pulsar/spec/app/language-mode-spec.coffee

Project = require 'project'
Buffer = require 'text-buffer'
EditSession = require 'edit-session'

describe "LanguageMode", ->
  [editSession, buffer, languageMode] = []

  afterEach ->
    editSession.destroy()

  describe "common behavior", ->
    beforeEach ->
      atom.activatePackage('javascript.tmbundle', sync: true)
      editSession = project.buildEditSession('sample.js', autoIndent: false)
      { buffer, languageMode } = editSession

    describe "language detection", ->
      it "uses the file name as the file type if it has no extension", ->
        jsEditSession = project.buildEditSession('js', autoIndent: false)
        expect(jsEditSession.languageMode.grammar.name).toBe "JavaScript"
        jsEditSession.destroy()

  describe "javascript", ->
    beforeEach ->
      atom.activatePackage('javascript.tmbundle', sync: true)
      editSession = project.buildEditSession('sample.js', autoIndent: false)
      { buffer, languageMode } = editSession

    describe ".toggleLineCommentsForBufferRows(start, end)", ->
      it "comments/uncomments lines in the given range", ->
        languageMode.toggleLineCommentsForBufferRows(4, 7)
        expect(buffer.lineForRow(4)).toBe "//     while(items.length > 0) {"
        expect(buffer.lineForRow(5)).toBe "//       current = items.shift();"
        expect(buffer.lineForRow(6)).toBe "//       current < pivot ? left.push(current) : right.push(current);"
        expect(buffer.lineForRow(7)).toBe "//     }"

        languageMode.toggleLineCommentsForBufferRows(4, 5)
        expect(buffer.lineForRow(4)).toBe "    while(items.length > 0) {"
        expect(buffer.lineForRow(5)).toBe "      current = items.shift();"
        expect(buffer.lineForRow(6)).toBe "//       current < pivot ? left.push(current) : right.push(current);"
        expect(buffer.lineForRow(7)).toBe "//     }"

    describe "fold suggestion", ->
      describe ".doesBufferRowStartFold(bufferRow)", ->
        it "returns true only when the buffer row starts a foldable region", ->
          expect(languageMode.doesBufferRowStartFold(0)).toBeTruthy()
          expect(languageMode.doesBufferRowStartFold(1)).toBeTruthy()
          expect(languageMode.doesBufferRowStartFold(2)).toBeFalsy()
          expect(languageMode.doesBufferRowStartFold(3)).toBeFalsy()

      describe ".rowRangeForFoldAtBufferRow(bufferRow)", ->
        it "returns the start/end rows of the foldable region starting at the given row", ->
          expect(languageMode.rowRangeForFoldAtBufferRow(0)).toEqual [0, 12]
          expect(languageMode.rowRangeForFoldAtBufferRow(1)).toEqual [1, 9]
          expect(languageMode.rowRangeForFoldAtBufferRow(2)).toBeNull()
          expect(languageMode.rowRangeForFoldAtBufferRow(4)).toEqual [4, 7]

    describe "suggestedIndentForBufferRow", ->
      it "returns the suggested indentation based on auto-indent/outdent rules", ->
        expect(languageMode.suggestedIndentForBufferRow(0)).toBe 0
        expect(languageMode.suggestedIndentForBufferRow(1)).toBe 1
        expect(languageMode.suggestedIndentForBufferRow(2)).toBe 2
        expect(languageMode.suggestedIndentForBufferRow(9)).toBe 1

  describe "coffeescript", ->
    beforeEach ->
      atom.activatePackage('coffee-script-tmbundle', sync: true)
      editSession = project.buildEditSession('coffee.coffee', autoIndent: false)
      { buffer, languageMode } = editSession

    describe ".toggleLineCommentsForBufferRows(start, end)", ->
      it "comments/uncomments lines in the given range", ->
        languageMode.toggleLineCommentsForBufferRows(4, 7)
        expect(buffer.lineForRow(4)).toBe "#     pivot = items.shift()"
        expect(buffer.lineForRow(5)).toBe "#     left = []"
        expect(buffer.lineForRow(6)).toBe "#     right = []"
        expect(buffer.lineForRow(7)).toBe "# "

        languageMode.toggleLineCommentsForBufferRows(4, 5)
        expect(buffer.lineForRow(4)).toBe "    pivot = items.shift()"
        expect(buffer.lineForRow(5)).toBe "    left = []"
        expect(buffer.lineForRow(6)).toBe "#     right = []"
        expect(buffer.lineForRow(7)).toBe "# "

    describe "fold suggestion", ->
      describe ".doesBufferRowStartFold(bufferRow)", ->
        it "returns true only when the buffer row starts a foldable region", ->
          expect(languageMode.doesBufferRowStartFold(0)).toBeTruthy()
          expect(languageMode.doesBufferRowStartFold(1)).toBeTruthy()
          expect(languageMode.doesBufferRowStartFold(2)).toBeFalsy()
          expect(languageMode.doesBufferRowStartFold(3)).toBeFalsy()
          expect(languageMode.doesBufferRowStartFold(19)).toBeTruthy()

      describe ".rowRangeForFoldAtBufferRow(bufferRow)", ->
        it "returns the start/end rows of the foldable region starting at the given row", ->
          expect(languageMode.rowRangeForFoldAtBufferRow(0)).toEqual [0, 20]
          expect(languageMode.rowRangeForFoldAtBufferRow(1)).toEqual [1, 17]
          expect(languageMode.rowRangeForFoldAtBufferRow(2)).toBeNull()
          expect(languageMode.rowRangeForFoldAtBufferRow(19)).toEqual [19, 20]

  describe "css", ->
    beforeEach ->
      atom.activatePackage('css.tmbundle', sync: true)
      editSession = project.buildEditSession('css.css', autoIndent: false)
      { buffer, languageMode } = editSession

    describe ".toggleLineCommentsForBufferRows(start, end)", ->
      it "comments/uncomments lines in the given range", ->
        languageMode.toggleLineCommentsForBufferRows(0, 1)
        expect(buffer.lineForRow(0)).toBe "/*body {"
        expect(buffer.lineForRow(1)).toBe "  font-size: 1234px;*/"
        expect(buffer.lineForRow(2)).toBe "  width: 110%;"
        expect(buffer.lineForRow(3)).toBe "  font-weight: bold !important;"

        languageMode.toggleLineCommentsForBufferRows(2, 2)
        expect(buffer.lineForRow(0)).toBe "/*body {"
        expect(buffer.lineForRow(1)).toBe "  font-size: 1234px;*/"
        expect(buffer.lineForRow(2)).toBe "/*  width: 110%;*/"
        expect(buffer.lineForRow(3)).toBe "  font-weight: bold !important;"

        languageMode.toggleLineCommentsForBufferRows(0, 1)
        expect(buffer.lineForRow(0)).toBe "body {"
        expect(buffer.lineForRow(1)).toBe "  font-size: 1234px;"
        expect(buffer.lineForRow(2)).toBe "/*  width: 110%;*/"
        expect(buffer.lineForRow(3)).toBe "  font-weight: bold !important;"

      it "uncomments lines with leading whitespace", ->
        buffer.change([[2, 0], [2, Infinity]], "  /*width: 110%;*/")
        languageMode.toggleLineCommentsForBufferRows(2, 2)
        expect(buffer.lineForRow(2)).toBe "  width: 110%;"

      it "uncomments lines with trailing whitespace", ->
        buffer.change([[2, 0], [2, Infinity]], "/*width: 110%;*/  ")
        languageMode.toggleLineCommentsForBufferRows(2, 2)
        expect(buffer.lineForRow(2)).toBe "width: 110%;  "

      it "uncomments lines with leading and trailing whitespace", ->
        buffer.change([[2, 0], [2, Infinity]], "   /*width: 110%;*/ ")
        languageMode.toggleLineCommentsForBufferRows(2, 2)
        expect(buffer.lineForRow(2)).toBe "   width: 110%; "