proto/package.json
index 62f85cd9b4cc..c38417f528c5 100644
--- a/packages/cosmic-proto/package.json
+++ b/packages/cosmic-proto/package.json
@@ -133,6 +133,8 @@
     "@agoric/cosmos": "^0.34.1",
     "@ava/typescript": "^4.1.0",
     "@cosmology/telescope": "^1.7.1",
+    "@endo/bundle-source": "^3.2.3",
+    "@endo/import-bundle": "^1.1.2",
     "ava": "^5.3.1",
     "rimraf": "^5.0.0",
     "tsd": "^0.30.7",
diff --git a/packages/cosmic-proto/test/bundle-cosmjs-math.js b/packages/cosmic-proto/test/bundle-cosmjs-math.js
new file mode 100644
index 000000000000..7b09232d149c
--- /dev/null
+++ b/packages/cosmic-proto/test/bundle-cosmjs-math.js
@@ -0,0 +1 @@
+export { Decimal } from '@cosmjs/math';
diff --git a/packages/cosmic-proto/test/bundle-cosmjs-math.test.js b/packages/cosmic-proto/test/bundle-cosmjs-math.test.js
new file mode 100644
index 000000000000..c8a8d386ab5c
--- /dev/null
+++ b/packages/cosmic-proto/test/bundle-cosmjs-math.test.js
@@ -0,0 +1,18 @@
+// A test to verify that importing @cosmsjs/math into an ESM via bundleSource
+// can see the exported Decimal constructor, which was at time of writing obscured
+// by https://github.com/endojs/endo/pull/2330, temporarily mitigated by a patch.
+// Placed here only because Agoric CLI depends on both bundleSource and CosmJS math.
+
+import test from '@endo/ses-ava/prepare-endo.js';
+import url from 'url';
+import bundleSource from '@endo/bundle-source';
+import { importBundle } from '@endo/import-bundle';
+
+test('bundled @comjs/math exports Decimal', async t => {
+  const entryPath = url.fileURLToPath(
+    new URL('bundle-cosmjs-math.js', import.meta.url),
+  );
+  const bundle = await bundleSource(entryPath);
+  const ns = await importBundle(bundle);
+  t.not(ns.Decimal, undefined);
+});