From 73ad8ff14cdeb5e08bf077bb56dfc78563883c13 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Sun, 18 Aug 2019 18:07:41 +0200
Subject: [PATCH 1/2] add global test registry

---
 testing/mod.ts | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/testing/mod.ts b/testing/mod.ts
index d1ddb9c8ce7b..9eb721d4fd36 100644
--- a/testing/mod.ts
+++ b/testing/mod.ts
@@ -69,8 +69,19 @@ function print(txt: string, newline: boolean = true): void {
   Deno.stdout.writeSync(encoder.encode(`${txt}`));
 }
 
+declare global {
+  interface Window {
+    __DENO_TEST_REGISTRY: TestDefinition[];
+  }
+}
+
+let candidates: TestDefinition[] = [];
+if (window["__DENO_TEST_REGISTRY"]) {
+  candidates = window.__DENO_TEST_REGISTRY as TestDefinition[];
+} else {
+  window["__DENO_TEST_REGISTRY"] = candidates;
+}
 let filterRegExp: RegExp | null;
-const candidates: TestDefinition[] = [];
 let filtered = 0;
 
 // Must be called before any test() that needs to be filtered.

From 300d14f61793d58f72b1bfc9cd32c42198a0b587 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Sun, 18 Aug 2019 19:04:55 +0200
Subject: [PATCH 2/2] add JsDoc to __DENO_TEST_REGISTRY

---
 testing/mod.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/testing/mod.ts b/testing/mod.ts
index 9eb721d4fd36..51fa62cea60f 100644
--- a/testing/mod.ts
+++ b/testing/mod.ts
@@ -71,6 +71,16 @@ function print(txt: string, newline: boolean = true): void {
 
 declare global {
   interface Window {
+    /**
+     * A global property to collect all registered test cases.
+     *
+     * It is required because user's code can import multiple versions
+     * of `testing` module.
+     *
+     * If test cases aren't registered in a globally shared
+     * object, then imports from different versions would register test cases
+     * to registry from it's respective version of `testing` module.
+     */
     __DENO_TEST_REGISTRY: TestDefinition[];
   }
 }