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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/mspec/lib/mspec/matchers/be_computed_by.rb | |
parent | 52df1d0d3370919711c0577aaa42d1a864709885 (diff) | |
download | ruby-a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5.tar.gz |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/mspec/lib/mspec/matchers/be_computed_by.rb')
-rw-r--r-- | spec/mspec/lib/mspec/matchers/be_computed_by.rb | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/spec/mspec/lib/mspec/matchers/be_computed_by.rb b/spec/mspec/lib/mspec/matchers/be_computed_by.rb new file mode 100644 index 0000000000..c927eb7697 --- /dev/null +++ b/spec/mspec/lib/mspec/matchers/be_computed_by.rb @@ -0,0 +1,37 @@ +class BeComputedByMatcher + def initialize(sym, *args) + @method = sym + @args = args + end + + def matches?(array) + array.each do |line| + @receiver = line.shift + @value = line.pop + @arguments = line + @arguments += @args + @actual = @receiver.send(@method, *@arguments) + return false unless @actual == @value + end + + return true + end + + def method_call + method_call = "#{@receiver.inspect}.#{@method}" + unless @arguments.empty? + method_call = "#{method_call} from #{@arguments.map { |x| x.inspect }.join(", ")}" + end + method_call + end + + def failure_message + ["Expected #{@value.inspect}", "to be computed by #{method_call} (computed #{@actual.inspect} instead)"] + end +end + +class Object + def be_computed_by(sym, *args) + BeComputedByMatcher.new(sym, *args) + end +end |