[PodspecFinder] Add some basic specs

spec/unit/sandbox/podspec_finder_spec.rb

+require File.expand_path('../../../spec_helper', __FILE__)
+
+module Pod
+  describe Sandbox::PodspecFinder do
+    before do
+      @root = Pathname(Dir.mktmpdir)
+      @finder = Sandbox::PodspecFinder.new(@root)
+    end
+
+    after do
+      @root.rmtree
+    end
+
+    it 'returns an empty hash when no podspecs are found' do
+      @finder.podspecs.should.be.empty
+    end
+
+    it "warns when a found podspec can't be parsed" do
+      @root.+('RestKit.podspec.json').open('w') { |f| f << '{]' }
+      @finder.podspecs.should.be.empty
+      UI.warnings.should.include "Unable to load a podspec from `RestKit.podspec.json`, skipping:\n\n"
+    end
+
+    it 'ignores podspecs not in the root' do
+      path = @root + 'Dir/RestKit.podspec.json'
+      path.parent.mkpath
+      path.open('w') { |f| f << '{"name":"RestKit"}' }
+
+      @finder.podspecs.should.be.empty
+    end
+
+    it 'groups found podspecs by name' do
+      @root.+('Realm.podspec.json').open('w') { |f| f << '{"name":"Realm"}' }
+      @root.+('RealmSwift.podspec').open('w') { |f| f << 'Pod::Specification.new { |s| s.name = "RealmSwift" }' }
+
+      @finder.podspecs.should == {
+        'Realm' => Pod::Specification.new { |s| s.name = 'Realm' },
+        'RealmSwift' => Pod::Specification.new { |s| s.name = 'RealmSwift' },
+      }
+    end
+
+    it 'caches the podspecs' do
+      @finder.podspecs
+      Pathname.expects(:glob).never
+      @finder.podspecs
+    end
+  end
+end