406 lines
9.8 KiB
JavaScript
406 lines
9.8 KiB
JavaScript
// Copyright 2014 Simon Lydell
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var expect = require("chai").expect
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var sourceMappingURL = require("../")
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var SourceMappingURL = sourceMappingURL.SourceMappingURL
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"use strict"
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var comments = {
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universal: [
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"/*# sourceMappingURL=foo.js.map */"
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],
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js: [
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"//# sourceMappingURL=foo.js.map"
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],
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block: [
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"/*",
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"# sourceMappingURL=foo.js.map",
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"*/"
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],
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mix: [
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"/*",
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"//# sourceMappingURL=foo.js.map",
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"*/"
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]
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}
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var newlines = {"\n": "\\n", "\r": "\\r", "\r\n": "\\r\\n"}
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function forEachNewLine(lines, fn) {
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forOf(newlines, function(newline) {
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fn(lines.join(newline), newline)
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})
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}
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function forEachComment(fn) {
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forOf(comments, function(name, comment) {
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forEachNewLine(comment, function(comment, newline) {
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var description = "the '" + name + "' syntax with '" + newlines[newline] + "' newlines"
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fn(comment, description, newline)
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})
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})
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}
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function forOf(obj, fn) {
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for (var key in obj) {
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if (Object.prototype.hasOwnProperty.call(obj, key)) {
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fn(key, obj[key])
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}
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}
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}
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describe("sourceMappingURL", function() {
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it("is an instance of SourceMappingURL", function() {
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expect(sourceMappingURL)
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.to.be.an.instanceOf(SourceMappingURL)
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})
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describe(".get", function() {
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forEachComment(function(comment, description, newline) {
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it("gets the url from " + description, function() {
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expect(sourceMappingURL.get("code" + newline + comment))
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.to.equal("foo.js.map")
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})
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it("gets the url from " + description + ", with no code", function() {
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expect(sourceMappingURL.get(comment))
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.to.equal("foo.js.map")
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})
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})
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it("returns null if no comment", function() {
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expect(sourceMappingURL.get("code"))
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.to.equal(null)
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})
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it("can return an empty string as url", function() {
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expect(sourceMappingURL.get("/*# sourceMappingURL= */"))
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.to.equal("")
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})
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})
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describe(".set", function() {
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forEachComment(function(comment, description, newline) {
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it("updates the comment for " + description, function() {
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expect(sourceMappingURL.set("code" + newline + comment, "/other/file.js.map"))
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.to.equal("code" + newline + "/*# sourceMappingURL=/other/file.js.map */")
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})
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it("allows to change comment syntax for " + description, function() {
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expect(sourceMappingURL.set("code" + newline + comment, "bar", ["//", ""]))
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.to.equal("code" + newline + "//# sourceMappingURL=bar")
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expect(sourceMappingURL.set("code" + newline + comment, "bar", ["//"]))
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.to.equal("code" + newline + "//# sourceMappingURL=bar")
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expect(sourceMappingURL.set("code" + newline + comment, "bar", ["/*\n//", "\n*/\n"]))
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.to.equal("code" + newline + "/*\n//# sourceMappingURL=bar\n*/\n")
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})
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})
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it("tries to use the same newline as the rest of the code", function() {
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expect(sourceMappingURL.set("code\nmore code", "foo"))
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.to.eql("code\nmore code\n/*# sourceMappingURL=foo */")
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expect(sourceMappingURL.set("code\rmore code", "foo"))
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.to.eql("code\rmore code\r/*# sourceMappingURL=foo */")
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expect(sourceMappingURL.set("code\r\nmore code", "foo"))
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.to.eql("code\r\nmore code\r\n/*# sourceMappingURL=foo */")
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expect(sourceMappingURL.set("a\r\nb\rc\nd", "foo"))
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.to.eql("a\r\nb\rc\nd\r\n/*# sourceMappingURL=foo */")
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})
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it("defaults to \\n if no newline", function() {
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expect(sourceMappingURL.set("code", "foo"))
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.to.equal("code\n/*# sourceMappingURL=foo */")
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})
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it("always adds a newline", function() {
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expect(sourceMappingURL.set("", "foo"))
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.to.equal("\n/*# sourceMappingURL=foo */")
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expect(sourceMappingURL.set("code\n", "foo"))
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.to.equal("code\n\n/*# sourceMappingURL=foo */")
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})
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it("adds a comment if no comment", function() {
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expect(sourceMappingURL.set("code\n", "/other/file.js.map"))
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.to.equal("code\n\n/*# sourceMappingURL=/other/file.js.map */")
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})
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it("obeys a changed default comment syntax", function() {
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expect(new SourceMappingURL(["Open", "Close"]).set("code\n", "foo"))
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.to.eql("code\n\nOpen# sourceMappingURL=fooClose")
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})
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})
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describe(".remove", function() {
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forEachComment(function(comment, description, newline) {
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it("removes the comment for " + description, function() {
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expect(sourceMappingURL.remove("code" + newline + comment))
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.to.equal("code")
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})
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it("removes the comment for " + description + ", with no code", function() {
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expect(sourceMappingURL.remove(comment))
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.to.equal("")
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})
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})
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it("does nothing if no comment", function() {
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expect(sourceMappingURL.remove("code\n"))
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.to.equal("code\n")
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})
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})
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describe(".insertBefore", function() {
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forEachComment(function(comment, description, newline) {
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it("inserts a string before the comment for " + description, function() {
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expect(sourceMappingURL.insertBefore("code" + newline + comment, newline + "more code"))
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.to.equal("code" + newline + "more code" + newline + comment)
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expect(sourceMappingURL.insertBefore(comment, "some code"))
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.to.equal("some code\n" + comment)
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})
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})
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it("appends if no comment", function() {
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expect(sourceMappingURL.insertBefore("code", "\nmore code"))
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.to.equal("code\nmore code")
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})
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})
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describe(".regex", function() {
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it("includes ._innerRegex", function() {
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expect(sourceMappingURL.regex.source)
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.to.contain(sourceMappingURL._innerRegex.source)
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})
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it("includes ._newlineRegex", function() {
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expect(sourceMappingURL.regex.source)
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.to.contain(sourceMappingURL._newlineRegex.source)
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})
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var match = function(code) {
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expect(code)
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.to.match(sourceMappingURL.regex)
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}
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var noMatch = function(code) {
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expect(code)
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.not.to.match(sourceMappingURL.regex)
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}
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forEachComment(function(comment, description, newline) {
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it("matches " + description + ", even with trailing whitespace", function() {
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match("code" + newline + comment)
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})
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it("matches " + description + ", with no code", function() {
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match(comment)
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})
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it("matches " + description + ", with trailing whitespace", function() {
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match(comment + " ")
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match(comment + newline)
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match(comment + newline + newline + "\t" + newline + " \t ")
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})
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it("only matches " + description + " at the end of files", function() {
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noMatch("code" + newline + comment + " code")
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noMatch("code" + newline + comment + newline + "code")
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noMatch("code" + newline + comment + newline + "// Generated by foobar")
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noMatch("alert('\\" + newline + comment + "')")
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noMatch('alert("\\' + newline + comment + '")')
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})
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})
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it("does not match some cases that are easy to mess up", function() {
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noMatch(
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"/* # sourceMappingURL=foo */"
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)
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noMatch(
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"/*\n" +
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" //# sourceMappingURL=foo\n" +
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"*/"
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)
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noMatch(
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"/*//# sourceMappingURL=foo\n" +
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"*/"
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)
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noMatch(
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"// # sourceMappingURL=foo"
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)
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})
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it("is liberal regarding inner whitespace", function() {
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match(
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"/*# sourceMappingURL=foo*/"
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)
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match(
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"/*# sourceMappingURL=foo */"
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)
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match(
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"/*# sourceMappingURL=foo \t\n" +
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"*/"
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)
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match(
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"/* \n" +
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"# sourceMappingURL=foo\n" +
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"*/"
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)
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match(
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"/*\n" +
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"# sourceMappingURL=foo\n" +
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" */"
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)
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match(
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"/*\n" +
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"# sourceMappingURL=foo\n" +
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"\n" +
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"\t\n" +
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"*/"
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)
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})
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})
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describe("._innerRegex", function() {
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it("matches the contents of sourceMappingURL comments", function() {
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expect("# sourceMappingURL=http://www.example.com/foo/bar.js.map")
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.to.match(sourceMappingURL._innerRegex)
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})
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it("captures the url in the first capture group", function() {
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expect(sourceMappingURL._innerRegex.exec("# sourceMappingURL=foo")[1])
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.to.equal("foo")
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})
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it("supports the legacy syntax", function() {
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expect("@ sourceMappingURL=http://www.example.com/foo/bar.js.map")
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.to.match(sourceMappingURL._innerRegex)
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})
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})
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describe("._newlineRegex", function() {
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var match = function(string) {
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var newline = string.match(sourceMappingURL._newlineRegex)
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expect(newline).to.be.ok
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expect(newline[0]).to.equal(string)
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}
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it("matches \\n", function() {
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match("\n")
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})
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it("matches \\r", function() {
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match("\r")
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})
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it("matches \\r\\n", function() {
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match("\r\n")
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})
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})
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describe("._commentSyntax", function() {
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it("defaults to /**/ comments", function() {
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expect(sourceMappingURL._commentSyntax)
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.to.eql(["/*", " */"])
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})
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})
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describe(".SourceMappingURL", function() {
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it("sets ._commentSyntax", function() {
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expect(new SourceMappingURL(["//", ""])._commentSyntax)
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.to.eql(["//", ""])
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})
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it("creates an equivalent sourceMappingURL object", function() {
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expect(new SourceMappingURL(sourceMappingURL._commentSyntax))
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.to.eql(sourceMappingURL)
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})
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})
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})
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