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-rw-r--r--js/src/jit-test/tests/basic/spread-call.js110
1 files changed, 110 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/spread-call.js b/js/src/jit-test/tests/basic/spread-call.js
new file mode 100644
index 000000000..927c6d0f4
--- /dev/null
+++ b/js/src/jit-test/tests/basic/spread-call.js
@@ -0,0 +1,110 @@
+load(libdir + "asserts.js");
+load(libdir + "eqArrayHelper.js");
+load(libdir + "iteration.js");
+
+let makeCall = farg => Function("f", "arg", "return f(" + farg + ");");
+let makeFunCall = farg => Function("f", "arg", "return f.call(null, " + farg + ");");
+let makeNew = farg => Function("f", "arg", "return new f(" + farg + ").value;");
+
+function checkCommon(f, makeFn) {
+ assertEqArray(makeFn("...[1, 2, 3]")(f), [1, 2, 3]);
+ assertEqArray(makeFn("1, ...[2], 3")(f), [1, 2, 3]);
+ assertEqArray(makeFn("1, ...[2], ...[3]")(f), [1, 2, 3]);
+ assertEqArray(makeFn("1, ...[2, 3]")(f), [1, 2, 3]);
+ assertEqArray(makeFn("1, ...[], 2, 3")(f), [1, 2, 3]);
+
+ // other iterable objects
+ assertEqArray(makeFn("...arg")(f, new Int32Array([1, 2, 3])), [1, 2, 3]);
+ assertEqArray(makeFn("...arg")(f, "abc"), ["a", "b", "c"]);
+ assertEqArray(makeFn("...arg")(f, [1, 2, 3][Symbol.iterator]()), [1, 2, 3]);
+ assertEqArray(makeFn("...arg")(f, new Set([1, 2, 3])), [1, 2, 3]);
+ assertEqArray(makeFn("...arg")(f, new Map([["a", "A"], ["b", "B"], ["c", "C"]])).map(([k, v]) => k + v), ["aA", "bB", "cC"]);
+ let itr = {};
+ itr[Symbol.iterator] = function() {
+ return {
+ i: 1,
+ next: function() {
+ if (this.i < 4)
+ return { value: this.i++, done: false };
+ else
+ return { value: undefined, done: true };
+ }
+ };
+ };
+ assertEqArray(makeFn("...arg")(f, itr), [1, 2, 3]);
+ function gen() {
+ for (let i = 1; i < 4; i ++)
+ yield i;
+ }
+ assertEqArray(makeFn("...arg")(f, gen()), [1, 2, 3]);
+
+ assertEqArray(makeFn("...arg=[1, 2, 3]")(f), [1, 2, 3]);
+
+ // 12.2.4.1.2 Runtime Semantics: ArrayAccumulation
+ // If Type(spreadObj) is not Object, then throw a TypeError exception.
+ assertThrowsInstanceOf(makeFn("1, ...null, 2, 3"), TypeError);
+ assertThrowsInstanceOf(makeFn("1, ...undefined, 2, 3"), TypeError);
+}
+
+function checkNormal(f, makeFn) {
+ checkCommon(f, makeFn);
+
+ assertEqArray(makeFn("...[]")(f), [undefined, undefined, undefined]);
+ assertEqArray(makeFn("...[1]")(f), [1, undefined, undefined]);
+ assertEqArray(makeFn("...[1, 2]")(f), [1, 2, undefined]);
+ assertEqArray(makeFn("...[1, 2, 3, 4]")(f), [1, 2, 3]);
+
+ assertEqArray(makeFn("...[undefined]")(f), [undefined, undefined, undefined]);
+}
+
+checkNormal(function(a, b, c) [a, b, c], makeCall);
+checkNormal(function(a, b, c) [a, b, c], makeFunCall);
+checkNormal((a, b, c) => [a, b, c], makeCall);
+checkNormal((a, b, c) => [a, b, c], makeFunCall);
+function normalClass(a, b, c) {
+ this.value = [a, b, c];
+ assertEq(Object.getPrototypeOf(this), normalClass.prototype);
+}
+checkNormal(normalClass, makeNew);
+
+function checkDefault(f, makeFn) {
+ checkCommon(f, makeFn);
+
+ assertEqArray(makeFn("...[]")(f), [-1, -2, -3]);
+ assertEqArray(makeFn("...[1]")(f), [1, -2, -3]);
+ assertEqArray(makeFn("...[1, 2]")(f), [1, 2, -3]);
+ assertEqArray(makeFn("...[1, 2, 3, 4]")(f), [1, 2, 3]);
+
+ assertEqArray(makeFn("...[undefined]")(f), [-1, -2, -3]);
+}
+
+checkDefault(function(a = -1, b = -2, c = -3) [a, b, c], makeCall);
+checkDefault(function(a = -1, b = -2, c = -3) [a, b, c], makeFunCall);
+checkDefault((a = -1, b = -2, c = -3) => [a, b, c], makeCall);
+checkDefault((a = -1, b = -2, c = -3) => [a, b, c], makeFunCall);
+function defaultClass(a = -1, b = -2, c = -3) {
+ this.value = [a, b, c];
+ assertEq(Object.getPrototypeOf(this), defaultClass.prototype);
+}
+checkDefault(defaultClass, makeNew);
+
+function checkRest(f, makeFn) {
+ checkCommon(f, makeFn);
+
+ assertEqArray(makeFn("...[]")(f), []);
+ assertEqArray(makeFn("1, ...[2, 3, 4], 5")(f), [1, 2, 3, 4, 5]);
+ assertEqArray(makeFn("1, ...[], 2")(f), [1, 2]);
+ assertEqArray(makeFn("1, ...[2, 3], 4, ...[5, 6]")(f), [1, 2, 3, 4, 5, 6]);
+
+ assertEqArray(makeFn("...[undefined]")(f), [undefined]);
+}
+
+checkRest(function(...x) x, makeCall);
+checkRest(function(...x) x, makeFunCall);
+checkRest((...x) => x, makeCall);
+checkRest((...x) => x, makeFunCall);
+function restClass(...x) {
+ this.value = x;
+ assertEq(Object.getPrototypeOf(this), restClass.prototype);
+}
+checkRest(restClass, makeNew);