Build specs for config_hash (to appease coveralls)

Signed-off-by: Josep M. Blanquer <blanquer@gmail.com>

spec/praxis-blueprints/config_hash_spec.rb

@@ -0,0 +1,64 @@
+# frozen_string_literal: true
+require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
+
+describe Praxis::ConfigHash do
+  subject(:instance) { Praxis::ConfigHash.new(hash, &block) }
+  let(:hash) { { one: ['existing'], two: 'dos' } }
+  let(:block) do
+    proc { 'abc' }
+  end
+
+  context 'initialization' do
+    it 'saves the passed hash' do
+      expect(subject.hash).to be(hash)
+    end
+  end
+
+  context '.from' do
+    subject(:instance) { Praxis::ConfigHash.from(hash, &block) }
+    it 'returns an instance' do
+      expect(subject).to be_kind_of(Praxis::ConfigHash)
+      expect(subject.hash).to be(hash)
+    end
+  end
+
+  context '#to_hash' do
+    let(:block) do
+      proc { hash['i_was'] = 'here' }
+    end
+    it 'evaluates the block and returns the resulting hash' do
+      expect(subject.to_hash).to eq(subject.hash)
+      expect(subject.hash['i_was']).to eq('here')
+    end
+  end
+
+  context '#method_missing' do
+    context 'when keys do not exist in the hash key' do
+      it 'sets a single value to the hash' do
+        subject.some_name 'someval'
+        expect(subject.hash[:some_name]).to eq('someval')
+      end
+      it 'sets a multiple values to the hash key' do
+        subject.some_name 'someval', 'other1', 'other2'
+        expect(subject.hash[:some_name]).to include('someval', 'other1', 'other2')
+      end
+    end
+    context 'when keys already exist in the hash key' do
+      it 'adds one value to the hash' do
+        subject.one'newval'
+        expect(subject.hash[:one]).to match_array(%w(existing newval))
+      end
+      it 'adds multiple values to the hash key' do
+        subject.one 'newval', 'other1', 'other2'
+        expect(subject.hash[:one]).to match_array(%w(existing newval other1 other2))
+      end
+      context 'when passing a value and a block' do
+        let(:my_block) { proc {} }
+        it 'adds the tuple to the hash key' do
+          subject.one 'val', &my_block
+          expect(subject.hash[:one]).to include(['val', my_block])
+        end
+      end
+    end
+  end
+end