34 lines
1.1 KiB
Crystal
34 lines
1.1 KiB
Crystal
require "./context"
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require "./example_context_method"
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require "./null_context"
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module Spectator
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# Stores a test context and a method to call within it.
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# This is a variant of `ContextDelegate` that accepts the current running example.
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struct ExampleContextDelegate
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# Retrieves the underlying context.
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protected getter context : Context
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# Creates the delegate.
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# The *context* is the instance of the test context.
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# The *method* is proc that downcasts *context* and calls a method on it.
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def initialize(@context : Context, @method : ExampleContextMethod)
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end
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# Creates a delegate with a null context.
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# The context will be ignored and the block will be executed in its original scope.
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# The example instance will be provided as an argument to the block.
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def self.null(&block : Example -> _)
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context = NullContext.new
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method = ExampleContextMethod.new { |example| block.call(example) }
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new(context, method)
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end
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# Invokes a method in the test context.
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# The *example* is the current running example.
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def call(example : Example)
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@method.call(example, @context)
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end
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end
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end
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