Fix RSpec warnings

Author: sferik

spec/actions_spec.rb

@@ -121,7 +121,7 @@ def file
 
       it "finds a template inside the source path" do
         expect(runner.find_in_source_paths("doc")).to eq(File.expand_path("doc", source_root))
-        expect { runner.find_in_source_paths("README") }.to raise_error
+        expect { runner.find_in_source_paths("README") }.to raise_error(Thor::Error, /Could not find "README" in any of your source paths./)
 
         new_path = File.join(source_root, "doc")
         runner.instance_variable_set(:@source_paths, nil)

spec/group_spec.rb

@@ -28,7 +28,7 @@
     end
 
     it "raises when an exception happens within the command call" do
-      expect { BrokenCounter.start(%w[1 2 --fail]) }.to raise_error
+      expect { BrokenCounter.start(%w[1 2 --fail]) }.to raise_error(NameError, /undefined local variable or method `this_method_does_not_exist'/)
     end
 
     it "raises an error when a Thor group command expects arguments" do