diff options
Diffstat (limited to 'spec/ruby/core/unboundmethod/arity_spec.rb')
-rw-r--r-- | spec/ruby/core/unboundmethod/arity_spec.rb | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/spec/ruby/core/unboundmethod/arity_spec.rb b/spec/ruby/core/unboundmethod/arity_spec.rb new file mode 100644 index 0000000000..a804235b70 --- /dev/null +++ b/spec/ruby/core/unboundmethod/arity_spec.rb @@ -0,0 +1,207 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "UnboundMethod#arity" do + SpecEvaluate.desc = "for method definition" + + context "returns zero" do + evaluate <<-ruby do + def m() end + ruby + + method(:m).unbind.arity.should == 0 + end + + evaluate <<-ruby do + def n(&b) end + ruby + + method(:n).unbind.arity.should == 0 + end + end + + context "returns positive values" do + evaluate <<-ruby do + def m(a) end + def n(a, b) end + def o(a, b, c) end + def p(a, b, c, d) end + ruby + + method(:m).unbind.arity.should == 1 + method(:n).unbind.arity.should == 2 + method(:o).unbind.arity.should == 3 + method(:p).unbind.arity.should == 4 + end + + evaluate <<-ruby do + def m(a:) end + def n(a:, b:) end + def o(a: 1, b:, c:, d: 2) end + ruby + + method(:m).unbind.arity.should == 1 + method(:n).unbind.arity.should == 1 + method(:o).unbind.arity.should == 1 + end + + evaluate <<-ruby do + def m(a, b:) end + def n(a, b:, &l) end + ruby + + method(:m).unbind.arity.should == 2 + method(:n).unbind.arity.should == 2 + end + + evaluate <<-ruby do + def m(a, b, c:, d: 1) end + def n(a, b, c:, d: 1, **k, &l) end + ruby + + method(:m).unbind.arity.should == 3 + method(:n).unbind.arity.should == 3 + end + end + + context "returns negative values" do + evaluate <<-ruby do + def m(a=1) end + def n(a=1, b=2) end + ruby + + method(:m).unbind.arity.should == -1 + method(:n).unbind.arity.should == -1 + end + + evaluate <<-ruby do + def m(a, b=1) end + def n(a, b, c=1, d=2) end + ruby + + method(:m).unbind.arity.should == -2 + method(:n).unbind.arity.should == -3 + end + + evaluate <<-ruby do + def m(a=1, *b) end + def n(a=1, b=2, *c) end + ruby + + method(:m).unbind.arity.should == -1 + method(:n).unbind.arity.should == -1 + end + + evaluate <<-ruby do + def m(*) end + def n(*a) end + ruby + + method(:m).unbind.arity.should == -1 + method(:n).unbind.arity.should == -1 + end + + evaluate <<-ruby do + def m(a, *) end + def n(a, *b) end + def o(a, b, *c) end + def p(a, b, c, *d) end + ruby + + method(:m).unbind.arity.should == -2 + method(:n).unbind.arity.should == -2 + method(:o).unbind.arity.should == -3 + method(:p).unbind.arity.should == -4 + end + + evaluate <<-ruby do + def m(*a, b) end + def n(*a, b, c) end + def o(*a, b, c, d) end + ruby + + method(:m).unbind.arity.should == -2 + method(:n).unbind.arity.should == -3 + method(:o).unbind.arity.should == -4 + end + + evaluate <<-ruby do + def m(a, *b, c) end + def n(a, b, *c, d, e) end + ruby + + method(:m).unbind.arity.should == -3 + method(:n).unbind.arity.should == -5 + end + + evaluate <<-ruby do + def m(a, b=1, c=2, *d, e, f) end + def n(a, b, c=1, *d, e, f, g) end + ruby + + method(:m).unbind.arity.should == -4 + method(:n).unbind.arity.should == -6 + end + + evaluate <<-ruby do + def m(a: 1) end + def n(a: 1, b: 2) end + ruby + + method(:m).unbind.arity.should == -1 + method(:n).unbind.arity.should == -1 + end + + evaluate <<-ruby do + def m(a=1, b: 2) end + def n(*a, b: 1) end + def o(a=1, b: 2) end + def p(a=1, *b, c: 2, &l) end + ruby + + method(:m).unbind.arity.should == -1 + method(:n).unbind.arity.should == -1 + method(:o).unbind.arity.should == -1 + method(:p).unbind.arity.should == -1 + end + + evaluate <<-ruby do + def m(**k, &l) end + def n(*a, **k) end + def o(a: 1, b: 2, **k) end + ruby + + method(:m).unbind.arity.should == -1 + method(:n).unbind.arity.should == -1 + method(:o).unbind.arity.should == -1 + end + + evaluate <<-ruby do + def m(a=1, *b, c:, d: 2, **k, &l) end + ruby + + method(:m).unbind.arity.should == -2 + end + + evaluate <<-ruby do + def m(a, b=1, *c, d, e:, f: 2, **k, &l) end + def n(a, b=1, *c, d:, e:, f: 2, **k, &l) end + def o(a=0, b=1, *c, d, e:, f: 2, **k, &l) end + def p(a=0, b=1, *c, d:, e:, f: 2, **k, &l) end + ruby + + method(:m).unbind.arity.should == -4 + method(:n).unbind.arity.should == -3 + method(:o).unbind.arity.should == -3 + method(:p).unbind.arity.should == -2 + end + end + + context "for a Method generated by respond_to_missing?" do + it "returns -1" do + obj = mock("method arity respond_to_missing") + obj.should_receive(:respond_to_missing?).and_return(true) + + obj.method(:m).unbind.arity.should == -1 + end + end +end |