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Add greater-than matcher
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2 changed files with 27 additions and 2 deletions
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@ -28,8 +28,8 @@ module Spectator::Matchers
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# ```
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# ```
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# expect(2).to be > 1
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# expect(2).to be > 1
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# ```
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# ```
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def >(other : ExpectedType) forall ExpectedType
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def >(expected : ExpectedType) forall ExpectedType
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raise NotImplementedError.new("be >")
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GreaterThanMatcher.new(expected)
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end
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end
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# Creates a matcher that checks if a value is greater than or equal to an expected value.
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# Creates a matcher that checks if a value is greater than or equal to an expected value.
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25
src/spectator/matchers/greater_than_matcher.cr
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25
src/spectator/matchers/greater_than_matcher.cr
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@ -0,0 +1,25 @@
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require "./value_matcher"
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module Spectator::Matchers
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# Matcher that tests whether one value is greater than another.
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# The values are compared with the `>` operator.
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struct GreaterThanMatcher(ExpectedType) < ValueMatcher(ExpectedType)
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# Determines whether the matcher is satisfied with the value given to it.
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# True is returned if the match was successful, false otherwise.
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def match?(partial : Expectations::ValueExpectationPartial(ActualType)) : Bool forall ActualType
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partial.actual > expected
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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(partial : Expectations::ValueExpectationPartial(ActualType)) : String forall ActualType
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"Expected #{partial.label} to be greater than #{label} (using >)"
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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(partial : Expectations::ValueExpectationPartial(ActualType)) : String forall ActualType
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"Expected #{partial.label} to not be greater than #{label} (using >)"
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end
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end
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end
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