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JavaScript

5 years ago
// Copyright 2014 Simon Lydell
// X11 (“MIT”) Licensed. (See LICENSE.)
var expect = require("expect.js")
var sourceMappingURL = require("../")
var comments = {
universal: [
"/*# sourceMappingURL=foo.js.map */"
],
js: [
"//# sourceMappingURL=foo.js.map"
],
block: [
"/*",
"# sourceMappingURL=foo.js.map",
"*/"
],
mix: [
"/*",
"//# sourceMappingURL=foo.js.map",
"*/"
]
}
var nonTrailingComments = {
jsLeading: {
contents: [
"//# sourceMappingURL=foo.js.map",
"(function(){})"
],
solution: [
"(function(){})"
]
},
mixEmbedded: {
contents: [
"/*! Library Name v1.0.0",
"//# sourceMappingURL=foo.js.map",
"*/",
"(function(){})"
],
solution: [
"/*! Library Name v1.0.0",
"*/",
"(function(){})"
]
}
}
function forEachComment(fn) {
forOf(comments, function(name, comment) {
var description = "the '" + name + "' syntax with "
fn(comment.join("\n"), description + "regular newlines")
fn(comment.join("\r\n"), description + "Windows newlines")
})
}
function forEachNonTrailingComment(fn) {
forOf(nonTrailingComments, function(name, comment) {
var description = "the '" + name + "' syntax with "
fn({
contents: comment.contents.join("\n"),
solution: comment.solution.join("\n")
}, description + "regular newlines")
fn({
contents: comment.contents.join("\r\n"),
solution: comment.solution.join("\r\n")
}, description + "Windows newlines")
})
}
function forOf(obj, fn) {
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
fn(key, obj[key])
}
}
}
describe("sourceMappingURL", function() {
describe(".getFrom", function() {
forEachComment(function(comment, description) {
it("gets the url from " + description, function() {
expect(sourceMappingURL.getFrom("code\n" + comment))
.to.equal("foo.js.map")
expect(sourceMappingURL.getFrom("code" + comment))
.to.equal("foo.js.map")
expect(sourceMappingURL.getFrom(comment))
.to.equal("foo.js.map")
})
})
forEachNonTrailingComment(function(comment, description) {
it("gets the url from " + description, function() {
expect(sourceMappingURL.getFrom("code\n" + comment.contents))
.to.equal("foo.js.map")
expect(sourceMappingURL.getFrom("code" + comment.contents))
.to.equal("foo.js.map")
expect(sourceMappingURL.getFrom(comment.contents))
.to.equal("foo.js.map")
})
})
it("returns null if no comment", function() {
expect(sourceMappingURL.getFrom("code"))
.to.equal(null)
})
it("can return an empty string as url", function() {
expect(sourceMappingURL.getFrom("/*# sourceMappingURL= */"))
.to.equal("")
})
it("is detachable", function() {
var get = sourceMappingURL.getFrom
expect(get("/*# sourceMappingURL=foo */"))
.to.equal("foo")
})
})
describe(".existsIn", function() {
forEachComment(function(comment, description) {
it("returns true for " + description, function() {
expect(sourceMappingURL.existsIn("code\n" + comment))
.to.equal(true)
expect(sourceMappingURL.existsIn("code" + comment))
.to.equal(true)
expect(sourceMappingURL.existsIn(comment))
.to.equal(true)
})
})
forEachNonTrailingComment(function(comment, description) {
it("returns true for " + description, function() {
expect(sourceMappingURL.existsIn("code\n" + comment.contents))
.to.equal(true)
expect(sourceMappingURL.existsIn("code" + comment.contents))
.to.equal(true)
expect(sourceMappingURL.existsIn(comment.contents))
.to.equal(true)
})
})
it("returns false if no comment", function() {
expect(sourceMappingURL.existsIn("code"))
.to.equal(false)
})
it("is detachable", function() {
var has = sourceMappingURL.existsIn
expect(has("/*# sourceMappingURL=foo */"))
.to.equal(true)
})
})
describe(".removeFrom", function() {
forEachComment(function(comment, description) {
it("removes the comment for " + description, function() {
expect(sourceMappingURL.removeFrom("code\n" + comment))
.to.equal("code\n")
expect(sourceMappingURL.removeFrom("code" + comment))
.to.equal("code")
expect(sourceMappingURL.removeFrom(comment))
.to.equal("")
})
})
forEachNonTrailingComment(function(comment, description) {
it("removes the comment for " + description, function() {
expect(sourceMappingURL.removeFrom("code\n" + comment.contents))
.to.equal("code\n" + comment.solution)
expect(sourceMappingURL.removeFrom("code" + comment.contents))
.to.equal("code" + comment.solution)
expect(sourceMappingURL.removeFrom(comment.contents))
.to.equal(comment.solution)
})
})
it("does nothing if no comment", function() {
expect(sourceMappingURL.removeFrom("code\n"))
.to.equal("code\n")
})
it("is detachable", function() {
var remove = sourceMappingURL.removeFrom
expect(remove("/*# sourceMappingURL=foo */"))
.to.equal("")
})
})
describe(".insertBefore", function() {
forEachComment(function(comment, description) {
it("inserts a string before the comment for " + description, function() {
expect(sourceMappingURL.insertBefore("code\n" + comment, "more code\n"))
.to.equal("code\nmore code\n" + comment)
expect(sourceMappingURL.insertBefore("code" + comment, "\nmore code"))
.to.equal("code\nmore code" + comment)
expect(sourceMappingURL.insertBefore(comment, "some code"))
.to.equal("some code" + comment)
})
})
it("inserts a string before an embedded comment", function() {
expect(sourceMappingURL.insertBefore("/*! Library Name v1.0.0\n" +
"//# sourceMappingURL=foo.js.map\n*/\n(function(){})", "code\n"))
.to.equal("/*! Library Name v1.0.0\ncode\n" +
"//# sourceMappingURL=foo.js.map\n*/\n(function(){})")
})
it("inserts a string before a leading comment", function() {
expect(sourceMappingURL.insertBefore("//# sourceMappingURL=foo.js.map\n" +
"(function(){})", "code\n"))
.to.equal("code\n//# sourceMappingURL=foo.js.map\n" +
"(function(){})")
})
it("appends if no comment", function() {
expect(sourceMappingURL.insertBefore("code", "\nmore code"))
.to.equal("code\nmore code")
})
it("is detachable", function() {
var insertBefore = sourceMappingURL.insertBefore
expect(insertBefore("/*# sourceMappingURL=foo */", "bar"))
.to.equal("bar/*# sourceMappingURL=foo */")
})
})
describe(".regex", function() {
it("includes ._innerRegex", function() {
expect(sourceMappingURL.regex.source)
.to.contain(sourceMappingURL._innerRegex.source)
})
var match = function(code) {
expect(code)
.to.match(sourceMappingURL.regex)
}
var noMatch = function(code) {
expect(code)
.not.to.match(sourceMappingURL.regex)
}
forEachComment(function(comment, description) {
it("matches " + description, function() {
match("code\n" + comment)
match("code" + comment)
match(comment)
})
it("matches " + description + ", with trailing whitespace", function() {
match(comment + " ")
match(comment + "\n")
match(comment + "\n\n\t\n \t ")
})
})
it("does not match some cases that are easy to mess up", function() {
noMatch(
"/* # sourceMappingURL=foo */"
)
noMatch(
"// # sourceMappingURL=foo"
)
})
it("is liberal regarding inner whitespace", function() {
match(
"/*# sourceMappingURL=foo*/"
)
match(
"/*# sourceMappingURL=foo */"
)
match(
"/*# sourceMappingURL=foo \t\n" +
"*/"
)
match(
"/* \n" +
"# sourceMappingURL=foo\n" +
"*/"
)
match(
"/*\n" +
"# sourceMappingURL=foo\n" +
" */"
)
match(
"/*\n" +
"# sourceMappingURL=foo\n" +
"\n" +
"\t\n" +
"*/"
)
})
})
describe("._innerRegex", function() {
it("matches the contents of sourceMappingURL comments", function() {
expect("# sourceMappingURL=http://www.example.com/foo/bar.js.map")
.to.match(sourceMappingURL._innerRegex)
})
it("captures the url in the first capture group", function() {
expect(sourceMappingURL._innerRegex.exec("# sourceMappingURL=foo")[1])
.to.equal("foo")
})
it("supports the legacy syntax", function() {
expect("@ sourceMappingURL=http://www.example.com/foo/bar.js.map")
.to.match(sourceMappingURL._innerRegex)
})
})
})