Add test

ahejlsberg · ahejlsberg · commit e9858de363e2 · 2016-10-11T10:28:13.000-07:00
diff --git a/tests/cases/compiler/controlFlowArrays.ts b/tests/cases/compiler/controlFlowArrays.ts
@@ -147,4 +147,13 @@ function f15() {
         x.push("hello");
     }
     return x;  // string[]
+}
+
+function f16() {
+    let x;
+    let y;
+    (x = [], x).push(5);
+    (x.push("hello"), x).push(true);
+    ((x))[3] = { a: 1 };
+    return x;  // (string | number | boolean | { a: number })[]
 }

Original file line number	Diff line number	Diff line change
`@@ -147,4 +147,13 @@ function f15() {`
`147`	`147`	`x.push("hello");`
`148`	`148`	`}`
`149`	`149`	`return x; // string[]`
	`150`	`+}`
	`151`	`+`
	`152`	`+function f16() {`
	`153`	`+ let x;`
	`154`	`+ let y;`
	`155`	`+ (x = [], x).push(5);`
	`156`	`+ (x.push("hello"), x).push(true);`
	`157`	`+ ((x))[3] = { a: 1 };`
	`158`	`+ return x; // (string \| number \| boolean \| { a: number })[]`
`150`	`159`	`}`