webpack
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Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.
247 lines (238 loc) • 6.76 kB
JavaScript
var should = require("should");
var Parser = require("../lib/Parser");
describe("Parser", function() {
var testCases = {
"call ident": [
function() {
abc("test");
},
{
abc: ["test"]
}
],
"call member": [
function() {
cde.abc("membertest");
},
{
cdeabc: ["membertest"]
}
],
"call inner member": [
function() {
cde.ddd.abc("inner");
},
{
cdedddabc: ["inner"]
}
],
"expression": [
function() {
fgh;
},
{
fgh: [""]
}
],
"expression sub": [
function() {
fgh.sub;
},
{
fghsub: ["notry"]
}
],
"in function definition": [
function() {
(function(abc, cde, fgh) {
abc("test");
cde.abc("test");
cde.ddd.abc("test");
fgh;
fgh.sub;
})();
},
{}
],
"var definition": [
function() {
var abc, cde, fgh;
abc("test");
cde.abc("test");
cde.ddd.abc("test");
fgh;
fgh.sub;
},
{}
],
"function definition": [
function() {
function abc() {}
function cde() {}
function fgh() {}
abc("test");
cde.abc("test");
cde.ddd.abc("test");
fgh;
fgh.sub;
},
{}
],
"in try": [
function() {
try {
fgh.sub;
fgh;
function test(ttt) {
fgh.sub;
fgh;
}
} catch(e) {
fgh.sub;
fgh;
}
},
{
fghsub: ["try", "notry", "notry"],
fgh: ["", "test ttt", "test e"]
}
],
"renaming with var": [
function() {
var xyz = abc;
xyz("test");
},
{
abc: ["test"]
}
],
"renaming with assignment": [
function() {
var xyz;
xyz = abc;
xyz("test");
},
{
abc: ["test"]
}
],
"renaming with IIFE": [
function() {
!function(xyz) {
xyz("test");
}(abc);
},
{
abc: ["test"]
}
],
"renaming with IIFE (called)": [
function() {
!function(xyz) {
xyz("test");
}.call(fgh, abc);
},
{
abc: ["test"],
fgh: [""]
}
],
};
Object.keys(testCases).forEach(function(name) {
it("should parse " + name, function() {
var source = testCases[name][0].toString();
source = source.substr(13, source.length - 14).trim();
var state = testCases[name][1];
var testParser = new Parser({});
testParser.plugin("can-rename abc", function(expr) {
return true;
});
testParser.plugin("call abc", function(expr) {
if(!this.state.abc) this.state.abc = []
this.state.abc.push(this.parseString(expr.arguments[0]));
return true;
});
testParser.plugin("call cde.abc", function(expr) {
if(!this.state.cdeabc) this.state.cdeabc = []
this.state.cdeabc.push(this.parseString(expr.arguments[0]));
return true;
});
testParser.plugin("call cde.ddd.abc", function(expr) {
if(!this.state.cdedddabc) this.state.cdedddabc = []
this.state.cdedddabc.push(this.parseString(expr.arguments[0]));
return true;
});
testParser.plugin("expression fgh", function(expr) {
if(!this.state.fgh) this.state.fgh = []
this.state.fgh.push(this.scope.definitions.join(" "));
return true;
});
testParser.plugin("expression fgh.sub", function(expr) {
if(!this.state.fghsub) this.state.fghsub = []
this.state.fghsub.push(this.scope.inTry ? "try" : "notry");
return true;
});
var actual = testParser.parse(source);
should.strictEqual(typeof actual, "object");
actual.should.be.eql(state);
});
});
describe("expression evaluation", function() {
function evaluateInParser(source) {
var parser = new Parser();
parser.plugin("call test", function(expr) {
this.state.result = this.evaluateExpression(expr.arguments[0]);
});
return parser.parse("test(" + source + ");").result;
}
var testCases = {
"\"strrring\"": "string=strrring",
"\"strr\" + \"ring\"": "string=strrring",
"\"s\" + (\"trr\" + \"rin\") + \"g\"": "string=strrring",
"'S' + (\"strr\" + \"ring\") + 'y'": "string=Sstrrringy",
"1": "number=1",
"1 + 3": "number=4",
"'pre' + a": "wrapped=['pre' string=pre]+[string=]",
"a + 'post'": "wrapped=[string=]+['post' string=post]",
"'pre' + a + 'post'": "wrapped=['pre' string=pre]+['post' string=post]",
"1 + a + 2": "",
"1 + a + 'post'": "wrapped=[string=]+['post' string=post]",
"'' + 1 + a + 2": "wrapped=['' + 1 string=1]+[2 string=2]",
"'' + 1 + a + 2 + 3": "wrapped=['' + 1 string=1]+[2 + 3 string=23]",
"'' + 1 + a + (2 + 3)": "wrapped=['' + 1 string=1]+[2 + 3 string=5]",
"'pre' + (1 + a) + (2 + 3)": "wrapped=['pre' string=pre]+[2 + 3 string=5]",
"a ? 'o1' : 'o2'": "options=['o1' string=o1],['o2' string=o2]",
"a ? 'o1' : b ? 'o2' : 'o3'": "options=['o1' string=o1],['o2' string=o2],['o3' string=o3]",
"a ? (b ? 'o1' : 'o2') : 'o3'": "options=['o1' string=o1],['o2' string=o2],['o3' string=o3]",
"a ? (b ? 'o1' : 'o2') : c ? 'o3' : 'o4'": "options=['o1' string=o1],['o2' string=o2],['o3' string=o3],['o4' string=o4]",
"a ? 'o1' : b ? 'o2' : c ? 'o3' : 'o4'": "options=['o1' string=o1],['o2' string=o2],['o3' string=o3],['o4' string=o4]",
"a ? 'o1' : b ? b : c ? 'o3' : c": "options=['o1' string=o1],[b],['o3' string=o3],[c]",
"['i1', 'i2', 3, a, b ? 4 : 5]": "items=['i1' string=i1],['i2' string=i2],[3 number=3],[a],[b ? 4 : 5 options=[4 number=4],[5 number=5]]",
};
Object.keys(testCases).forEach(function(key) {
function evalExprToString(evalExpr) {
if(!evalExpr) {
return "null";
} else {
var result = [];
if(evalExpr.isString()) result.push("string=" + evalExpr.string);
if(evalExpr.isNumber()) result.push("number=" + evalExpr.number);
if(evalExpr.isRegExp()) result.push("regExp=" + evalExpr.regExp);
if(evalExpr.isConditional()) result.push("options=[" + evalExpr.options.map(evalExprToString).join("],[") + "]");
if(evalExpr.isArray()) result.push("items=[" + evalExpr.items.map(evalExprToString).join("],[") + "]");
if(evalExpr.isWrapped()) result.push("wrapped=[" + evalExprToString(evalExpr.prefix) + "]+[" + evalExprToString(evalExpr.postfix) + "]");
if(evalExpr.range) {
var start = evalExpr.range[0] - 5;
var end = evalExpr.range[1] - 5;
return key.substr(start, end - start) + (result.length > 0 ? " " + result.join(" ") : "");
}
return result.join(" ");
}
}
it("should eval " + key, function() {
var evalExpr = evaluateInParser(key);
evalExprToString(evalExpr).should.be.eql(testCases[key] ? key + " " + testCases[key] : key);
});
});
});
});