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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/cacheir/string-at-rope.js
parentInitial commit. (diff)
downloadfirefox-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/cacheir/string-at-rope.js')
-rw-r--r--js/src/jit-test/tests/cacheir/string-at-rope.js80
1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/string-at-rope.js b/js/src/jit-test/tests/cacheir/string-at-rope.js
new file mode 100644
index 0000000000..aa41fa1440
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/string-at-rope.js
@@ -0,0 +1,80 @@
+function makeRope() {
+ var left = newRope("@ABCDEFGHIJKLMNO", "PQRSTUVWXYZ[\\]^_");
+ var right = newRope("`abcdefghijklmno", "pqrstuvwxyz{|}~");
+ var rope = newRope(left, right);
+ return {left, right, rope};
+}
+
+// Load a character from the left rope child using a constant index. The input
+// to String.prototype.at is always rope.
+function testLeftChildConstant() {
+ for (var i = 0; i < 200; ++i) {
+ var {rope} = makeRope();
+
+ var ch = rope.at(0);
+ assertEq(ch, "@");
+ }
+}
+for (var i = 0; i < 2; ++i) {
+ testLeftChildConstant();
+}
+
+// Load a character from the right rope child using a constant index. The input
+// to String.prototype.at is always rope.
+function testRightChildConstant() {
+ for (var i = 0; i < 200; ++i) {
+ var {rope} = makeRope();
+
+ var ch = rope.at(32);
+ assertEq(ch, "`");
+ }
+}
+for (var i = 0; i < 2; ++i) {
+ testRightChildConstant();
+}
+
+// Load a character from the left rope child using a variable index. The input
+// to String.prototype.at is always rope.
+function testLeftChildVariable() {
+ for (var i = 0; i < 200; ++i) {
+ var {left, rope} = makeRope();
+
+ var idx = i % left.length;
+ var ch = rope.at(idx);
+ assertEq(ch, String.fromCharCode(0x40 + idx));
+ }
+}
+for (var i = 0; i < 2; ++i) {
+ testLeftChildVariable();
+}
+
+// Load a character from the right rope child using a variable index. The input
+// to String.prototype.at is always rope.
+function testRightChildVariable() {
+ for (var i = 0; i < 200; ++i) {
+ var {left, right, rope} = makeRope();
+
+ var idx = i % right.length;
+ var ch = rope.at(left.length + idx);
+ assertEq(ch, String.fromCharCode(0x60 + idx));
+ }
+}
+for (var i = 0; i < 2; ++i) {
+ testRightChildVariable();
+}
+
+// Load all characters from both child ropes. This covers the case when the
+// call to String.prototype.at linearizes the rope.
+function testBothChildren() {
+ for (var i = 0; i < 200; ++i) {
+ var {rope} = makeRope();
+
+ for (var j = 0; j < rope.length; ++j) {
+ var ch = rope.at(j);
+ assertEq(ch, String.fromCharCode(0x40 + j));
+ }
+ }
+}
+for (var i = 0; i < 2; ++i) {
+ testBothChildren();
+}