spec/simple/service/context_spec.rb in simple-service-0.1.1 vs spec/simple/service/context_spec.rb in simple-service-0.1.2

@@ -1,33 +1,65 @@
 require "spec_helper"
 
+describe Simple::Service do
+  describe ".with_context" do
+    it "merges the current context for the duration of the block" do
+      block_called = false
+
+      Simple::Service.with_context(a: "a") do
+        expect(Simple::Service.context.a).to eq("a")
+
+        # overwrite value
+        Simple::Service.with_context(a: "b") do
+          expect(Simple::Service.context.a).to eq("b")
+          block_called = true
+        end
+
+        # overwrite value w/nil
+        Simple::Service.with_context(a: nil) do
+          expect(Simple::Service.context.a).to be_nil
+          Simple::Service.context.a = "c"
+          expect(Simple::Service.context.a).to eq("c")
+        end
+        expect(Simple::Service.context.a).to eq("a")
+      end
+
+      expect(block_called).to eq(true)
+    end
+  end
+end
+
 describe Simple::Service::Context do
   let(:context) { Simple::Service::Context.new }
-  
+
   before do
     context.one = 1
   end
 
-  describe "reading" do
+  describe "invalid identifier" do
+    it "raises an error" do
+      expect { context.one! }.to raise_error(NoMethodError)
+    end
+  end
+
+  describe "context reading" do
     it "returns a value if set" do
       expect(context.one).to eq(1)
     end
 
     it "returns nil if not set" do
       expect(context.two).to be_nil
     end
   end
 
-  describe "writing" do
+  describe "context writing" do
     it "sets a value if it does not exist yet" do
-      context.two = 2 
+      context.two = 2
       expect(context.two).to eq(2)
     end
 
     it "raises a ReadOnly error if the value exists and is not equal" do
-      expect {
-        context.one = 2 
-      }.to raise_error(::Simple::Service::Context::ReadOnlyError)
+      expect { context.one = 2 }.to raise_error(::Simple::Service::ContextReadOnlyError)
     end
 
     it "sets the value if it exists and is equal" do
       context.one = 1
       expect(context.one).to eq(1)