Add tests

microsoft · Oct 9, 2019 · f4e78a6 · f4e78a6
1 parent d202b21
commit f4e78a6
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diff --git a/tests/baselines/reference/arrayConcat2.js b/tests/baselines/reference/arrayConcat2.js
@@ -6,6 +6,12 @@ a.concat('Hello');
 
 var b = new Array<string>();
 b.concat('hello');
+
+// #19535
+
+const c: number[][] = [];
+const [x] = c.concat([1]);
+x == 1;
 
 
 //// [arrayConcat2.js]
@@ -14,3 +20,7 @@ a.concat("hello", 'world');
 a.concat('Hello');
 var b = new Array();
 b.concat('hello');
+// #19535
+var c = [];
+var x = c.concat([1])[0];
+x == 1;
diff --git a/tests/baselines/reference/arrayConcat2.symbols b/tests/baselines/reference/arrayConcat2.symbols
@@ -21,3 +21,17 @@ b.concat('hello');
 >b : Symbol(b, Decl(arrayConcat2.ts, 5, 3))
 >concat : Symbol(Array.concat, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
 
+// #19535
+
+const c: number[][] = [];
+>c : Symbol(c, Decl(arrayConcat2.ts, 10, 5))
+
+const [x] = c.concat([1]);
+>x : Symbol(x, Decl(arrayConcat2.ts, 11, 7))
+>c.concat : Symbol(Array.concat, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
+>c : Symbol(c, Decl(arrayConcat2.ts, 10, 5))
+>concat : Symbol(Array.concat, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
+
+x == 1;
+>x : Symbol(x, Decl(arrayConcat2.ts, 11, 7))
+
diff --git a/tests/baselines/reference/arrayConcat2.types b/tests/baselines/reference/arrayConcat2.types
@@ -30,3 +30,23 @@ b.concat('hello');
 >concat : { (...items: ConcatArray<string>[]): string[]; <U extends (string | ConcatArray<string>)[]>(...items: U): (string | ConcatFlatten<U[number]>)[]; }
 >'hello' : "hello"
 
+// #19535
+
+const c: number[][] = [];
+>c : number[][]
+>[] : undefined[]
+
+const [x] = c.concat([1]);
+>x : number | number[]
+>c.concat([1]) : (number | number[])[]
+>c.concat : { (...items: ConcatArray<number[]>[]): number[][]; <U extends (number[] | ConcatArray<number[]>)[]>(...items: U): (number[] | ConcatFlatten<U[number]>)[]; }
+>c : number[][]
+>concat : { (...items: ConcatArray<number[]>[]): number[][]; <U extends (number[] | ConcatArray<number[]>)[]>(...items: U): (number[] | ConcatFlatten<U[number]>)[]; }
+>[1] : number[]
+>1 : 1
+
+x == 1;
+>x == 1 : boolean
+>x : number | number[]
+>1 : 1
+
diff --git a/tests/cases/compiler/arrayConcat2.ts b/tests/cases/compiler/arrayConcat2.ts
@@ -5,3 +5,9 @@ a.concat('Hello');
 
 var b = new Array<string>();
 b.concat('hello');
+
+// #19535
+
+const c: number[][] = [];
+const [x] = c.concat([1]);
+x == 1;