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#= require line_highlighter
describe 'LineHighlighter', ->
fixture.preload('line_highlighter.html')
clickLine = (number, eventData = {}) ->
if $.isEmptyObject(eventData)
$("#L#{number}").mousedown().click()
else
e = $.Event 'mousedown', eventData
$("#L#{number}").trigger(e).click()
beforeEach ->
fixture.load('line_highlighter.html')
@class = new LineHighlighter()
@css = @class.highlightClass
@spies = {
__setLocationHash__: spyOn(@class, '__setLocationHash__').and.callFake ->
}
describe 'behavior', ->
it 'highlights one line given in the URL hash', ->
new LineHighlighter('#L13')
expect($('#LC13')).toHaveClass(@css)
it 'highlights a range of lines given in the URL hash', ->
new LineHighlighter('#L5-25')
expect($(".#{@css}").length).toBe(21)
expect($("#LC#{line}")).toHaveClass(@css) for line in [5..25]
it 'scrolls to the first highlighted line on initial load', ->
spy = spyOn($, 'scrollTo')
new LineHighlighter('#L5-25')
expect(spy).toHaveBeenCalledWith('#L5', jasmine.anything())
it 'discards click events', ->
spy = spyOnEvent('a[data-line-number]', 'click')
clickLine(13)
expect(spy).toHaveBeenPrevented()
it 'handles garbage input from the hash', ->
func = -> new LineHighlighter('#tree-content-holder')
expect(func).not.toThrow()
describe '#clickHandler', ->
it 'discards the mousedown event', ->
spy = spyOnEvent('a[data-line-number]', 'mousedown')
clickLine(13)
expect(spy).toHaveBeenPrevented()
describe 'without shiftKey', ->
it 'highlights one line when clicked', ->
clickLine(13)
expect($('#LC13')).toHaveClass(@css)
it 'unhighlights previously highlighted lines', ->
clickLine(13)
clickLine(20)
expect($('#LC13')).not.toHaveClass(@css)
expect($('#LC20')).toHaveClass(@css)
it 'sets the hash', ->
spy = spyOn(@class, 'setHash').and.callThrough()
clickLine(13)
expect(spy).toHaveBeenCalledWith(13)
describe 'with shiftKey', ->
it 'sets the hash', ->
spy = spyOn(@class, 'setHash').and.callThrough()
clickLine(13)
clickLine(20, shiftKey: true)
expect(spy).toHaveBeenCalledWith(13)
expect(spy).toHaveBeenCalledWith(13, 20)
describe 'without existing highlight', ->
it 'highlights the clicked line', ->
clickLine(13, shiftKey: true)
expect($('#LC13')).toHaveClass(@css)
expect($(".#{@css}").length).toBe(1)
it 'sets the hash', ->
spy = spyOn(@class, 'setHash')
clickLine(13, shiftKey: true)
expect(spy).toHaveBeenCalledWith(13)
describe 'with existing single-line highlight', ->
it 'uses existing line as last line when target is lesser', ->
clickLine(20)
clickLine(15, shiftKey: true)
expect($(".#{@css}").length).toBe(6)
expect($("#LC#{line}")).toHaveClass(@css) for line in [15..20]
it 'uses existing line as first line when target is greater', ->
clickLine(5)
clickLine(10, shiftKey: true)
expect($(".#{@css}").length).toBe(6)
expect($("#LC#{line}")).toHaveClass(@css) for line in [5..10]
describe 'with existing multi-line highlight', ->
beforeEach ->
clickLine(10, shiftKey: true)
clickLine(13, shiftKey: true)
it 'uses target as first line when it is less than existing first line', ->
clickLine(5, shiftKey: true)
expect($(".#{@css}").length).toBe(6)
expect($("#LC#{line}")).toHaveClass(@css) for line in [5..10]
it 'uses target as last line when it is greater than existing first line', ->
clickLine(15, shiftKey: true)
expect($(".#{@css}").length).toBe(6)
expect($("#LC#{line}")).toHaveClass(@css) for line in [10..15]
describe '#hashToRange', ->
beforeEach ->
@subject = @class.hashToRange
it 'extracts a single line number from the hash', ->
expect(@subject('#L5')).toEqual([5, null])
it 'extracts a range of line numbers from the hash', ->
expect(@subject('#L5-15')).toEqual([5, 15])
it 'returns [null, null] when the hash is not a line number', ->
expect(@subject('#foo')).toEqual([null, null])
describe '#highlightLine', ->
beforeEach ->
@subject = @class.highlightLine
it 'highlights the specified line', ->
@subject(13)
expect($('#LC13')).toHaveClass(@css)
it 'accepts a String-based number', ->
@subject('13')
expect($('#LC13')).toHaveClass(@css)
describe '#setHash', ->
beforeEach ->
@subject = @class.setHash
it 'sets the location hash for a single line', ->
@subject(5)
expect(@spies.__setLocationHash__).toHaveBeenCalledWith('#L5')
it 'sets the location hash for a range', ->
@subject(5, 15)
expect(@spies.__setLocationHash__).toHaveBeenCalledWith('#L5-15')
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