pulsar/spec/text-buffer-spec.coffee

975 lines
37 KiB
CoffeeScript

Project = require 'project'
Buffer = require 'text-buffer'
fsUtils = require 'fs-utils'
path = require 'path'
_ = require 'underscore'
{Site} = require 'telepath'
describe 'TextBuffer', ->
[filePath, fileContents, buffer] = []
beforeEach ->
filePath = require.resolve('fixtures/sample.js')
fileContents = fsUtils.read(filePath)
buffer = project.bufferForPath(filePath)
afterEach ->
buffer?.release()
describe 'constructor', ->
beforeEach ->
buffer.release()
buffer = null
describe "when given a path", ->
describe "when a file exists for the path", ->
it "loads the contents of that file", ->
filePath = require.resolve 'fixtures/sample.txt'
buffer = project.bufferForPath(filePath)
expect(buffer.getText()).toBe fsUtils.read(filePath)
it "does not allow the initial state of the buffer to be undone", ->
filePath = require.resolve 'fixtures/sample.txt'
buffer = project.bufferForPath(filePath)
buffer.undo()
expect(buffer.getText()).toBe fsUtils.read(filePath)
describe "when no file exists for the path", ->
it "is modified and is initially empty", ->
filePath = "does-not-exist.txt"
expect(fsUtils.exists(filePath)).toBeFalsy()
buffer = project.bufferForPath(filePath)
expect(buffer.isModified()).toBeTruthy()
expect(buffer.getText()).toBe ''
describe "when no path is given", ->
it "creates an empty buffer", ->
buffer = project.bufferForPath(null)
expect(buffer .getText()).toBe ""
describe "path-changed event", ->
[filePath, newPath, bufferToChange, eventHandler] = []
beforeEach ->
filePath = path.join(fsUtils.resolveOnLoadPath("fixtures"), "atom-manipulate-me")
newPath = "#{filePath}-i-moved"
fsUtils.writeSync(filePath, "")
bufferToChange = project.bufferForPath(filePath)
eventHandler = jasmine.createSpy('eventHandler')
bufferToChange.on 'path-changed', eventHandler
afterEach ->
bufferToChange.destroy()
fsUtils.remove(filePath) if fsUtils.exists(filePath)
fsUtils.remove(newPath) if fsUtils.exists(newPath)
it "triggers a `path-changed` event when path is changed", ->
bufferToChange.saveAs(newPath)
expect(eventHandler).toHaveBeenCalledWith(bufferToChange)
it "triggers a `path-changed` event when the file is moved", ->
jasmine.unspy(window, "setTimeout")
fsUtils.remove(newPath) if fsUtils.exists(newPath)
fsUtils.move(filePath, newPath)
waitsFor "buffer path change", ->
eventHandler.callCount > 0
runs ->
expect(eventHandler).toHaveBeenCalledWith(bufferToChange)
describe "when the buffer's on-disk contents change", ->
filePath = null
beforeEach ->
filePath = "/tmp/tmp.txt"
fsUtils.writeSync(filePath, "first")
buffer.release()
buffer = project.bufferForPath(filePath).retain()
afterEach ->
buffer.release()
buffer = null
fsUtils.remove(filePath) if fsUtils.exists(filePath)
it "does not trigger a change event when Atom modifies the file", ->
buffer.insert([0,0], "HELLO!")
changeHandler = jasmine.createSpy("buffer changed")
buffer.on "changed", changeHandler
buffer.save()
waits 30
runs ->
expect(changeHandler).not.toHaveBeenCalled()
describe "when the buffer is in an unmodified state before the on-disk change", ->
it "changes the memory contents of the buffer to match the new disk contents and triggers a 'changed' event", ->
changeHandler = jasmine.createSpy('changeHandler')
buffer.on 'changed', changeHandler
fsUtils.writeSync(filePath, "second")
expect(changeHandler.callCount).toBe 0
waitsFor "file to trigger change event", ->
changeHandler.callCount > 0
runs ->
[event] = changeHandler.argsForCall[0]
expect(event.oldRange).toEqual [[0, 0], [0, 5]]
expect(event.newRange).toEqual [[0, 0], [0, 6]]
expect(event.oldText).toBe "first"
expect(event.newText).toBe "second"
expect(buffer.isModified()).toBeFalsy()
describe "when the buffer's memory contents differ from the *previous* disk contents", ->
it "leaves the buffer in a modified state (does not update its memory contents)", ->
fileChangeHandler = jasmine.createSpy('fileChange')
buffer.file.on 'contents-changed', fileChangeHandler
buffer.insert([0, 0], "a change")
fsUtils.writeSync(filePath, "second")
expect(fileChangeHandler.callCount).toBe 0
waitsFor "file to trigger 'contents-changed' event", ->
fileChangeHandler.callCount > 0
runs ->
expect(buffer.isModified()).toBeTruthy()
it "fires a single contents-conflicted event", ->
buffer.insert([0, 0], "a change")
buffer.save()
buffer.insert([0, 0], "a second change")
handler = jasmine.createSpy('fileChange')
fsUtils.writeSync(filePath, "second")
buffer.on 'contents-conflicted', handler
expect(handler.callCount).toBe 0
waitsFor ->
handler.callCount > 0
runs ->
expect(handler.callCount).toBe 1
describe "when the buffer's file is deleted (via another process)", ->
[filePath, bufferToDelete] = []
beforeEach ->
filePath = "/tmp/atom-file-to-delete.txt"
fsUtils.writeSync(filePath, 'delete me')
bufferToDelete = project.bufferForPath(filePath)
filePath = bufferToDelete.getPath() # symlinks may have been converted
expect(bufferToDelete.getPath()).toBe filePath
expect(bufferToDelete.isModified()).toBeFalsy()
removeHandler = jasmine.createSpy('removeHandler')
bufferToDelete.file.on 'removed', removeHandler
fsUtils.remove(filePath)
waitsFor "file to be removed", ->
removeHandler.callCount > 0
afterEach ->
bufferToDelete.destroy()
it "retains its path and reports the buffer as modified", ->
expect(bufferToDelete.getPath()).toBe filePath
expect(bufferToDelete.isModified()).toBeTruthy()
it "resumes watching of the file when it is re-saved", ->
bufferToDelete.save()
expect(bufferToDelete.fileExists()).toBeTruthy()
expect(bufferToDelete.isInConflict()).toBeFalsy()
fsUtils.writeSync(filePath, 'moo')
changeHandler = jasmine.createSpy('changeHandler')
bufferToDelete.on 'changed', changeHandler
waitsFor 'change event', ->
changeHandler.callCount > 0
describe "modified status", ->
it "reports the modified status changing to true or false after the user changes buffer", ->
modifiedHandler = jasmine.createSpy("modifiedHandler")
buffer.on 'modified-status-changed', modifiedHandler
expect(buffer.isModified()).toBeFalsy()
buffer.insert([0,0], "hi")
expect(buffer.isModified()).toBe true
advanceClock(buffer.stoppedChangingDelay)
expect(modifiedHandler).toHaveBeenCalledWith(true)
modifiedHandler.reset()
buffer.insert([0,2], "ho")
advanceClock(buffer.stoppedChangingDelay)
expect(modifiedHandler).not.toHaveBeenCalled()
modifiedHandler.reset()
buffer.undo()
buffer.undo()
advanceClock(buffer.stoppedChangingDelay)
expect(modifiedHandler).toHaveBeenCalledWith(false)
it "reports the modified status changing to true after the underlying file is deleted", ->
buffer.release()
filePath = "/tmp/atom-tmp-file"
fsUtils.writeSync(filePath, 'delete me')
buffer = project.bufferForPath(filePath)
modifiedHandler = jasmine.createSpy("modifiedHandler")
buffer.on 'modified-status-changed', modifiedHandler
fsUtils.remove(filePath)
waitsFor "modified status to change", -> modifiedHandler.callCount
runs -> expect(buffer.isModified()).toBe true
it "reports the modified status changing to false after a modified buffer is saved", ->
filePath = "/tmp/atom-tmp-file"
fsUtils.writeSync(filePath, '')
buffer.release()
buffer = project.bufferForPath(filePath)
modifiedHandler = jasmine.createSpy("modifiedHandler")
buffer.on 'modified-status-changed', modifiedHandler
buffer.insert([0,0], "hi")
advanceClock(buffer.stoppedChangingDelay)
expect(buffer.isModified()).toBe true
modifiedHandler.reset()
buffer.save()
expect(modifiedHandler).toHaveBeenCalledWith(false)
expect(buffer.isModified()).toBe false
modifiedHandler.reset()
buffer.insert([0, 0], 'x')
advanceClock(buffer.stoppedChangingDelay)
expect(modifiedHandler).toHaveBeenCalledWith(true)
expect(buffer.isModified()).toBe true
it "reports the modified status changing to false after a modified buffer is reloaded", ->
filePath = "/tmp/atom-tmp-file"
fsUtils.writeSync(filePath, '')
buffer.release()
buffer = project.bufferForPath(filePath)
modifiedHandler = jasmine.createSpy("modifiedHandler")
buffer.on 'modified-status-changed', modifiedHandler
buffer.insert([0,0], "hi")
advanceClock(buffer.stoppedChangingDelay)
expect(buffer.isModified()).toBe true
modifiedHandler.reset()
buffer.reload()
expect(modifiedHandler).toHaveBeenCalledWith(false)
expect(buffer.isModified()).toBe false
modifiedHandler.reset()
buffer.insert([0, 0], 'x')
advanceClock(buffer.stoppedChangingDelay)
expect(modifiedHandler).toHaveBeenCalledWith(true)
expect(buffer.isModified()).toBe true
it "reports the modified status changing to false after a buffer to a non-existent file is saved", ->
filePath = "/tmp/atom-tmp-file"
fsUtils.remove(filePath) if fsUtils.exists(filePath)
expect(fsUtils.exists(filePath)).toBeFalsy()
buffer.release()
buffer = project.bufferForPath(filePath)
modifiedHandler = jasmine.createSpy("modifiedHandler")
buffer.on 'modified-status-changed', modifiedHandler
buffer.insert([0,0], "hi")
advanceClock(buffer.stoppedChangingDelay)
expect(buffer.isModified()).toBe true
modifiedHandler.reset()
buffer.save()
expect(fsUtils.exists(filePath)).toBeTruthy()
expect(modifiedHandler).toHaveBeenCalledWith(false)
expect(buffer.isModified()).toBe false
modifiedHandler.reset()
buffer.insert([0, 0], 'x')
advanceClock(buffer.stoppedChangingDelay)
expect(modifiedHandler).toHaveBeenCalledWith(true)
expect(buffer.isModified()).toBe true
it "returns false for an empty buffer with no path", ->
buffer.release()
buffer = project.bufferForPath(null)
expect(buffer.isModified()).toBeFalsy()
it "returns true for a non-empty buffer with no path", ->
buffer.release()
buffer = project.bufferForPath(null)
buffer.setText('a')
expect(buffer.isModified()).toBeTruthy()
buffer.setText('\n')
expect(buffer.isModified()).toBeTruthy()
describe ".getLines()", ->
it "returns an array of lines in the text contents", ->
expect(buffer.getLines().length).toBe fileContents.split("\n").length
expect(buffer.getLines().join('\n')).toBe fileContents
describe ".change(range, string)", ->
changeHandler = null
beforeEach ->
changeHandler = jasmine.createSpy('changeHandler')
buffer.on 'changed', changeHandler
describe "when used to insert (called with an empty range and a non-empty string)", ->
describe "when the given string has no newlines", ->
it "inserts the string at the location of the given range", ->
range = [[3, 4], [3, 4]]
buffer.change range, "foo"
expect(buffer.lineForRow(2)).toBe " if (items.length <= 1) return items;"
expect(buffer.lineForRow(3)).toBe " foovar pivot = items.shift(), current, left = [], right = [];"
expect(buffer.lineForRow(4)).toBe " while(items.length > 0) {"
expect(changeHandler).toHaveBeenCalled()
[event] = changeHandler.argsForCall[0]
expect(event.oldRange).toEqual range
expect(event.newRange).toEqual [[3, 4], [3, 7]]
expect(event.oldText).toBe ""
expect(event.newText).toBe "foo"
describe "when the given string has newlines", ->
it "inserts the lines at the location of the given range", ->
range = [[3, 4], [3, 4]]
buffer.change range, "foo\n\nbar\nbaz"
expect(buffer.lineForRow(2)).toBe " if (items.length <= 1) return items;"
expect(buffer.lineForRow(3)).toBe " foo"
expect(buffer.lineForRow(4)).toBe ""
expect(buffer.lineForRow(5)).toBe "bar"
expect(buffer.lineForRow(6)).toBe "bazvar pivot = items.shift(), current, left = [], right = [];"
expect(buffer.lineForRow(7)).toBe " while(items.length > 0) {"
expect(changeHandler).toHaveBeenCalled()
[event] = changeHandler.argsForCall[0]
expect(event.oldRange).toEqual range
expect(event.newRange).toEqual [[3, 4], [6, 3]]
expect(event.oldText).toBe ""
expect(event.newText).toBe "foo\n\nbar\nbaz"
describe "when used to remove (called with a non-empty range and an empty string)", ->
describe "when the range is contained within a single line", ->
it "removes the characters within the range", ->
range = [[3, 4], [3, 7]]
buffer.change range, ""
expect(buffer.lineForRow(2)).toBe " if (items.length <= 1) return items;"
expect(buffer.lineForRow(3)).toBe " pivot = items.shift(), current, left = [], right = [];"
expect(buffer.lineForRow(4)).toBe " while(items.length > 0) {"
expect(changeHandler).toHaveBeenCalled()
[event] = changeHandler.argsForCall[0]
expect(event.oldRange).toEqual range
expect(event.newRange).toEqual [[3, 4], [3, 4]]
expect(event.oldText).toBe "var"
expect(event.newText).toBe ""
describe "when the range spans 2 lines", ->
it "removes the characters within the range and joins the lines", ->
range = [[3, 16], [4, 4]]
buffer.change range, ""
expect(buffer.lineForRow(2)).toBe " if (items.length <= 1) return items;"
expect(buffer.lineForRow(3)).toBe " var pivot = while(items.length > 0) {"
expect(buffer.lineForRow(4)).toBe " current = items.shift();"
expect(changeHandler).toHaveBeenCalled()
[event] = changeHandler.argsForCall[0]
expect(event.oldRange).toEqual range
expect(event.newRange).toEqual [[3, 16], [3, 16]]
expect(event.oldText).toBe "items.shift(), current, left = [], right = [];\n "
expect(event.newText).toBe ""
describe "when the range spans more than 2 lines", ->
it "removes the characters within the range, joining the first and last line and removing the lines in-between", ->
buffer.change [[3, 16], [11, 9]], ""
expect(buffer.lineForRow(2)).toBe " if (items.length <= 1) return items;"
expect(buffer.lineForRow(3)).toBe " var pivot = sort(Array.apply(this, arguments));"
expect(buffer.lineForRow(4)).toBe "};"
describe "when used to replace text with other text (called with non-empty range and non-empty string)", ->
it "replaces the old text with the new text", ->
range = [[3, 16], [11, 9]]
oldText = buffer.getTextInRange(range)
buffer.change range, "foo\nbar"
expect(buffer.lineForRow(2)).toBe " if (items.length <= 1) return items;"
expect(buffer.lineForRow(3)).toBe " var pivot = foo"
expect(buffer.lineForRow(4)).toBe "barsort(Array.apply(this, arguments));"
expect(buffer.lineForRow(5)).toBe "};"
expect(changeHandler).toHaveBeenCalled()
[event] = changeHandler.argsForCall[0]
expect(event.oldRange).toEqual range
expect(event.newRange).toEqual [[3, 16], [4, 3]]
expect(event.oldText).toBe oldText
expect(event.newText).toBe "foo\nbar"
it "allows a 'changed' event handler to safely undo the change", ->
buffer.one 'changed', -> buffer.undo()
buffer.change([0, 0], "hello")
expect(buffer.lineForRow(0)).toBe "var quicksort = function () {"
describe ".setText(text)", ->
it "changes the entire contents of the buffer and emits a change event", ->
lastRow = buffer.getLastRow()
expectedPreRange = [[0,0], [lastRow, buffer.lineForRow(lastRow).length]]
changeHandler = jasmine.createSpy('changeHandler')
buffer.on 'changed', changeHandler
newText = "I know you are.\nBut what am I?"
buffer.setText(newText)
expect(buffer.getText()).toBe newText
expect(changeHandler).toHaveBeenCalled()
[event] = changeHandler.argsForCall[0]
expect(event.newText).toBe newText
expect(event.oldRange).toEqual expectedPreRange
expect(event.newRange).toEqual [[0, 0], [1, 14]]
describe ".save()", ->
saveBuffer = null
afterEach ->
saveBuffer.release()
describe "when the buffer has a path", ->
filePath = null
beforeEach ->
filePath = '/tmp/temp.txt'
fsUtils.writeSync(filePath, "")
saveBuffer = project.bufferForPath(filePath)
saveBuffer.setText("blah")
it "saves the contents of the buffer to the path", ->
saveBuffer.setText 'Buffer contents!'
saveBuffer.save()
expect(fsUtils.read(filePath)).toEqual 'Buffer contents!'
it "fires will-be-saved and saved events around the call to fsUtils.writeSync", ->
events = []
beforeSave1 = -> events.push('beforeSave1')
beforeSave2 = -> events.push('beforeSave2')
afterSave1 = -> events.push('afterSave1')
afterSave2 = -> events.push('afterSave2')
saveBuffer.on 'will-be-saved', beforeSave1
saveBuffer.on 'will-be-saved', beforeSave2
spyOn(fsUtils, 'writeSync').andCallFake -> events.push 'fsUtils.writeSync'
saveBuffer.on 'saved', afterSave1
saveBuffer.on 'saved', afterSave2
saveBuffer.save()
expect(events).toEqual ['beforeSave1', 'beforeSave2', 'fsUtils.writeSync', 'afterSave1', 'afterSave2']
it "fires will-reload and reloaded events when reloaded", ->
events = []
saveBuffer.on 'will-reload', -> events.push 'will-reload'
saveBuffer.on 'reloaded', -> events.push 'reloaded'
saveBuffer.reload()
expect(events).toEqual ['will-reload', 'reloaded']
describe "when the buffer has no path", ->
it "throws an exception", ->
saveBuffer = project.bufferForPath(null)
saveBuffer.setText "hi"
expect(-> saveBuffer.save()).toThrow()
describe "reload()", ->
it "reloads current text from disk and clears any conflicts", ->
buffer.setText("abc")
buffer.conflict = true
buffer.reload()
expect(buffer.isModified()).toBeFalsy()
expect(buffer.isInConflict()).toBeFalsy()
expect(buffer.getText()).toBe(fileContents)
describe ".saveAs(path)", ->
[filePath, saveAsBuffer] = []
afterEach ->
saveAsBuffer.release()
it "saves the contents of the buffer to the path", ->
filePath = '/tmp/temp.txt'
fsUtils.remove filePath if fsUtils.exists(filePath)
saveAsBuffer = project.bufferForPath(null).retain()
eventHandler = jasmine.createSpy('eventHandler')
saveAsBuffer.on 'path-changed', eventHandler
saveAsBuffer.setText 'Buffer contents!'
saveAsBuffer.saveAs(filePath)
expect(fsUtils.read(filePath)).toEqual 'Buffer contents!'
expect(eventHandler).toHaveBeenCalledWith(saveAsBuffer)
it "stops listening to events on previous path and begins listening to events on new path", ->
originalPath = "/tmp/original.txt"
newPath = "/tmp/new.txt"
fsUtils.writeSync(originalPath, "")
saveAsBuffer = project.bufferForPath(originalPath).retain()
changeHandler = jasmine.createSpy('changeHandler')
saveAsBuffer.on 'changed', changeHandler
saveAsBuffer.saveAs(newPath)
expect(changeHandler).not.toHaveBeenCalled()
fsUtils.writeSync(originalPath, "should not trigger buffer event")
waits 20
runs ->
expect(changeHandler).not.toHaveBeenCalled()
fsUtils.writeSync(newPath, "should trigger buffer event")
waitsFor ->
changeHandler.callCount > 0
describe ".getRelativePath()", ->
[filePath, newPath, bufferToChange, eventHandler] = []
beforeEach ->
filePath = path.join(fsUtils.resolveOnLoadPath("fixtures"), "atom-manipulate-me")
newPath = "#{filePath}-i-moved"
fsUtils.writeSync(filePath, "")
bufferToChange = project.bufferForPath(filePath)
eventHandler = jasmine.createSpy('eventHandler')
bufferToChange.on 'path-changed', eventHandler
afterEach ->
bufferToChange.destroy()
fsUtils.remove(filePath) if fsUtils.exists(filePath)
fsUtils.remove(newPath) if fsUtils.exists(newPath)
it "updates when the text buffer's file is moved", ->
expect(bufferToChange.getRelativePath()).toBe('atom-manipulate-me')
jasmine.unspy(window, "setTimeout")
eventHandler.reset()
fsUtils.move(filePath, newPath)
waitsFor "buffer path change", ->
eventHandler.callCount > 0
runs ->
expect(bufferToChange.getRelativePath()).toBe('atom-manipulate-me-i-moved')
describe ".getTextInRange(range)", ->
describe "when range is empty", ->
it "returns an empty string", ->
range = [[1,1], [1,1]]
expect(buffer.getTextInRange(range)).toBe ""
describe "when range spans one line", ->
it "returns characters in range", ->
range = [[2,8], [2,13]]
expect(buffer.getTextInRange(range)).toBe "items"
lineLength = buffer.lineForRow(2).length
range = [[2,0], [2,lineLength]]
expect(buffer.getTextInRange(range)).toBe " if (items.length <= 1) return items;"
describe "when range spans multiple lines", ->
it "returns characters in range (including newlines)", ->
lineLength = buffer.lineForRow(2).length
range = [[2,0], [3,0]]
expect(buffer.getTextInRange(range)).toBe " if (items.length <= 1) return items;\n"
lineLength = buffer.lineForRow(2).length
range = [[2,10], [4,10]]
expect(buffer.getTextInRange(range)).toBe "ems.length <= 1) return items;\n var pivot = items.shift(), current, left = [], right = [];\n while("
describe "when the range starts before the start of the buffer", ->
it "clips the range to the start of the buffer", ->
expect(buffer.getTextInRange([[-Infinity, -Infinity], [0, Infinity]])).toBe buffer.lineForRow(0)
describe "when the range ends after the end of the buffer", ->
it "clips the range to the end of the buffer", ->
expect(buffer.getTextInRange([[12], [13, Infinity]])).toBe buffer.lineForRow(12)
describe ".scanInRange(range, regex, fn)", ->
describe "when given a regex with a ignore case flag", ->
it "does a case-insensitive search", ->
matches = []
buffer.scanInRange /cuRRent/i, [[0,0], [12,0]], ({match, range}) ->
matches.push(match)
expect(matches.length).toBe 1
describe "when given a regex with no global flag", ->
it "calls the iterator with the first match for the given regex in the given range", ->
matches = []
ranges = []
buffer.scanInRange /cu(rr)ent/, [[4,0], [6,44]], ({match, range}) ->
matches.push(match)
ranges.push(range)
expect(matches.length).toBe 1
expect(ranges.length).toBe 1
expect(matches[0][0]).toBe 'current'
expect(matches[0][1]).toBe 'rr'
expect(ranges[0]).toEqual [[5,6], [5,13]]
describe "when given a regex with a global flag", ->
it "calls the iterator with each match for the given regex in the given range", ->
matches = []
ranges = []
buffer.scanInRange /cu(rr)ent/g, [[4,0], [6,59]], ({match, range}) ->
matches.push(match)
ranges.push(range)
expect(matches.length).toBe 3
expect(ranges.length).toBe 3
expect(matches[0][0]).toBe 'current'
expect(matches[0][1]).toBe 'rr'
expect(ranges[0]).toEqual [[5,6], [5,13]]
expect(matches[1][0]).toBe 'current'
expect(matches[1][1]).toBe 'rr'
expect(ranges[1]).toEqual [[6,6], [6,13]]
expect(matches[2][0]).toBe 'current'
expect(matches[2][1]).toBe 'rr'
expect(ranges[2]).toEqual [[6,34], [6,41]]
describe "when the last regex match exceeds the end of the range", ->
describe "when the portion of the match within the range also matches the regex", ->
it "calls the iterator with the truncated match", ->
matches = []
ranges = []
buffer.scanInRange /cu(r*)/g, [[4,0], [6,9]], ({match, range}) ->
matches.push(match)
ranges.push(range)
expect(matches.length).toBe 2
expect(ranges.length).toBe 2
expect(matches[0][0]).toBe 'curr'
expect(matches[0][1]).toBe 'rr'
expect(ranges[0]).toEqual [[5,6], [5,10]]
expect(matches[1][0]).toBe 'cur'
expect(matches[1][1]).toBe 'r'
expect(ranges[1]).toEqual [[6,6], [6,9]]
describe "when the portion of the match within the range does not matches the regex", ->
it "calls the iterator with the truncated match", ->
matches = []
ranges = []
buffer.scanInRange /cu(r*)e/g, [[4,0], [6,9]], ({match, range}) ->
matches.push(match)
ranges.push(range)
expect(matches.length).toBe 1
expect(ranges.length).toBe 1
expect(matches[0][0]).toBe 'curre'
expect(matches[0][1]).toBe 'rr'
expect(ranges[0]).toEqual [[5,6], [5,11]]
describe "when the iterator calls the 'replace' control function with a replacement string", ->
it "replaces each occurrence of the regex match with the string", ->
ranges = []
buffer.scanInRange /cu(rr)ent/g, [[4,0], [6,59]], ({range, replace}) ->
ranges.push(range)
replace("foo")
expect(ranges[0]).toEqual [[5,6], [5,13]]
expect(ranges[1]).toEqual [[6,6], [6,13]]
expect(ranges[2]).toEqual [[6,30], [6,37]]
expect(buffer.lineForRow(5)).toBe ' foo = items.shift();'
expect(buffer.lineForRow(6)).toBe ' foo < pivot ? left.push(foo) : right.push(current);'
it "allows the match to be replaced with the empty string", ->
buffer.scanInRange /current/g, [[4,0], [6,59]], ({replace}) ->
replace("")
expect(buffer.lineForRow(5)).toBe ' = items.shift();'
expect(buffer.lineForRow(6)).toBe ' < pivot ? left.push() : right.push(current);'
describe "when the iterator calls the 'stop' control function", ->
it "stops the traversal", ->
ranges = []
buffer.scanInRange /cu(rr)ent/g, [[4,0], [6,59]], ({range, stop}) ->
ranges.push(range)
stop() if ranges.length == 2
expect(ranges.length).toBe 2
describe ".backwardsScanInRange(range, regex, fn)", ->
describe "when given a regex with no global flag", ->
it "calls the iterator with the last match for the given regex in the given range", ->
matches = []
ranges = []
buffer.backwardsScanInRange /cu(rr)ent/, [[4,0], [6,44]], ({match, range}) ->
matches.push(match)
ranges.push(range)
expect(matches.length).toBe 1
expect(ranges.length).toBe 1
expect(matches[0][0]).toBe 'current'
expect(matches[0][1]).toBe 'rr'
expect(ranges[0]).toEqual [[6,34], [6,41]]
describe "when given a regex with a global flag", ->
it "calls the iterator with each match for the given regex in the given range, starting with the last match", ->
matches = []
ranges = []
buffer.backwardsScanInRange /cu(rr)ent/g, [[4,0], [6,59]], ({match, range}) ->
matches.push(match)
ranges.push(range)
expect(matches.length).toBe 3
expect(ranges.length).toBe 3
expect(matches[0][0]).toBe 'current'
expect(matches[0][1]).toBe 'rr'
expect(ranges[0]).toEqual [[6,34], [6,41]]
expect(matches[1][0]).toBe 'current'
expect(matches[1][1]).toBe 'rr'
expect(ranges[1]).toEqual [[6,6], [6,13]]
expect(matches[2][0]).toBe 'current'
expect(matches[2][1]).toBe 'rr'
expect(ranges[2]).toEqual [[5,6], [5,13]]
describe "when the iterator calls the 'replace' control function with a replacement string", ->
it "replaces each occurrence of the regex match with the string", ->
ranges = []
buffer.backwardsScanInRange /cu(rr)ent/g, [[4,0], [6,59]], ({range, replace}) ->
ranges.push(range)
replace("foo") unless range.start.isEqual([6,6])
expect(ranges[0]).toEqual [[6,34], [6,41]]
expect(ranges[1]).toEqual [[6,6], [6,13]]
expect(ranges[2]).toEqual [[5,6], [5,13]]
expect(buffer.lineForRow(5)).toBe ' foo = items.shift();'
expect(buffer.lineForRow(6)).toBe ' current < pivot ? left.push(foo) : right.push(current);'
describe "when the iterator calls the 'stop' control function", ->
it "stops the traversal", ->
ranges = []
buffer.backwardsScanInRange /cu(rr)ent/g, [[4,0], [6,59]], ({range, stop}) ->
ranges.push(range)
stop() if ranges.length == 2
expect(ranges.length).toBe 2
expect(ranges[0]).toEqual [[6,34], [6,41]]
expect(ranges[1]).toEqual [[6,6], [6,13]]
describe ".characterIndexForPosition(position)", ->
it "returns the total number of characters that precede the given position", ->
expect(buffer.characterIndexForPosition([0, 0])).toBe 0
expect(buffer.characterIndexForPosition([0, 1])).toBe 1
expect(buffer.characterIndexForPosition([0, 29])).toBe 29
expect(buffer.characterIndexForPosition([1, 0])).toBe 30
expect(buffer.characterIndexForPosition([2, 0])).toBe 61
expect(buffer.characterIndexForPosition([12, 2])).toBe 408
expect(buffer.characterIndexForPosition([Infinity])).toBe 408
describe "when the buffer contains crlf line endings", ->
it "returns the total number of characters that precede the given position", ->
buffer.setText("line1\r\nline2\nline3\r\nline4")
expect(buffer.characterIndexForPosition([1])).toBe 7
expect(buffer.characterIndexForPosition([2])).toBe 13
expect(buffer.characterIndexForPosition([3])).toBe 20
describe ".positionForCharacterIndex(position)", ->
it "returns the position based on character index", ->
expect(buffer.positionForCharacterIndex(0)).toEqual [0, 0]
expect(buffer.positionForCharacterIndex(1)).toEqual [0, 1]
expect(buffer.positionForCharacterIndex(29)).toEqual [0, 29]
expect(buffer.positionForCharacterIndex(30)).toEqual [1, 0]
expect(buffer.positionForCharacterIndex(61)).toEqual [2, 0]
expect(buffer.positionForCharacterIndex(408)).toEqual [12, 2]
describe "when the buffer contains crlf line endings", ->
it "returns the position based on character index", ->
buffer.setText("line1\r\nline2\nline3\r\nline4")
expect(buffer.positionForCharacterIndex(7)).toEqual [1, 0]
expect(buffer.positionForCharacterIndex(13)).toEqual [2, 0]
expect(buffer.positionForCharacterIndex(20)).toEqual [3, 0]
describe ".usesSoftTabs()", ->
it "returns true if the first indented line begins with tabs", ->
buffer.setText("function() {\n foo();\n}")
expect(buffer.usesSoftTabs()).toBeTruthy()
buffer.setText("function() {\n\tfoo();\n}")
expect(buffer.usesSoftTabs()).toBeFalsy()
buffer.setText("")
expect(buffer.usesSoftTabs()).toBeUndefined()
describe ".isEmpty()", ->
it "returns true for an empty buffer", ->
buffer.setText('')
expect(buffer.isEmpty()).toBeTruthy()
it "returns false for a non-empty buffer", ->
buffer.setText('a')
expect(buffer.isEmpty()).toBeFalsy()
buffer.setText('a\nb\nc')
expect(buffer.isEmpty()).toBeFalsy()
buffer.setText('\n')
expect(buffer.isEmpty()).toBeFalsy()
describe "'contents-modified' event", ->
it "triggers the 'contents-modified' event with the current modified status when the buffer changes, rate-limiting events with a delay", ->
delay = buffer.stoppedChangingDelay
contentsModifiedHandler = jasmine.createSpy("contentsModifiedHandler")
buffer.on 'contents-modified', contentsModifiedHandler
buffer.insert([0, 0], 'a')
expect(contentsModifiedHandler).not.toHaveBeenCalled()
advanceClock(delay / 2)
buffer.insert([0, 0], 'b')
expect(contentsModifiedHandler).not.toHaveBeenCalled()
advanceClock(delay / 2)
expect(contentsModifiedHandler).not.toHaveBeenCalled()
advanceClock(delay / 2)
expect(contentsModifiedHandler).toHaveBeenCalledWith(true)
contentsModifiedHandler.reset()
buffer.undo()
buffer.undo()
advanceClock(delay)
expect(contentsModifiedHandler).toHaveBeenCalledWith(false)
describe ".append(text)", ->
it "adds text to the end of the buffer", ->
buffer.setText("")
buffer.append("a")
expect(buffer.getText()).toBe "a"
buffer.append("b\nc")
expect(buffer.getText()).toBe "ab\nc"
describe "line ending support", ->
describe ".getText()", ->
it "returns the text with the corrent line endings for each row", ->
buffer.setText("a\r\nb\nc")
expect(buffer.getText()).toBe "a\r\nb\nc"
buffer.setText("a\r\nb\nc\n")
expect(buffer.getText()).toBe "a\r\nb\nc\n"
describe "when editing a line", ->
it "preserves the existing line ending", ->
buffer.setText("a\r\nb\nc")
buffer.insert([0, 1], "1")
expect(buffer.getText()).toBe "a1\r\nb\nc"
describe "when inserting text with multiple lines", ->
describe "when the current line has a line ending", ->
it "uses the same line ending as the line where the text is inserted", ->
buffer.setText("a\r\n")
buffer.insert([0, 1], "hello\n1\n\n2")
expect(buffer.getText()).toBe "ahello\r\n1\r\n\r\n2\r\n"
describe "when the current line has no line ending (because it's the last line of the buffer)", ->
describe "when the buffer contains only a single line", ->
it "honors the line endings in the inserted text", ->
buffer.setText("initialtext")
buffer.append("hello\n1\r\n2\n")
expect(buffer.getText()).toBe "initialtexthello\n1\r\n2\n"
describe "when the buffer contains a preceding line", ->
it "uses the line ending of the preceding line", ->
buffer.setText("\ninitialtext")
buffer.append("hello\n1\r\n2\n")
expect(buffer.getText()).toBe "\ninitialtexthello\n1\n2\n"
describe "serialization", ->
buffer2 = null
afterEach ->
buffer2?.release()
describe "when the serialized buffer had no unsaved changes", ->
it "loads the current contents of the file at the serialized path", ->
expect(buffer.isModified()).toBeFalsy()
state = buffer.serialize()
state.get('text').insert([0, 0], 'simulate divergence of on-disk contents from serialized contents')
buffer2 = deserialize(state, {project})
expect(buffer2.isModified()).toBeFalsy()
expect(buffer2.getPath()).toBe(buffer.getPath())
expect(buffer2.getText()).toBe(buffer.getText())
describe "when the serialized buffer had unsaved changes", ->
it "restores the previous unsaved state of the buffer", ->
previousText = buffer.getText()
buffer.setText("abc")
state = buffer.serialize()
expect(state.getObject('text')).toBe 'abc'
buffer2 = deserialize(state, {project})
expect(buffer2.getPath()).toBe(buffer.getPath())
expect(buffer2.getText()).toBe(buffer.getText())
expect(buffer2.isModified()).toBeTruthy()
buffer2.setText(previousText)
expect(buffer2.isModified()).toBeFalsy()
describe "when the serialized buffer was unsaved and had no path", ->
it "restores the previous unsaved state of the buffer", ->
buffer.setPath(undefined)
buffer.setText("abc")
state = buffer.serialize()
expect(state.get('path')).toBeUndefined()
expect(state.getObject('text')).toBe 'abc'
buffer2 = deserialize(state)
expect(buffer2.getPath()).toBeUndefined()
expect(buffer2.getText()).toBe("abc")
describe "when the buffer has remote markers", ->
[buffer2, buffer3] = []
afterEach ->
buffer2.destroy()
buffer3.destroy()
it "does not include them in the serialized state", ->
doc1 = buffer.getState()
doc2 = doc1.clone(new Site(2))
doc1.connect(doc2)
buffer2 = deserialize(doc2, {project})
buffer.markPosition [1, 0]
buffer2.markPosition [2, 0]
expect(buffer.getMarkerCount()).toBe 2
expect(buffer.getMarkers()[0].isRemote()).toBe false
expect(buffer.getMarkers()[1].isRemote()).toBe true
buffer3 = deserialize(buffer.serialize(), {project})
expect(buffer3.getMarkerCount()).toBe 1
expect(buffer3.getMarkers()[0].isRemote()).toBe false
expect(buffer3.getMarkers()[0].getRange()).toEqual [[1, 0], [1, 0]]