Module: Capybara::Compose::Assertions
- Included in:
- TestHelper
- Defined in:
- lib/capybara/compose/assertions.rb
Overview
Internal: Wraps RSpec matchers to allow using them after calling ‘should` or `should_not` to perform the assertion.
Instance Method Summary collapse
-
#have(*args, **kwargs, &filter) ⇒ Object
Public: Allows to call have_selector with a shorter syntax.
-
#have_value(expected_value, **options) ⇒ Object
Public: Allows to check on any input value asynchronously.
-
#invert_expectation ⇒ Object
Public: Allows to write complex nested assertions.
-
#not_to ⇒ Object
(also: #or_should_not)
Public: Makes it more readable when in used in combination with to_or.
-
#should(negated = false) ⇒ Object
Public: Returns a test helper with a positive assertion state.
-
#should_not ⇒ Object
Public: Returns a test helper with a negative assertion state.
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(method, *args, **kwargs, &block) ⇒ Object (private)
Internal: Override the method_missing defined in RSpec::Matchers to avoid accidentally calling a predicate or has matcher instead of an assertion.
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# File 'lib/capybara/compose/assertions.rb', line 126 def method_missing(method, *args, **kwargs, &block) case method.to_s when DYNAMIC_MATCHER_REGEX raise NoMethodError, "undefined method `#{ method }' for #{ inspect }.\nUse `delegate_to_test_context(:#{ method })` in the test helper class if you plan to use it often, or `test_context.#{ method }` as needed in the instance." else super end end |
Instance Method Details
#have(*args, **kwargs, &filter) ⇒ Object
Public: Allows to call have_selector with a shorter syntax.
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# File 'lib/capybara/compose/assertions.rb', line 102 def have(*args, **kwargs, &filter) if args.first.is_a?(Integer) ::RSpec::CollectionMatchers::Have.new(*args, **kwargs) else have_selector(*args, **kwargs, &filter) end end |
#have_value(expected_value, **options) ⇒ Object
Public: Allows to check on any input value asynchronously.
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# File 'lib/capybara/compose/assertions.rb', line 113 def have_value(expected_value, **) synchronize_expectation(**) { expect(value).to_or not_to, eq(expected_value) } self end |
#invert_expectation ⇒ Object
Public: Allows to write complex nested assertions.
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# File 'lib/capybara/compose/assertions.rb', line 39 def invert_expectation should(!not_to) end |
#not_to ⇒ Object Also known as: or_should_not
Public: Makes it more readable when in used in combination with to_or.
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# File 'lib/capybara/compose/assertions.rb', line 31 def not_to raise(ArgumentError, 'You must call `should` or `should_not` before calling this method') if @negated.nil? @negated end |
#should(negated = false) ⇒ Object
Public: Returns a test helper with a positive assertion state. Any assertions called after it will execute as ‘expect(…).to …`.
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# File 'lib/capybara/compose/assertions.rb', line 15 def should(negated = false) negated = !!negated # Coerce to boolean. return self if negated == @negated clone.tap { |test_helper| test_helper.instance_variable_set('@negated', negated) } end |
#should_not ⇒ Object
Public: Returns a test helper with a negative assertion state. Any assertions called after it will execute as ‘expect(…).not_to …`.
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# File 'lib/capybara/compose/assertions.rb', line 25 def should_not @negated ? self : should(true) end |