From d919f2c113da9a18140577d1278508fe522ba0f7 Mon Sep 17 00:00:00 2001
From: Sheetal Nandi <shkamat@microsoft.com>
Date: Wed, 17 Apr 2019 15:13:09 -0700
Subject: [PATCH] Add test for #28334

---
 ...olAssignmentOnGlobalAugmentationSuceeds.js | 18 ++++++++++++
 ...ignmentOnGlobalAugmentationSuceeds.symbols | 29 +++++++++++++++++++
 ...ssignmentOnGlobalAugmentationSuceeds.types | 28 ++++++++++++++++++
 ...olAssignmentOnGlobalAugmentationSuceeds.ts | 13 +++++++++
 4 files changed, 88 insertions(+)
 create mode 100644 tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.js
 create mode 100644 tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.symbols
 create mode 100644 tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.types
 create mode 100644 tests/cases/compiler/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts

diff --git a/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.js b/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.js
new file mode 100644
index 00000000000..bfb6f0a29c7
--- /dev/null
+++ b/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.js
@@ -0,0 +1,18 @@
+//// [uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts]
+const FOO_SYMBOL = Symbol('Foo');
+
+declare global {
+    interface Promise<T> {
+        [FOO_SYMBOL]?: number;
+    }
+}
+
+export function foo<T>(p: Promise<T>) {
+    p[FOO_SYMBOL] = 3;
+}
+
+//// [uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.js]
+const FOO_SYMBOL = Symbol('Foo');
+export function foo(p) {
+    p[FOO_SYMBOL] = 3;
+}
diff --git a/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.symbols b/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.symbols
new file mode 100644
index 00000000000..17af30e8fac
--- /dev/null
+++ b/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.symbols
@@ -0,0 +1,29 @@
+=== tests/cases/compiler/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts ===
+const FOO_SYMBOL = Symbol('Foo');
+>FOO_SYMBOL : Symbol(FOO_SYMBOL, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 0, 5))
+>Symbol : Symbol(Symbol, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.symbol.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --))
+
+declare global {
+>global : Symbol(global, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 0, 33))
+
+    interface Promise<T> {
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 2, 16))
+>T : Symbol(T, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 3, 22))
+
+        [FOO_SYMBOL]?: number;
+>[FOO_SYMBOL] : Symbol(Promise[FOO_SYMBOL], Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 3, 26))
+>FOO_SYMBOL : Symbol(FOO_SYMBOL, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 0, 5))
+    }
+}
+
+export function foo<T>(p: Promise<T>) {
+>foo : Symbol(foo, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 6, 1))
+>T : Symbol(T, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 8, 20))
+>p : Symbol(p, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 8, 23))
+>Promise : Symbol(Promise, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --), Decl(lib.es2015.promise.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 2, 16))
+>T : Symbol(T, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 8, 20))
+
+    p[FOO_SYMBOL] = 3;
+>p : Symbol(p, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 8, 23))
+>FOO_SYMBOL : Symbol(FOO_SYMBOL, Decl(uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts, 0, 5))
+}
diff --git a/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.types b/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.types
new file mode 100644
index 00000000000..62dcc0607ae
--- /dev/null
+++ b/tests/baselines/reference/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.types
@@ -0,0 +1,28 @@
+=== tests/cases/compiler/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts ===
+const FOO_SYMBOL = Symbol('Foo');
+>FOO_SYMBOL : unique symbol
+>Symbol('Foo') : unique symbol
+>Symbol : SymbolConstructor
+>'Foo' : "Foo"
+
+declare global {
+>global : any
+
+    interface Promise<T> {
+        [FOO_SYMBOL]?: number;
+>[FOO_SYMBOL] : number | undefined
+>FOO_SYMBOL : unique symbol
+    }
+}
+
+export function foo<T>(p: Promise<T>) {
+>foo : <T>(p: Promise<T>) => void
+>p : Promise<T>
+
+    p[FOO_SYMBOL] = 3;
+>p[FOO_SYMBOL] = 3 : 3
+>p[FOO_SYMBOL] : number | undefined
+>p : Promise<T>
+>FOO_SYMBOL : unique symbol
+>3 : 3
+}
diff --git a/tests/cases/compiler/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts b/tests/cases/compiler/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts
new file mode 100644
index 00000000000..f79c2a36e86
--- /dev/null
+++ b/tests/cases/compiler/uniqueSymbolAssignmentOnGlobalAugmentationSuceeds.ts
@@ -0,0 +1,13 @@
+// @strict: true
+// @target: es6
+const FOO_SYMBOL = Symbol('Foo');
+
+declare global {
+    interface Promise<T> {
+        [FOO_SYMBOL]?: number;
+    }
+}
+
+export function foo<T>(p: Promise<T>) {
+    p[FOO_SYMBOL] = 3;
+}
\ No newline at end of file