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Merge branch 'master' into release/0.10
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commit
a3305a9273
3 changed files with 63 additions and 1 deletions
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@ -274,7 +274,8 @@ This has been changed so that it compiles and raises an error at runtime with a
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First version ready for public use.
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[Unreleased]: https://gitlab.com/arctic-fox/spectator/-/compare/v0.9.36...HEAD
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[Unreleased]: https://gitlab.com/arctic-fox/spectator/-/compare/v0.9.37...release%2F0.10
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[0.9.36]: https://gitlab.com/arctic-fox/spectator/-/compare/v0.9.36...v0.9.37
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[0.9.35]: https://gitlab.com/arctic-fox/spectator/-/compare/v0.9.35...v0.9.36
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[0.9.35]: https://gitlab.com/arctic-fox/spectator/-/compare/v0.9.34...v0.9.35
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[0.9.34]: https://gitlab.com/arctic-fox/spectator/-/compare/v0.9.33...v0.9.34
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41
src/spectator/matchers/pattern_matcher.cr
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41
src/spectator/matchers/pattern_matcher.cr
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@ -0,0 +1,41 @@
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require "./value_matcher"
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module Spectator::Matchers
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# Common matcher that tests whether a value matches another.
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# The values are compared with the === operator.
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# This is the same as `CaseMatcher`, but the operands are flipped.
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struct PatternMatcher(ExpectedType) < ValueMatcher(ExpectedType)
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# Short text about the matcher's purpose.
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# This explains what condition satisfies the matcher.
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# The description is used when the one-liner syntax is used.
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def description : String
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"matches #{expected.label}"
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end
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# Checks whether the matcher is satisifed with the expression given to it.
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private def match?(actual : TestExpression(T)) : Bool forall T
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actual.value === expected.value
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end
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# Message displayed when the matcher isn't satisifed.
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#
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# This is only called when `#match?` returns false.
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#
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# The message should typically only contain the test expression labels.
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# Actual values should be returned by `#values`.
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private def failure_message(actual) : String
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"#{actual.label} does not match #{expected.label}"
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end
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# Message displayed when the matcher isn't satisifed and is negated.
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# This is essentially what would satisfy the matcher if it wasn't negated.
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#
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# This is only called when `#does_not_match?` returns false.
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#
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# The message should typically only contain the test expression labels.
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# Actual values should be returned by `#values`.
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private def failure_message_when_negated(actual) : String
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"#{actual.label} matched #{expected.label}"
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end
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end
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end
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@ -82,6 +82,26 @@ module Spectator::Matchers
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InequalityMatcher.new(expected)
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end
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# Creates a matcher that checks if a value is semantically equal to an expected value.
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# The spec would look like:
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# ```
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# expect("foobar").to be === /foo/
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# ```
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def ===(value)
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expected = TestValue.new(value)
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PatternMatcher.new(expected)
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end
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# Creates a matcher that checks if a value matches the pattern of an expected value.
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# The spec would look like:
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# ```
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# expect("foobar").to be =~ /foo/
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# ```
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def =~(value)
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expected = TestValue.new(value)
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PatternMatcher.new(expected)
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end
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# Checks whether the matcher is satisifed with the expression given to it.
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private def match?(actual : Expression(T)) : Bool forall T
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@truthy == !!actual.value
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