168 lines
6.4 KiB
Crystal
168 lines
6.4 KiB
Crystal
require "../location"
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require "./builder"
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module Spectator::DSL
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# DSL methods for adding custom logic to key times of the spec execution.
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module Hooks
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# Defines a macro to create an example group hook.
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# The *type* indicates when the hook runs and must be a method on `Spectator::DSL::Builder`.
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# A custom *name* can be used for the hook method.
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# If not provided, *type* will be used instead.
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# Additionally, a block can be provided.
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# The block can perform any operations necessary and yield to invoke the end-user hook.
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macro define_example_group_hook(type, name = nil, &block)
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macro {{(name ||= type).id}}(&block)
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\{% raise "Missing block for '{{name.id}}' hook" unless block %}
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\{% raise "Cannot use '{{name.id}}' inside of a test block" if @def %}
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private def self.\%hook : Nil
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\{{block.body}}
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end
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{% if block %}
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private def self.%wrapper : Nil
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{{block.body}}
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end
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{% end %}
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::Spectator::DSL::Builder.{{type.id}}(
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::Spectator::Location.new(\{{block.filename}}, \{{block.line_number}}, \{{block.end_line_number}})
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) do
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{% if block %}
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%wrapper do |*args|
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\{% if block.args.empty? %}
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\%hook
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\{% else %}
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\%hook(*args)
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\{% end %}
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end
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{% else %}
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\%hook
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{% end %}
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end
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end
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end
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# Defines a macro to create an example hook.
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# The *type* indicates when the hook runs and must be a method on `Spectator::DSL::Builder`.
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# A custom *name* can be used for the hook method.
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# If not provided, *type* will be used instead.
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# Additionally, a block can be provided that takes the current example as an argument.
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# The block can perform any operations necessary and yield to invoke the end-user hook.
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macro define_example_hook(type, name = nil, &block)
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macro {{(name ||= type).id}}(&block)
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\{% raise "Missing block for '{{name.id}}' hook" unless block %}
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\{% raise "Block argument count '{{name.id}}' hook must be 0..1" if block.args.size > 1 %}
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\{% raise "Cannot use '{{name.id}}' inside of a test block" if @def %}
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private def \%hook(\{{block.args.splat}}) : Nil
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\{{block.body}}
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end
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{% if block %}
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private def %wrapper({{block.args.splat}}) : Nil
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{{block.body}}
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end
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{% end %}
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::Spectator::DSL::Builder.{{type.id}}(
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::Spectator::Location.new(\{{block.filename}}, \{{block.line_number}})
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) do |example|
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example.with_context(\{{@type.name}}) do
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{% if block %}
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{% if block.args.empty? %}
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%wrapper do |*args|
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\{% if block.args.empty? %}
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\%hook
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\{% else %}
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\%hook(*args)
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\{% end %}
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end
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{% else %}
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%wrapper(example) do |*args|
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\{% if block.args.empty? %}
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\%hook
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\{% else %}
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\%hook(*args)
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\{% end %}
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end
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{% end %}
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{% else %}
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\{% if block.args.empty? %}
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\%hook
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\{% else %}
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\%hook(example)
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\{% end %}
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{% end %}
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end
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end
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end
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end
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# Defines a block of code that will be invoked once before any examples in the suite.
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# The block will not run in the context of the current running example.
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# This means that values defined by `let` and `subject` are not available.
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define_example_group_hook :before_suite
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# Defines a block of code that will be invoked once after all examples in the suite.
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# The block will not run in the context of the current running example.
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# This means that values defined by `let` and `subject` are not available.
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define_example_group_hook :after_suite
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# Defines a block of code that will be invoked once before any examples in the group.
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# The block will not run in the context of the current running example.
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# This means that values defined by `let` and `subject` are not available.
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define_example_group_hook :before_all
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# Defines a block of code that will be invoked once after all examples in the group.
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# The block will not run in the context of the current running example.
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# This means that values defined by `let` and `subject` are not available.
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define_example_group_hook :after_all
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# Defines a block of code that will be invoked before every example in the group.
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# The block will be run in the context of the current running example.
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# This means that values defined by `let` and `subject` are available.
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define_example_hook :before_each
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# :ditto:
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macro before(&block)
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before_each {{block}}
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end
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# Defines a block of code that will be invoked after every example in the group.
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# The block will be run in the context of the current running example.
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# This means that values defined by `let` and `subject` are available.
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define_example_hook :after_each
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# :ditto:
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macro after(&block)
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after_each {{block}}
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end
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# Defines a block of code that will be invoked around every example in the group.
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# The block will be run in the context of the current running example.
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# This means that values defined by `let` and `subject` are available.
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#
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# The block will execute before the example.
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# An `Example::Procsy` is passed to the block.
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# The `Example::Procsy#run` method should be called to ensure the example runs.
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# More code can run afterwards (in the block).
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define_example_hook :around_each
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# :ditto:
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macro around(&block)
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around_each {{block}}
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end
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# Defines a block of code that will be invoked before every example in the group.
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# The block will be run in the context of the current running example.
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# This means that values defined by `let` and `subject` are available.
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define_example_hook :pre_condition
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# Defines a block of code that will be invoked after every example in the group.
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# The block will be run in the context of the current running example.
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# This means that values defined by `let` and `subject` are available.
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define_example_hook :post_condition
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end
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end
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