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Refactor EndWithMatcher
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1 changed files with 62 additions and 64 deletions
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@ -1,88 +1,86 @@
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require "./value_matcher"
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require "./failed_match_data"
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require "./matcher"
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require "./successful_match_data"
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module Spectator::Matchers
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module Spectator::Matchers
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# Matcher that tests whether a value, such as a `String` or `Array`, ends with a value.
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# Matcher that tests whether a value, such as a `String` or `Array`, ends with a value.
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# The `ends_with?` method is used if it's defined on the actual type.
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# The `ends_with?` method is used if it's defined on the actual type.
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# Otherwise, it is treated as an `Indexable` and the `last` value is compared against.
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# Otherwise, it is treated as an `Indexable` and the `last` value is compared against.
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struct EndWithMatcher(ExpectedType) < ValueMatcher(ExpectedType)
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struct EndWithMatcher(ExpectedType) < Matcher
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# Determines whether the matcher is satisfied with the value given to it.
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private getter expected
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private def match_ends_with?(actual)
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actual.ends_with?(expected)
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def initialize(@expected : TestValue(ExpectedType))
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end
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end
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# Determines whether the matcher is satisfied with the value given to it.
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def description
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private def match_last?(actual)
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"ends with #{expected.label}"
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expected === actual
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end
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end
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# Determines whether the matcher is satisfied with the partial given to it.
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def match(actual)
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def match(partial, negated = false)
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if actual.value.responds_to?(:ends_with?)
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values = ExpectedActual.new(partial, self)
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match_ends_with(actual)
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actual = values.actual
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if actual.responds_to?(:ends_with?)
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EndsWithMatchData.new(match_ends_with?(actual), values)
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else
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else
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last = actual.last
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match_last(actual)
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LastMatchData.new(match_last?(last), values, last)
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end
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end
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end
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end
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# Match data specific to this matcher.
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private def match_ends_with(actual)
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# This type is used when the actual value responds to `ends_with?`.
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if actual.value.ends_with?(expected.value)
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private struct EndsWithMatchData(ExpectedType, ActualType) < MatchData
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SuccessfulMatchData.new
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# Creates the match data.
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else
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def initialize(matched, @values : ExpectedActual(ExpectedType, ActualType))
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FailedMatchData.new("#{actual.label} does not end with #{expected.label} (using #ends_with?)",
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super(matched)
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expected: expected.value.inspect,
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end
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actual: actual.value.inspect
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)
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# Information about the match.
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def named_tuple
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{
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expected: NegatableMatchDataValue.new(@values.expected),
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actual: @values.actual,
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}
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end
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# Describes the condition that satisfies the matcher.
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# This is informational and displayed to the end-user.
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def message
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"#{@values.actual_label} ends with #{@values.expected_label} (using #ends_with?)"
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end
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# Describes the condition that won't satsify the matcher.
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# This is informational and displayed to the end-user.
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def negated_message
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"#{@values.actual_label} does not end with #{@values.expected_label} (using #ends_with?)"
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end
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end
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end
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end
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# Match data specific to this matcher.
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private def match_last(actual)
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# This type is used when the actual value does not respond to `ends_with?`.
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list = actual.value.to_a
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private struct LastMatchData(ExpectedType, ActualType, LastType) < MatchData
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last = list.last
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# Creates the match data.
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def initialize(matched, @values : ExpectedActual(ExpectedType, ActualType), @last : LastType)
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if expected.value === last
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super(matched)
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SuccessfulMatchData.new
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else
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FailedMatchData.new("#{actual.label} does not end with #{expected.label} (using expected === last)",
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expected: expected.value,
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actual: last,
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list: list
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)
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end
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end
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end
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# Information about the match.
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def negated_match(actual)
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def named_tuple
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if actual.value.responds_to?(:ends_with?)
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{
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negated_match_ends_with(actual)
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expected: @values.expected,
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else
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actual: @last,
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negated_match_last(actual)
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list: @values.actual,
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end
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}
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end
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end
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# Describes the condition that satisfies the matcher.
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private def negated_match_ends_with(actual)
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# This is informational and displayed to the end-user.
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if actual.value.ends_with?(expected.value)
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def message
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FailedMatchData.new("#{actual.label} ends with #{expected.label} (using #ends_with?)",
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"#{@values.actual_label} ends with #{@values.expected_label} (using expected === actual.last)"
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expected: expected.value.inspect,
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actual: actual.value.inspect
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)
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else
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SuccessfulMatchData.new
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end
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end
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end
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# Describes the condition that won't satsify the matcher.
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private def negated_match_last(actual)
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# This is informational and displayed to the end-user.
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list = actual.value.to_a
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def negated_message
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last = list.last
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"#{@values.actual_label} does not end with #{@values.expected_label} (using expected === actual.last)"
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if expected.value === last
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FailedMatchData.new("#{actual.label} ends with #{expected.label} (using expected === last)",
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expected: expected.value,
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actual: last,
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list: list
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)
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else
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SuccessfulMatchData.new
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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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