Add language scala

lib/ohai/plugins/scala.rb

@@ -0,0 +1,33 @@
+# Author:: Christopher M Luciano (<[email protected]>)
+# © Copyright IBM Corporation 2015.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+Ohai.plugin(:Scala) do
+  provides "languages/scala"
+
+  depends "languages"
+
+  collect_data do
+    output = nil
+
+    scala = Mash.new
+    so = shell_out("scala -version")
+    if so.exitstatus == 0
+      output =  so.stdout.split
+      scala[:version] = output[4]
+      languages[:scala] = scala if scala[:version]
+    end
+  end
+end

spec/unit/plugins/scala_spec.rb

@@ -0,0 +1,44 @@
+# Author:: Christopher M Luciano (<[email protected]>)
+# © Copyright IBM Corporation 2015.
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require File.expand_path(File.join(File.dirname(__FILE__), '..', '..', '/spec_helper.rb'))
+
+describe Ohai::System, "plugin scala" do
+  let(:stdout) {"Scala code runner version 2.11.6 -- Copyright 2002-2013, LAMP/EPFL"}
+  let (:plugin) do
+    plugin = get_plugin("scala")
+    plugin[:languages] = Mash.new
+    allow(plugin).to receive(:shell_out).with("scala -version").and_return(mock_shell_out(0, stdout, ""))
+    plugin
+  end
+
+  it "should get the scala version" do
+    expect(plugin).to receive(:shell_out).with("scala -version").and_return(mock_shell_out(0, stdout, ""))
+    plugin.run
+  end
+
+  it "should set languages[:scala][:version]" do
+    plugin.run
+    expect(plugin.languages[:scala][:version]).to eql("2.11.6")
+  end
+
+  it "should not set the languages[:scala] if scala command fails" do
+    allow(plugin).to receive(:shell_out).with("scala -version").and_return(mock_shell_out(1, stdout, ""))
+    plugin.run
+    expect(plugin.languages).not_to have_key(:scala)
+  end
+end