From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- js/src/jit-test/tests/for-of/semantics-09.js | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 js/src/jit-test/tests/for-of/semantics-09.js (limited to 'js/src/jit-test/tests/for-of/semantics-09.js') diff --git a/js/src/jit-test/tests/for-of/semantics-09.js b/js/src/jit-test/tests/for-of/semantics-09.js new file mode 100644 index 0000000000..3efa0b3a9f --- /dev/null +++ b/js/src/jit-test/tests/for-of/semantics-09.js @@ -0,0 +1,25 @@ +// The LHS of a for-of loop is not evaluated until after the .next() method returns. + +var s; +function f() { + s += 'f'; + return {}; +} + +// Test 1: .next() throws StopIteration right away. f is never called. +s = ''; +for (f().x of []) + s += '.'; +assertEq(s, ''); + +// Test 2: check proper interleaving of f calls, iterator.next() calls, and the loop body. +function* g() { + s += 'g'; + yield 0; + s += 'g'; + yield 1; + s += 'g'; +} +for (f().x of g()) + s += '.'; +assertEq(s, 'gf.gf.g'); -- cgit v1.2.3