1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
7 #include "test/cctest/compiler/function-tester.h"
9 using namespace v8::internal;
10 using namespace v8::internal::compiler;
12 static const char* throws = NULL;
14 static const char* load_tests[] = {
15 "var x = a; r = x", "123", "0",
16 "var x = (r = x)", "undefined", "undefined",
17 "var x = (a?1:2); r = x", "1", "2",
18 "const x = a; r = x", "123", "0",
19 "const x = (r = x)", "undefined", "undefined",
20 "const x = (a?3:4); r = x", "3", "4",
21 "'use strict'; const x = a; r = x", "123", "0",
22 "'use strict'; const x = (r = x)", throws, throws,
23 "'use strict'; const x = (a?5:6); r = x", "5", "6",
24 "'use strict'; let x = a; r = x", "123", "0",
25 "'use strict'; let x = (r = x)", throws, throws,
26 "'use strict'; let x = (a?7:8); r = x", "7", "8",
29 static const char* store_tests[] = {
30 "var x = 1; x = a; r = x", "123", "0",
31 "var x = (a?(x=4,2):3); r = x", "2", "3",
32 "var x = (a?4:5); x = a; r = x", "123", "0",
33 "const x = 1; x = a; r = x", "1", "1",
34 "const x = (a?(x=4,2):3); r = x", "2", "3",
35 "const x = (a?4:5); x = a; r = x", "4", "5",
36 // Assignments to 'const' are SyntaxErrors, handled by the parser,
37 // hence we cannot test them here because they are early errors.
38 "'use strict'; let x = 1; x = a; r = x", "123", "0",
39 "'use strict'; let x = (a?(x=4,2):3); r = x", throws, "3",
40 "'use strict'; let x = (a?4:5); x = a; r = x", "123", "0",
43 static const char* bind_tests[] = {
44 "if (a) { const x = a }; r = x;", "123", "undefined",
45 "for (; a > 0; a--) { const x = a }; r = x", "123", "undefined",
46 // Re-initialization of variables other than legacy 'const' is not
47 // possible due to sane variable scoping, hence no tests here.
51 static void RunVariableTests(const char* source, const char* tests[]) {
52 EmbeddedVector<char, 512> buffer;
54 for (int i = 0; tests[i] != NULL; i += 3) {
55 SNPrintF(buffer, source, tests[i]);
56 PrintF("#%d: %s\n", i / 3, buffer.start());
57 FunctionTester T(buffer.start());
59 // Check function with non-falsey parameter.
60 if (tests[i + 1] != throws) {
61 Handle<Object> r = v8::Utils::OpenHandle(*CompileRun(tests[i + 1]));
62 T.CheckCall(r, T.Val(123), T.Val("result"));
64 T.CheckThrows(T.Val(123), T.Val("result"));
67 // Check function with falsey parameter.
68 if (tests[i + 2] != throws) {
69 Handle<Object> r = v8::Utils::OpenHandle(*CompileRun(tests[i + 2]));
70 T.CheckCall(r, T.Val(0.0), T.Val("result"));
72 T.CheckThrows(T.Val(0.0), T.Val("result"));
78 TEST(StackLoadVariables) {
79 const char* source = "(function(a,r) { %s; return r; })";
80 RunVariableTests(source, load_tests);
84 TEST(ContextLoadVariables) {
85 const char* source = "(function(a,r) { %s; function f() {x} return r; })";
86 RunVariableTests(source, load_tests);
90 TEST(StackStoreVariables) {
91 const char* source = "(function(a,r) { %s; return r; })";
92 RunVariableTests(source, store_tests);
96 TEST(ContextStoreVariables) {
97 const char* source = "(function(a,r) { %s; function f() {x} return r; })";
98 RunVariableTests(source, store_tests);
102 TEST(StackInitializeVariables) {
103 const char* source = "(function(a,r) { %s; return r; })";
104 RunVariableTests(source, bind_tests);
108 TEST(ContextInitializeVariables) {
109 const char* source = "(function(a,r) { %s; function f() {x} return r; })";
110 RunVariableTests(source, bind_tests);
114 TEST(SelfReferenceVariable) {
115 FunctionTester T("(function self() { return self; })");
117 T.CheckCall(T.function);
118 CompileRun("var self = 'not a function'");
119 T.CheckCall(T.function);