block-let-declaration.js revision 85b71799222b55eb5dd74ea26efe0c64ab655c8c 
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27
28// Flags: --harmony-block-scoping
29
30// Test let declarations in various settings.
31
32// Global
33let x;
34let y = 2;
35
36// Block local
37{
38  let y;
39  let x = 3;
40}
41
42assertEquals(undefined, x);
43assertEquals(2,y);
44
45if (true) {
46  let y;
47  assertEquals(undefined, y);
48}
49
50function TestLocalThrows(str, expect) {
51  assertThrows("(function(){" + str + "})()", expect);
52}
53
54function TestLocalDoesNotThrow(str) {
55  assertDoesNotThrow("(function(){" + str + "})()");
56}
57
58// Unprotected statement
59TestLocalThrows("if (true) let x;", SyntaxError);
60TestLocalThrows("do let x; while (false)", SyntaxError);
61TestLocalThrows("while (false) let x;", SyntaxError);
62
63TestLocalDoesNotThrow("if (true) var x;");
64TestLocalDoesNotThrow("do var x; while (false)");
65TestLocalDoesNotThrow("while (false) var x;");
66