Change deps_spec expect ordering

Library/Homebrew/test/deps_spec.rb

@@ -10,22 +10,22 @@ describe "brew deps", :integration_test do
 
   it "outputs no dependencies for a Formula that has no dependencies" do
     expect { brew "deps", "foo" }
-      .to output("").to_stdout
+      .to be_a_success
+      .and not_to_output.to_stdout
       .and not_to_output.to_stderr
-      .and be_a_success
   end
 
   it "outputs a dependency for a Formula that has one dependency" do
     expect { brew "deps", "bar" }
-      .to output("foo\n").to_stdout
+      .to be_a_success
+      .and output("foo\n").to_stdout
       .and not_to_output.to_stderr
-      .and be_a_success
   end
 
   it "outputs all of a Formula's dependencies and their dependencies on separate lines" do
     expect { brew "deps", "baz" }
-      .to output("bar\nfoo\n").to_stdout
+      .to be_a_success
+      .and output("bar\nfoo\n").to_stdout
       .and not_to_output.to_stderr
-      .and be_a_success
   end
 end