Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 640 insertions, 0 deletions

diff --git a/spec/ruby/core/proc/arity_spec.rb b/spec/ruby/core/proc/arity_spec.rb
new file mode 100644
index 0000000000..251710a663
--- /dev/null
+++ b/spec/ruby/core/proc/arity_spec.rb
@@ -0,0 +1,640 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Proc#arity" do
+  SpecEvaluate.desc = "for definition"
+
+  context "for instances created with -> () { }" do
+    context "returns zero" do
+      evaluate <<-ruby do
+          @a = -> () {}
+        ruby
+
+        @a.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = -> (&b) {}
+        ruby
+
+        @a.arity.should == 0
+      end
+    end
+
+    context "returns positive values" do
+      evaluate <<-ruby do
+          @a = -> (a) { }
+          @b = -> (a, b) { }
+          @c = -> (a, b, c) { }
+          @d = -> (a, b, c, d) { }
+        ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 2
+        @c.arity.should == 3
+        @d.arity.should == 4
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a:) { }
+          @b = -> (a:, b:) { }
+          @c = -> (a: 1, b:, c:, d: 2) { }
+        ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 1
+        @c.arity.should == 1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, b:) { }
+          @b = -> (a, b:, &l) { }
+        ruby
+
+        @a.arity.should == 2
+        @b.arity.should == 2
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, b, c:, d: 1) { }
+          @b = -> (a, b, c:, d: 1, **k, &l) { }
+        ruby
+
+        @a.arity.should == 3
+        @b.arity.should == 3
+      end
+
+      evaluate <<-ruby do
+          @a = -> ((a, (*b, c))) { }
+          @b = -> (a, (*b, c), d, (*e), (*)) { }
+        ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 5
+      end
+    end
+
+    context "returns negative values" do
+      evaluate <<-ruby do
+          @a = -> (a=1) { }
+          @b = -> (a=1, b=2) { }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, b=1) { }
+          @b = -> (a, b, c=1, d=2) { }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -3
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a=1, *b) { }
+          @b = -> (a=1, b=2, *c) { }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (*) { }
+          @b = -> (*a) { }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, *) { }
+          @b = -> (a, *b) { }
+          @c = -> (a, b, *c) { }
+          @d = -> (a, b, c, *d) { }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -2
+        @c.arity.should == -3
+        @d.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = -> (*a, b) { }
+          @b = -> (*a, b, c) { }
+          @c = -> (*a, b, c, d) { }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -3
+        @c.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, *b, c) { }
+          @b = -> (a, b, *c, d, e) { }
+        ruby
+
+        @a.arity.should == -3
+        @b.arity.should == -5
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, b=1, c=2, *d, e, f) { }
+          @b = -> (a, b, c=1, *d, e, f, g) { }
+        ruby
+
+        @a.arity.should == -4
+        @b.arity.should == -6
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a: 1) { }
+          @b = -> (a: 1, b: 2) { }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a=1, b: 2) { }
+          @b = -> (*a, b: 1) { }
+          @c = -> (a=1, b: 2) { }
+          @d = -> (a=1, *b, c: 2, &l) { }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+        @c.arity.should == -1
+        @d.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (**k, &l) { }
+          @b= -> (*a, **k) { }
+          @c = ->(a: 1, b: 2, **k) { }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+        @c.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a=1, *b, c:, d: 2, **k, &l) { }
+        ruby
+
+        @a.arity.should == -2
+      end
+
+      evaluate <<-ruby do
+          @a = -> (a, b=1, *c, d, e:, f: 2, **k, &l) { }
+          @b = -> (a, b=1, *c, d:, e:, f: 2, **k, &l) { }
+          @c = -> (a=0, b=1, *c, d, e:, f: 2, **k, &l) { }
+          @d = -> (a=0, b=1, *c, d:, e:, f: 2, **k, &l) { }
+        ruby
+
+        @a.arity.should == -4
+        @b.arity.should == -3
+        @c.arity.should == -3
+        @d.arity.should == -2
+      end
+    end
+  end
+
+  context "for instances created with lambda { || }" do
+    context "returns zero" do
+      evaluate <<-ruby do
+          @a = lambda { }
+          @b = lambda { || }
+        ruby
+
+        @a.arity.should == 0
+        @b.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |&b| }
+        ruby
+
+        @a.arity.should == 0
+      end
+    end
+
+    context "returns positive values" do
+      evaluate <<-ruby do
+          @a = lambda { |a| }
+          @b = lambda { |a, b| }
+          @c = lambda { |a, b, c| }
+          @d = lambda { |a, b, c, d| }
+        ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 2
+        @c.arity.should == 3
+        @d.arity.should == 4
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a:| }
+          @b = lambda { |a:, b:| }
+          @c = lambda { |a: 1, b:, c:, d: 2| }
+        ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 1
+        @c.arity.should == 1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, b:| }
+          @b = lambda { |a, b:, &l| }
+        ruby
+
+        @a.arity.should == 2
+        @b.arity.should == 2
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, b, c:, d: 1| }
+          @b = lambda { |a, b, c:, d: 1, **k, &l| }
+        ruby
+
+        @a.arity.should == 3
+        @b.arity.should == 3
+      end
+    end
+
+    context "returns negative values" do
+      evaluate <<-ruby do
+          @a = lambda { |a=1| }
+          @b = lambda { |a=1, b=2| }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, b=1| }
+          @b = lambda { |a, b, c=1, d=2| }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -3
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a=1, *b| }
+          @b = lambda { |a=1, b=2, *c| }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |*| }
+          @b = lambda { |*a| }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, *| }
+          @b = lambda { |a, *b| }
+          @c = lambda { |a, b, *c| }
+          @d = lambda { |a, b, c, *d| }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -2
+        @c.arity.should == -3
+        @d.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |*a, b| }
+          @b = lambda { |*a, b, c| }
+          @c = lambda { |*a, b, c, d| }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -3
+        @c.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, *b, c| }
+          @b = lambda { |a, b, *c, d, e| }
+        ruby
+
+        @a.arity.should == -3
+        @b.arity.should == -5
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, b=1, c=2, *d, e, f| }
+          @b = lambda { |a, b, c=1, *d, e, f, g| }
+        ruby
+
+        @a.arity.should == -4
+        @b.arity.should == -6
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a: 1| }
+          @b = lambda { |a: 1, b: 2| }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a=1, b: 2| }
+          @b = lambda { |*a, b: 1| }
+          @c = lambda { |a=1, b: 2| }
+          @d = lambda { |a=1, *b, c: 2, &l| }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+        @c.arity.should == -1
+        @d.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |**k, &l| }
+          @b = lambda { |*a, **k| }
+          @c = lambda { |a: 1, b: 2, **k| }
+        ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+        @c.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a=1, *b, c:, d: 2, **k, &l| }
+        ruby
+
+        @a.arity.should == -2
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |(a, (*b, c)), d=1| }
+          @b = lambda { |a, (*b, c), d, (*e), (*), **k| }
+          @c = lambda { |a, (b, c), *, d:, e: 2, **| }
+        ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -6
+        @c.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a, b=1, *c, d, e:, f: 2, **k, &l| }
+          @b = lambda { |a, b=1, *c, d:, e:, f: 2, **k, &l| }
+          @c = lambda { |a=0, b=1, *c, d, e:, f: 2, **k, &l| }
+          @d = lambda { |a=0, b=1, *c, d:, e:, f: 2, **k, &l| }
+        ruby
+
+        @a.arity.should == -4
+        @b.arity.should == -3
+        @c.arity.should == -3
+        @d.arity.should == -2
+      end
+    end
+  end
+
+  context "for instances created with proc { || }" do
+    context "returns zero" do
+      evaluate <<-ruby do
+          @a = proc { }
+          @b = proc { || }
+      ruby
+
+        @a.arity.should == 0
+        @b.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |&b| }
+      ruby
+
+        @a.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a=1| }
+          @b = proc { |a=1, b=2| }
+      ruby
+
+        @a.arity.should == 0
+        @b.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a: 1| }
+          @b = proc { |a: 1, b: 2| }
+      ruby
+
+        @a.arity.should == 0
+        @b.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |**k, &l| }
+          @b = proc { |a: 1, b: 2, **k| }
+      ruby
+
+        @a.arity.should == 0
+        @b.arity.should == 0
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a=1, b: 2| }
+          @b = proc { |a=1, b: 2| }
+      ruby
+
+        @a.arity.should == 0
+        @b.arity.should == 0
+      end
+    end
+
+    context "returns positive values" do
+      evaluate <<-ruby do
+          @a = proc { |a| }
+          @b = proc { |a, b| }
+          @c = proc { |a, b, c| }
+          @d = proc { |a, b, c, d| }
+      ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 2
+        @c.arity.should == 3
+        @d.arity.should == 4
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, b=1| }
+          @b = proc { |a, b, c=1, d=2| }
+      ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 2
+      end
+
+      evaluate <<-ruby do
+          @a = lambda { |a:| }
+          @b = lambda { |a:, b:| }
+          @c = lambda { |a: 1, b:, c:, d: 2| }
+      ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 1
+        @c.arity.should == 1
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, b:| }
+          @b = proc { |a, b:, &l| }
+      ruby
+
+        @a.arity.should == 2
+        @b.arity.should == 2
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, b, c:, d: 1| }
+          @b = proc { |a, b, c:, d: 1, **k, &l| }
+      ruby
+
+        @a.arity.should == 3
+        @b.arity.should == 3
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |(a, (*b, c)), d=1| }
+          @b = proc { |a, (*b, c), d, (*e), (*), **k| }
+      ruby
+
+        @a.arity.should == 1
+        @b.arity.should == 5
+      end
+    end
+
+    context "returns negative values" do
+      evaluate <<-ruby do
+          @a = proc { |a=1, *b| }
+          @b = proc { |a=1, b=2, *c| }
+      ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |*| }
+          @b = proc { |*a| }
+      ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, *| }
+          @b = proc { |a, *b| }
+          @c = proc { |a, b, *c| }
+          @d = proc { |a, b, c, *d| }
+      ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -2
+        @c.arity.should == -3
+        @d.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |*a, b| }
+          @b = proc { |*a, b, c| }
+          @c = proc { |*a, b, c, d| }
+      ruby
+
+        @a.arity.should == -2
+        @b.arity.should == -3
+        @c.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, *b, c| }
+          @b = proc { |a, b, *c, d, e| }
+      ruby
+
+        @a.arity.should == -3
+        @b.arity.should == -5
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, b=1, c=2, *d, e, f| }
+          @b = proc { |a, b, c=1, *d, e, f, g| }
+      ruby
+
+        @a.arity.should == -4
+        @b.arity.should == -6
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |*a, b: 1| }
+          @b = proc { |a=1, *b, c: 2, &l| }
+      ruby
+
+        @a.arity.should == -1
+        @b.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |*a, **k| }
+      ruby
+
+        @a.arity.should == -1
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a=1, *b, c:, d: 2, **k, &l| }
+      ruby
+
+        @a.arity.should == -2
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, (b, c), *, d:, e: 2, **| }
+      ruby
+
+        @a.arity.should == -4
+      end
+
+      evaluate <<-ruby do
+          @a = proc { |a, b=1, *c, d, e:, f: 2, **k, &l| }
+          @b = proc { |a, b=1, *c, d:, e:, f: 2, **k, &l| }
+          @c = proc { |a=0, b=1, *c, d, e:, f: 2, **k, &l| }
+          @d = proc { |a=0, b=1, *c, d:, e:, f: 2, **k, &l| }
+      ruby
+
+        @a.arity.should == -4
+        @b.arity.should == -3
+        @c.arity.should == -3
+        @d.arity.should == -2
+      end
+    end
+  end
+end