           expect(lineNumberHasClass(9, 'fancy-class')).toBe true
           expect(lineNumberHasClass(9, 'nope-class')).toBe false
 
-        it "handles updates to gutter decorations", ->
+        it "renders updates to gutter decorations", ->
           editor.addDecorationToBufferRow(2, type: 'gutter', class: 'fancy-class')
           editor.addDecorationToBufferRow(2, type: 'someother-type', class: 'nope-class')
 

          [node]

  describe "gutter rendering", ->
    it "renders the currently-visible line numbers", ->
      node.style.height = 4.5 * lineHeightInPixels + 'px'
      component.measureScrollView()

      expect(component.lineNumberNodeForScreenRow(9).textContent).toBe "10"
      expect(gutterNode.offsetWidth).toBe initialGutterWidth

    describe "rendering fold decorations", ->
      it "adds the foldable class to line numbers when the line is foldable", ->
        expect(lineNumberHasClass(0, 'foldable')).toBe true
        expect(lineNumberHasClass(1, 'foldable')).toBe true
        expect(lineNumberHasClass(2, 'foldable')).toBe false
        expect(lineNumberHasClass(3, 'foldable')).toBe false
        expect(lineNumberHasClass(4, 'foldable')).toBe true
        expect(lineNumberHasClass(5, 'foldable')).toBe false

      it "updates the foldable class on the correct line numbers when the foldable positions change", ->
        editor.getBuffer().insert([0, 0], '\n')
        expect(lineNumberHasClass(0, 'foldable')).toBe false
        expect(lineNumberHasClass(1, 'foldable')).toBe true
        expect(lineNumberHasClass(2, 'foldable')).toBe true
        expect(lineNumberHasClass(3, 'foldable')).toBe false
        expect(lineNumberHasClass(4, 'foldable')).toBe false
        expect(lineNumberHasClass(5, 'foldable')).toBe true
        expect(lineNumberHasClass(6, 'foldable')).toBe false

      it "adds, updates and removes the folded class on the correct line number nodes", ->
        editor.foldBufferRow(4)
        expect(lineNumberHasClass(4, 'folded')).toBe true

        editor.getBuffer().insert([0, 0], '\n')
        expect(lineNumberHasClass(4, 'folded')).toBe false
        expect(lineNumberHasClass(5, 'folded')).toBe true

        editor.unfoldBufferRow(5)
        expect(lineNumberHasClass(5, 'folded')).toBe false

    describe "when decorations are used", ->
      describe "when decorations are applied to buffer rows", ->
        it "renders line number classes based on the decorations on their buffer row", ->
          node.style.height = 4.5 * lineHeightInPixels + 'px'
