lib/mixlib/install.rb in mixlib-install-0.8.0.alpha.8 vs lib/mixlib/install.rb in mixlib-install-1.0.0

@@ -16,10 +16,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
 
 require "mixlib/versioning"
+require "mixlib/shellout"
 
 require "mixlib/install/backend"
 require "mixlib/install/options"
 require "mixlib/install/generator"
 require "mixlib/install/generator/bourne"
@@ -35,12 +36,14 @@
     end
 
     #
     # Fetch artifact metadata information
     #
-    # @return [ArtifactInfo] fetched artifact data
-    #
+    # @return [Array<ArtifactInfo>] list of fetched artifact data for the configured
+    # channel, product name, and product version.
+    # @return [ArtifactInfo] fetched artifact data for the configured
+    # channel, product name, product version and platform info
     def artifact_info
       Backend.info(options)
     end
 
     #
@@ -92,11 +95,13 @@
     # Returns true if an upgradable version is available, false otherwise.
     #
     def upgrade_available?
       return true if current_version.nil?
 
-      available_ver = Mixlib::Versioning.parse(artifact_info.first.version)
+      artifact = artifact_info
+      artifact = artifact.first if artifact.is_a? Array
+      available_ver = Mixlib::Versioning.parse(artifact.version)
       current_ver = Mixlib::Versioning.parse(current_version)
       (available_ver > current_ver)
     end
 
     #
@@ -109,14 +114,17 @@
 
     #
     # Returns a Hash containing the platform info options
     #
     def self.detect_platform
-      platform_info = if RbConfig::CONFIG["host_os"] =~ /mswin|mingw/
-                        `#{self.detect_platform_ps1}`.split
-                      else
-                        `#{self.detect_platform_sh}`.split
-                      end
+      detect_command = if Gem.win_platform?
+                         Mixlib::ShellOut.new(self.detect_platform_ps1)
+                       else
+                         Mixlib::ShellOut.new(self.detect_platform_sh)
+                       end
+
+      detect_command.run_command
+      platform_info = detect_command.stdout.split
 
       {
         platform: platform_info[0],
         platform_version: platform_info[1],
         architecture: platform_info[2],