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# Rendering context used for unit testing.
class Epoch.TestContext
VOID_METHODS = [
'arc', 'arcTo', 'beginPath', 'bezierCurveTo', 'clearRect',
'clip', 'closePath', 'drawImage', 'fill', 'fillRect', 'fillText',
'moveTo', 'quadraticCurveTo', 'rect', 'restore', 'rotate', 'save',
'scale', 'scrollPathIntoView', 'setLineDash', 'setTransform',
'stroke', 'strokeRect', 'strokeText', 'transform', 'translate', 'lineTo'
]
# Creates a new test rendering context.
constructor: ->
@_log = []
@_makeFauxMethod(method) for method in VOID_METHODS
# Creates a fake method with the given name that logs the method called
# and arguments passed when executed.
# @param name Name of the fake method to create.
_makeFauxMethod: (name) ->
@[name] = -> @_log.push "#{name}(#{(arg.toString() for arg in arguments).join(',')})"
# Faux method that emulates the "getImageData" method
getImageData: ->
@_log.push "getImageData(#{(arg.toString() for arg in arguments).join(',')})"
return { width: 0, height: 0, resolution: 1.0, data: [] }
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