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tweak ufuzz test case generation (#5611)

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This commit is contained in:
Alex Lam S.L
2022-08-09 17:20:20 +01:00
committed by GitHub
parent 5a4cd09938
commit 9d37276986
1 changed files with 24 additions and 22 deletions
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46
test/ufuzz/index.js
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@@ -425,7 +425,7 @@ function createTopLevelCode() {
if (rng(2)) { if (rng(2)) {
s.push(createStatements(3, MAX_GENERATION_RECURSION_DEPTH, CANNOT_THROW, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, 0)); s.push(createStatements(3, MAX_GENERATION_RECURSION_DEPTH, CANNOT_THROW, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, 0));
} else { } else {
s.push(createFunctions(rng(MAX_GENERATED_TOPLEVELS_PER_RUN) + 1, MAX_GENERATION_RECURSION_DEPTH, DEFUN_OK, CANNOT_THROW, 0)); s.push(createFunctions(MAX_GENERATED_TOPLEVELS_PER_RUN, MAX_GENERATION_RECURSION_DEPTH, DEFUN_OK, CANNOT_THROW, 0));
} }
}); });
// preceding `null` makes for a cleaner output (empty string still shows up etc) // preceding `null` makes for a cleaner output (empty string still shows up etc)
@@ -440,6 +440,7 @@ function createFunctions(n, recurmax, allowDefun, canThrow, stmtDepth) {
var s = ""; var s = "";
while (n-- > 0) { while (n-- > 0) {
s += createFunction(recurmax, allowDefun, canThrow, stmtDepth) + "\n"; s += createFunction(recurmax, allowDefun, canThrow, stmtDepth) + "\n";
if (rng(2)) break;
} }
return s; return s;
} }
@@ -455,7 +456,7 @@ function createParams(was_async, was_generator, noDuplicate) {
if (!generator) generator = was_generator; if (!generator) generator = was_generator;
var len = unique_vars.length; var len = unique_vars.length;
var params = []; var params = [];
for (var n = rng(4); --n >= 0;) { for (var n = 3; --n >= 0 && rng(2);) {
var name = createVarName(MANDATORY); var name = createVarName(MANDATORY);
if (noDuplicate || in_class) unique_vars.push(name); if (noDuplicate || in_class) unique_vars.push(name);
params.push(name); params.push(name);
@@ -470,7 +471,7 @@ function createArgs(recurmax, stmtDepth, canThrow, noTemplate) {
recurmax--; recurmax--;
if (SUPPORT.template && !noTemplate && rng(20) == 0) return createTemplateLiteral(recurmax, stmtDepth, canThrow); if (SUPPORT.template && !noTemplate && rng(20) == 0) return createTemplateLiteral(recurmax, stmtDepth, canThrow);
var args = []; var args = [];
for (var n = rng(4); --n >= 0;) switch (SUPPORT.spread ? rng(50) : 3) { for (var n = 3; --n >= 0 && rng(2);) switch (SUPPORT.spread ? rng(50) : 3) {
case 0: case 0:
case 1: case 1:
var name = getVarName(); var name = getVarName();
@@ -850,7 +851,7 @@ function createFunction(recurmax, allowDefun, canThrow, stmtDepth) {
s.push(defns()); s.push(defns());
if (rng(5) === 0) { if (rng(5) === 0) {
// functions with functions. lower the recursion to prevent a mess. // functions with functions. lower the recursion to prevent a mess.
s.push(createFunctions(rng(5) + 1, Math.ceil(recurmax * 0.7), DEFUN_OK, canThrow, stmtDepth)); s.push(createFunctions(5, Math.ceil(recurmax * 0.7), DEFUN_OK, canThrow, stmtDepth));
} else { } else {
// functions with statements // functions with statements
s.push(_createStatements(3, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth)); s.push(_createStatements(3, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth));
@@ -884,6 +885,7 @@ function _createStatements(n, recurmax, canThrow, canBreak, canContinue, cannotR
var s = ""; var s = "";
while (--n > 0) { while (--n > 0) {
s += createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + "\n"; s += createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + "\n";
if (rng(2)) break;
} }
return s; return s;
} }
@@ -963,7 +965,7 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
switch (target) { switch (target) {
case STMT_BLOCK: case STMT_BLOCK:
var label = createLabel(canBreak); var label = createLabel(canBreak);
return label.target + "{" + createStatements(rng(5) + 1, recurmax, canThrow, label.break, canContinue, cannotReturn, stmtDepth) + "}"; return label.target + "{" + createStatements(5, recurmax, canThrow, label.break, canContinue, cannotReturn, stmtDepth) + "}";
case STMT_IF_ELSE: case STMT_IF_ELSE:
return "if (" + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + ")" + createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + (rng(2) ? " else " + createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) : ""); return "if (" + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + ")" + createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) + (rng(2) ? " else " + createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth) : "");
case STMT_DO_WHILE: case STMT_DO_WHILE:
@@ -1076,7 +1078,7 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
s += " * as " + createImportAlias(); s += " * as " + createImportAlias();
} else { } else {
var names = []; var names = [];
for (var i = rng(4); --i >= 0;) { for (var i = 3; --i >= 0 && rng(2);) {
var name = createImportAlias(); var name = createImportAlias();
names.push(rng(2) ? getDotKey() + " as " + name : name); names.push(rng(2) ? getDotKey() + " as " + name : name);
} }
@@ -1184,7 +1186,7 @@ function createStatement(recurmax, canThrow, canBreak, canContinue, cannotReturn
} }
if (n !== 0) s += [ if (n !== 0) s += [
" finally { ", " finally { ",
createStatements(rng(5) + 1, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth), createStatements(5, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth),
" }", " }",
].join(""); ].join("");
return s; return s;
@@ -1204,7 +1206,7 @@ function createSwitchParts(recurmax, n, canThrow, canBreak, canContinue, cannotR
if (hadDefault || rng(5) > 0) { if (hadDefault || rng(5) > 0) {
s.push( s.push(
"case " + createExpression(recurmax, NO_COMMA, stmtDepth, canThrow) + ":", "case " + createExpression(recurmax, NO_COMMA, stmtDepth, canThrow) + ":",
_createStatements(rng(3) + 1, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth), _createStatements(3, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth),
rng(10) > 0 ? " break;" : "/* fall-through */", rng(10) > 0 ? " break;" : "/* fall-through */",
"" ""
); );
@@ -1212,7 +1214,7 @@ function createSwitchParts(recurmax, n, canThrow, canBreak, canContinue, cannotR
hadDefault = true; hadDefault = true;
s.push( s.push(
"default:", "default:",
_createStatements(rng(3) + 1, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth), _createStatements(3, recurmax, canThrow, canBreak, canContinue, cannotReturn, stmtDepth),
"" ""
); );
} }
@@ -1343,7 +1345,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
"(" + params + "{", "(" + params + "{",
strictMode(), strictMode(),
defns(), defns(),
_createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth) _createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth)
); );
suffix = "})"; suffix = "})";
} else { } else {
@@ -1375,7 +1377,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
s.push( s.push(
"(" + makeFunction(name) + "(){", "(" + makeFunction(name) + "(){",
strictMode(), strictMode(),
createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth), createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth),
rng(2) ? "})" : "})()" + invokeGenerator(save_generator) rng(2) ? "})" : "})()" + invokeGenerator(save_generator)
); );
} }
@@ -1384,7 +1386,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
s.push( s.push(
"+" + makeFunction(name) + "(){", "+" + makeFunction(name) + "(){",
strictMode(), strictMode(),
createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth), createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth),
"}()" + invokeGenerator(save_generator) "}()" + invokeGenerator(save_generator)
); );
break; break;
@@ -1392,7 +1394,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
s.push( s.push(
"!" + makeFunction(name) + "(){", "!" + makeFunction(name) + "(){",
strictMode(), strictMode(),
createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth), createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth),
"}()" + invokeGenerator(save_generator) "}()" + invokeGenerator(save_generator)
); );
break; break;
@@ -1400,7 +1402,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
s.push( s.push(
"void " + makeFunction(name) + "(){", "void " + makeFunction(name) + "(){",
strictMode(), strictMode(),
createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth), createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth),
"}()" + invokeGenerator(save_generator) "}()" + invokeGenerator(save_generator)
); );
break; break;
@@ -1416,10 +1418,10 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
var add_new_target = SUPPORT.new_target && VALUES.indexOf("new.target") < 0; var add_new_target = SUPPORT.new_target && VALUES.indexOf("new.target") < 0;
if (add_new_target) VALUES.push("new.target"); if (add_new_target) VALUES.push("new.target");
s.push(defns()); s.push(defns());
if (instantiate) for (var i = rng(4); --i >= 0;) { if (instantiate) for (var i = 3; --i >= 0 && rng(2);) {
s.push((in_class ? "if (this) " : "") + createThisAssignment(recurmax, stmtDepth, canThrow)); s.push((in_class ? "if (this) " : "") + createThisAssignment(recurmax, stmtDepth, canThrow));
} }
s.push(_createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth)); s.push(_createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth));
if (add_new_target) VALUES.splice(VALUES.indexOf("new.target"), 1); if (add_new_target) VALUES.splice(VALUES.indexOf("new.target"), 1);
}); });
generator = save_generator; generator = save_generator;
@@ -1565,7 +1567,7 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
function createArrayLiteral(recurmax, stmtDepth, canThrow) { function createArrayLiteral(recurmax, stmtDepth, canThrow) {
recurmax--; recurmax--;
var arr = []; var arr = [];
for (var i = rng(6); --i >= 0;) switch (SUPPORT.spread ? rng(50) : 3 + rng(47)) { for (var i = 5; --i >= 0 && rng(2);) switch (SUPPORT.spread ? rng(50) : 3 + rng(47)) {
case 0: case 0:
case 1: case 1:
var name = getVarName(); var name = getVarName();
@@ -1594,7 +1596,7 @@ function createTemplateLiteral(recurmax, stmtDepth, canThrow) {
recurmax--; recurmax--;
var s = []; var s = [];
addText(); addText();
for (var i = rng(6); --i >= 0;) { for (var i = 5; --i >= 0 && rng(2);) {
s.push("${", createExpression(recurmax, COMMA_OK, stmtDepth, canThrow), "}"); s.push("${", createExpression(recurmax, COMMA_OK, stmtDepth, canThrow), "}");
addText(); addText();
} }
@@ -1749,7 +1751,7 @@ function createObjectFunction(recurmax, stmtDepth, canThrow, internal, isClazz)
s.push(_createStatements(2, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, stmtDepth)); s.push(_createStatements(2, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, stmtDepth));
if (internal == "super") s.push("super" + createArgs(recurmax, stmtDepth, canThrow, NO_TEMPLATE) + ";"); if (internal == "super") s.push("super" + createArgs(recurmax, stmtDepth, canThrow, NO_TEMPLATE) + ";");
allow_this = save_allow; allow_this = save_allow;
if (/^(constructor|super)$/.test(internal) || rng(10) == 0) for (var i = rng(4); --i >= 0;) { if (/^(constructor|super)$/.test(internal) || rng(10) == 0) for (var i = 3; --i >= 0 && rng(2);) {
s.push(rng(2) ? createSuperAssignment(recurmax, stmtDepth, canThrow) : createThisAssignment(recurmax, stmtDepth, canThrow)); s.push(rng(2) ? createSuperAssignment(recurmax, stmtDepth, canThrow) : createThisAssignment(recurmax, stmtDepth, canThrow));
} }
s.push(_createStatements(2, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth), "}"); s.push(_createStatements(2, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth), "}");
@@ -1768,7 +1770,7 @@ function createObjectLiteral(recurmax, stmtDepth, canThrow) {
var obj = [ "({" ]; var obj = [ "({" ];
var offset = SUPPORT.spread_object ? 0 : SUPPORT.computed_key ? 2 : 4; var offset = SUPPORT.spread_object ? 0 : SUPPORT.computed_key ? 2 : 4;
var has_proto = false; var has_proto = false;
for (var i = rng(6); --i >= 0;) switch (offset + rng(50 - offset)) { for (var i = 5; --i >= 0 && rng(2);) switch (offset + rng(50 - offset)) {
case 0: case 0:
obj.push("..." + getVarName() + ","); obj.push("..." + getVarName() + ",");
break; break;
@@ -1815,7 +1817,7 @@ function createClassLiteral(recurmax, stmtDepth, canThrow, name) {
} }
s += " {\n"; s += " {\n";
var declared = []; var declared = [];
for (var i = rng(6); --i >= 0;) { for (var i = 5; --i >= 0 && rng(2);) {
var fixed = false; var fixed = false;
if (rng(5) == 0) { if (rng(5) == 0) {
fixed = true; fixed = true;
@@ -1849,7 +1851,7 @@ function createClassLiteral(recurmax, stmtDepth, canThrow, name) {
generator = false; generator = false;
s += [ s += [
"{ ", "{ ",
createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, stmtDepth), createStatements(5, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, stmtDepth),
" }\n", " }\n",
].join(""); ].join("");
generator = save_generator; generator = save_generator;