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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/for-of/semantics-09.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/for-of/semantics-09.js')
-rw-r--r-- | js/src/jit-test/tests/for-of/semantics-09.js | 25 |
1 files changed, 25 insertions, 0 deletions
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'); |