Update to ruby/spec@35a9fba

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66888 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/proc/shared/compose.rb

@@ -0,0 +1,47 @@
+describe :proc_compose, shared: true do
+  ruby_version_is "2.6"..."2.7" do
+    it "raises NoMethodError when called if passed not callable object" do
+      not_callable = Object.new
+      composed = @object.call.send(@method, not_callable)
+
+      -> {
+        composed.call('a')
+      }.should raise_error(NoMethodError, /undefined method `call' for/)
+
+    end
+
+    it "when called does not try to coerce argument with #to_proc" do
+      succ = Object.new
+      def succ.to_proc(s); s.succ; end
+
+      composed = @object.call.send(@method, succ)
+
+      -> {
+        composed.call('a')
+      }.should raise_error(NoMethodError, /undefined method `call' for/)
+    end
+  end
+
+  ruby_version_is "2.7" do # https://bugs.ruby-lang.org/issues/15428
+    it "raises TypeError if passed not callable object" do
+      lhs = @object.call
+      not_callable = Object.new
+
+      -> {
+        lhs.send(@method, not_callable)
+      }.should raise_error(TypeError, "callable object is expected")
+
+    end
+
+    it "does not try to coerce argument with #to_proc" do
+      lhs = @object.call
+
+      succ = Object.new
+      def succ.to_proc(s); s.succ; end
+
+      -> {
+        lhs.send(@method, succ)
+      }.should raise_error(TypeError, "callable object is expected")
+    end
+  end
+end