main_command_spec: fix structure and indentation

spec/stackup/main_command_spec.rb

@@ -1,17 +1,18 @@
 require "stackup/main_command"
 
 describe Stackup::MainCommand do
-  context "change-set create --service-role-arn"
-    let(:mock_change_set) { double() }
-
-    before(:example) do
-      mock_stackup = double()
-      mock_stack = double()
-      allow_any_instance_of(Stackup::MainCommand).to receive(:Stackup).and_return(mock_stackup)
-      allow(mock_stackup).to receive(:stack).and_return(mock_stack)
-      allow(mock_stack).to receive(:change_set).and_return(mock_change_set)
-    end
 
+  let(:mock_change_set) { double() }
+
+  before(:example) do
+    mock_stackup = double()
+    mock_stack = double()
+    allow_any_instance_of(Stackup::MainCommand).to receive(:Stackup).and_return(mock_stackup)
+    allow(mock_stackup).to receive(:stack).and_return(mock_stack)
+    allow(mock_stack).to receive(:change_set).and_return(mock_change_set)
+  end
+
+  context "change-set create --service-role-arn" do
     it "invokes stack.change_set.create with role arn passed through" do
       expected_args = {
         role_arn: "arn:aws:iam::000000000000:role/example"
@@ -23,32 +24,33 @@
         "--template", "examples/template.yml",
         "--service-role-arn", "arn:aws:iam::000000000000:role/example"])
     end
+  end
 
-    context "change-set create" do
-      it "invokes stack.change_set.create with allow_empty_change_set nil" do
-        expected_args = {
-          allow_empty_change_set: nil
-        }
-        expect(mock_change_set).to receive(:create).with(hash_including(expected_args))
-
-        Stackup::MainCommand.run("stackup", [
-          "STACK-NAME", "change-set", "create",
-          "--template", "examples/template.yml"])
-      end
-    end
+  context "change-set create" do
+    it "invokes stack.change_set.create with allow_empty_change_set nil" do
+      expected_args = {
+        allow_empty_change_set: nil
+      }
+      expect(mock_change_set).to receive(:create).with(hash_including(expected_args))
 
-    context "change-set create --no-fail-on-empty-change-set" do
-      it "invokes stack.change_set.create with allow_empty_change_set true" do
-        expected_args = {
-          allow_empty_change_set: true
-        }
-        expect(mock_change_set).to receive(:create).with(hash_including(expected_args))
-
-        Stackup::MainCommand.run("stackup", [
-          "STACK-NAME", "change-set", "create",
-          "--template", "examples/template.yml",
-          "--no-fail-on-empty-change-set"])
-      end
+      Stackup::MainCommand.run("stackup", [
+        "STACK-NAME", "change-set", "create",
+        "--template", "examples/template.yml"])
     end
+  end
+
+  context "change-set create --no-fail-on-empty-change-set" do
+    it "invokes stack.change_set.create with allow_empty_change_set true" do
+      expected_args = {
+        allow_empty_change_set: true
+      }
+      expect(mock_change_set).to receive(:create).with(hash_including(expected_args))
 
+      Stackup::MainCommand.run("stackup", [
+        "STACK-NAME", "change-set", "create",
+        "--template", "examples/template.yml",
+        "--no-fail-on-empty-change-set"])
+    end
   end
+
+end