Limit locale resource to Linux

Platforms that don't use /etc/locale.conf aren't supported

Signed-off-by: Bryan McLellan <btm@loftninjas.org>

2 files changed, 80 insertions, 57 deletions

diff --git a/lib/chef/resource/locale.rb b/lib/chef/resource/locale.rb
index b16cfe7e3c..52170e8765 100644
--- a/lib/chef/resource/locale.rb
+++ b/lib/chef/resource/locale.rb
@@ -28,6 +28,7 @@ class Chef
       LC_VARIABLES = %w{LC_ADDRESS LC_COLLATE LC_CTYPE LC_IDENTIFICATION LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE LC_TIME}.freeze
       LOCALE_CONF = "/etc/locale.conf".freeze
       LOCALE_REGEX = /\A\S+/.freeze
+      LOCALE_PLATFORM_FAMILIES = %w{debian}.freeze
 
       property :lang, String,
                description: "Sets the default system language.",
@@ -71,28 +72,31 @@ class Chef
               update_locale
             end
           end
-        rescue
-          # It might affect debugging
-          raise "#{node['platform']} platform is not supported by the chef locale resource. " +
-            "If you believe this is in error please file an issue at https://github.com/chef/chef/issues"
         end
       end
 
       action_class do
+        # Avoid running this resource on platforms that don't use /etc/locale.conf
+        #
+        def define_resource_requirements
+          requirements.assert(:all_actions) do |a|
+            a.assertion { LOCALE_PLATFORM_FAMILIES.include?(node[:platform_family]) }
+            a.failure_message(Chef::Exceptions::ProviderNotFound, "The locale resource is not supported on platform family: #{node[:platform_family]}")
+          end
+
+          requirements.assert(:all_actions) do |a|
+            # RHEL/CentOS type platforms don't have locale-gen
+            a.assertion { shell_out("locale-gen") }
+            a.failure_message(Chef::Exceptions::ProviderNotFound, "The locale resource requires the locale-gen tool")
+          end
+        end
 
         # Generates the localisation files from templates using locale-gen.
         # @see http://manpages.ubuntu.com/manpages/cosmic/man8/locale-gen.8.html
         # @raise [Mixlib::ShellOut::ShellCommandFailed] not a supported language or locale
         #
         def generate_locales
-          bash "Generating locales: #{unavailable_locales.join(' ')}" do
-            code <<~CODE
-              if type locale-gen >/dev/null 2>&1
-              then
-                locale-gen #{unavailable_locales.join(' ')}
-              fi
-            CODE
-          end
+          shell_out!("locale-gen #{unavailable_locales.join(' ')}")
         end
 
         # Updates system locale by appropriately writing them in /etc/locale.conf
diff --git a/spec/functional/resource/locale_spec.rb b/spec/functional/resource/locale_spec.rb
index 61ef4630bc..83dfc2d007 100644
--- a/spec/functional/resource/locale_spec.rb
+++ b/spec/functional/resource/locale_spec.rb
@@ -18,61 +18,80 @@
 
 require "spec_helper"
 
-describe Chef::Resource::Locale, :requires_root, :not_supported_on_windows do
-
-  let(:node) { Chef::Node.new }
+describe Chef::Resource::Locale, :requires_root do
+  let(:node) do
+    n = Chef::Node.new
+    n.consume_external_attrs(OHAI_SYSTEM.data, {})
+    n
+  end
   let(:events) { Chef::EventDispatch::Dispatcher.new }
   let(:run_context) { Chef::RunContext.new(node, {}, events) }
   let(:resource) { Chef::Resource::Locale.new("fakey_fakerton", run_context) }
 
-  def sets_system_locale(*locales)
-    system_locales = File.readlines("/etc/locale.conf")
-    expect(system_locales.map(&:strip)).to eq(locales)
-  end
+  context "on debian/ubuntu", :debian_family_only do
+    def sets_system_locale(*locales)
+      system_locales = File.readlines("/etc/locale.conf")
+      expect(system_locales.map(&:strip)).to eq(locales)
+    end
 
-  def unsets_system_locale(*locales)
-    system_locales = File.readlines("/etc/locale.conf")
-    expect(system_locales.map(&:strip)).not_to eq(locales)
-  end
+    def unsets_system_locale(*locales)
+      system_locales = File.readlines("/etc/locale.conf")
+      expect(system_locales.map(&:strip)).not_to eq(locales)
+    end
 
-  describe "action: update" do
-    context "Sets system variable" do
-      it "when LC var is given" do
-        resource.lc_env({ "LC_MESSAGES" => "en_US" })
-        resource.run_action(:update)
-        sets_system_locale("LC_MESSAGES=en_US")
+    describe "action: update" do
+      context "Sets system variable" do
+        it "when LC var is given" do
+          resource.lc_env({ "LC_MESSAGES" => "en_US" })
+          resource.run_action(:update)
+          sets_system_locale("LC_MESSAGES=en_US")
+        end
+        it "when lang is given" do
+          resource.lang("en_US")
+          resource.run_action(:update)
+          sets_system_locale("LANG=en_US")
+        end
+        it "when both lang & LC vars are given" do
+          resource.lang("en_US")
+          resource.lc_env({ "LC_TIME" => "en_IN" })
+          resource.run_action(:update)
+          sets_system_locale("LANG=en_US", "LC_TIME=en_IN")
+        end
       end
-      it "when lang is given" do
-        resource.lang("en_US")
-        resource.run_action(:update)
-        sets_system_locale("LANG=en_US")
-      end
-      it "when both lang & LC vars are given" do
-        resource.lang("en_US")
-        resource.lc_env({ "LC_TIME" => "en_IN" })
-        resource.run_action(:update)
-        sets_system_locale("LANG=en_US", "LC_TIME=en_IN")
+
+      context "Unsets system variable" do
+        it "when LC var is not given" do
+          resource.lc_env()
+          resource.run_action(:update)
+          unsets_system_locale("LC_MESSAGES=en_US")
+        end
+        it "when lang is not given" do
+          resource.lang()
+          resource.run_action(:update)
+          unsets_system_locale("LANG=en_US")
+        end
+        it "when both lang & LC vars are not given" do
+          resource.lang()
+          resource.lc_env()
+          resource.run_action(:update)
+          unsets_system_locale("LANG=en_US", "LC_TIME=en_IN")
+          sets_system_locale("")
+        end
       end
     end
+  end
 
-    context "Unsets system variable" do
-      it "when LC var is not given" do
-        resource.lc_env()
-        resource.run_action(:update)
-        unsets_system_locale("LC_MESSAGES=en_US")
-      end
-      it "when lang is not given" do
-        resource.lang()
-        resource.run_action(:update)
-        unsets_system_locale("LANG=en_US")
-      end
-      it "when both lang & LC vars are not given" do
-        resource.lang()
-        resource.lc_env()
-        resource.run_action(:update)
-        unsets_system_locale("LANG=en_US", "LC_TIME=en_IN")
-        sets_system_locale("")
-      end
+  context "on rhel", :rhel do
+    it "raises an exception due lacking the locale-gen tool" do
+      resource.lang("en_US")
+      expect { resource.run_action(:update) }.to raise_error(Chef::Exceptions::ProviderNotFound)
+    end
+  end
+
+  context "on macos", :macos_only do
+    it "raises an exception due to being an unsupported platform" do
+      resource.lang("en_US")
+      expect { resource.run_action(:update) }.to raise_error(Chef::Exceptions::ProviderNotFound)
     end
   end
 end