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. 4 5 // TODO(jkummerow): There are many ways to improve these tests, e.g.: 6 // - more variance in randomized inputs 7 // - better time complexity management 8 // - better code readability and documentation of intentions. 9 10 var RUN_WITH_ALL_ARGUMENT_ENTRIES = false; 11 var kOnManyArgumentsRemove = 5; 12 13 function makeArguments() { 14 var result = [ ]; 15 result.push(17); 16 result.push(-31); 17 result.push(new Array(100)); 18 result.push(new Array(100003)); 19 result.push(Number.MIN_VALUE); 20 result.push("whoops"); 21 result.push("x"); 22 result.push({"x": 1, "y": 2}); 23 var slowCaseObj = {"a": 3, "b": 4, "c": 5}; 24 delete slowCaseObj.c; 25 result.push(slowCaseObj); 26 result.push(function () { return 8; }); 27 return result; 28 } 29 30 var kArgObjects = makeArguments().length; 31 32 function makeFunction(name, argc) { 33 var args = []; 34 for (var i = 0; i < argc; i++) 35 args.push("x" + i); 36 var argsStr = args.join(", "); 37 return new Function(argsStr, 38 "return %" + name + "(" + argsStr + ");"); 39 } 40 41 function testArgumentCount(name, argc) { 42 for (var i = 0; i < 10; i++) { 43 var func = null; 44 try { 45 func = makeFunction(name, i); 46 } catch (e) { 47 if (e != "SyntaxError: Illegal access") throw e; 48 } 49 if (func === null && i == argc) { 50 throw "unexpected exception"; 51 } 52 var args = [ ]; 53 for (var j = 0; j < i; j++) 54 args.push(0); 55 try { 56 func.apply(void 0, args); 57 } catch (e) { 58 // we don't care what happens as long as we don't crash 59 } 60 } 61 } 62 63 function testArgumentTypes(name, argc) { 64 var type = 0; 65 var hasMore = true; 66 var func = makeFunction(name, argc); 67 while (hasMore) { 68 var argPool = makeArguments(); 69 // When we have 5 or more arguments we lower the amount of tests cases 70 // by randomly removing kOnManyArgumentsRemove entries 71 var numArguments = RUN_WITH_ALL_ARGUMENT_ENTRIES ? 72 kArgObjects : kArgObjects - kOnManyArgumentsRemove; 73 if (kArgObjects >= 5 && !RUN_WITH_ALL_ARGUMENT_ENTRIES) { 74 for (var i = 0; i < kOnManyArgumentsRemove; i++) { 75 var rand = Math.floor(Math.random() * (kArgObjects - i)); 76 argPool.splice(rand, 1); 77 } 78 } 79 var current = type; 80 hasMore = false; 81 var argList = [ ]; 82 for (var i = 0; i < argc; i++) { 83 var index = current % numArguments; 84 current = (current / numArguments) << 0; 85 if (index != (numArguments - 1)) 86 hasMore = true; 87 argList.push(argPool[index]); 88 } 89 try { 90 func.apply(void 0, argList); 91 } catch (e) { 92 // we don't care what happens as long as we don't crash 93 } 94 type++; 95 } 96 } 97 98 testArgumentCount(NAME, ARGC); 99 testArgumentTypes(NAME, ARGC); 100
