Reorganize some specs

spec/features/subject_spec.cr

@@ -0,0 +1,23 @@
+require "../spec_helper"
+
+class Base; end
+
+module SomeModule; end
+
+Spectator.describe "Subject" do
+  subject { Base.new }
+
+  context "nested" do
+    it "inherits the parent explicit subject" do
+      expect(subject).to be_a(Base)
+    end
+  end
+
+  context "module" do
+    describe SomeModule do
+      it "sets the implicit subject to the module" do
+        expect(subject).to be(SomeModule)
+      end
+    end
+  end
+end