[Spec] Add tests for PodVariant

spec/unit/installer/analyzer/pod_variant_spec.rb

+require File.expand_path('../../../../spec_helper', __FILE__)
+
+module Pod
+  describe PodVariant = Installer::Analyzer::PodVariant do
+    before do
+      @specs = [stub('Spec'), stub('Spec/Foo')]
+      @platform = Platform.ios
+    end
+
+    it 'can be initialized with specs and platform' do
+      variant = PodVariant.new(@specs, @platform)
+      variant.specs.should == @specs
+      variant.platform.should == @platform
+      variant.requires_frameworks.should == false
+    end
+
+    it 'can be initialized with specs, platform and whether it requires frameworks' do
+      variant = PodVariant.new(@specs, @platform, true)
+      variant.specs.should == @specs
+      variant.platform.should == @platform
+      variant.requires_frameworks.should == true
+    end
+
+    it 'can return the root spec' do
+      spec = fixture_spec('banana-lib/BananaLib.podspec')
+      variant = PodVariant.new([spec], Platform.ios)
+      variant.root_spec.should == spec
+    end
+
+    it 'can be compared for equality with another variant with the same specs, platform and value for whether it requires frameworks' do
+      spec = PodVariant.new(@specs, @platform, false)
+      spec.should == PodVariant.new(@specs, @platform, false)
+      spec.should.not == PodVariant.new([@specs.first], @platform, false)
+      spec.should.not == PodVariant.new(@specs, Platform.osx, false)
+      spec.should.not == PodVariant.new(@specs, @platform, true)
+    end
+
+    it 'can be used as hash keys' do
+      k0 = PodVariant.new(@specs, @platform, false)
+      v0 = stub('Value at index 0')
+      k1 = PodVariant.new(@specs, @platform, true)
+      v1 = stub('Value at index 1')
+      hash = { k0 => v0, k1 => v1 }
+      hash[k0].should == v0
+      hash[k1].should == v1
+    end
+  end
+end