add allow_downgrade to zypper_package resource

Signed-off-by: Eike Waldt <waldt@b1-systems.de>

3 files changed, 14 insertions, 1 deletions

diff --git a/lib/chef/provider/package/zypper.rb b/lib/chef/provider/package/zypper.rb
index 41e8433046..77d619d205 100644
--- a/lib/chef/provider/package/zypper.rb
+++ b/lib/chef/provider/package/zypper.rb
@@ -103,7 +103,7 @@ class Chef
         end
 
         def install_package(name, version)
-          zypper_package("install", *options, "--auto-agree-with-licenses", name, version)
+          zypper_package("install", *options, "--auto-agree-with-licenses", allow_downgrade, name, version)
         end
 
         def upgrade_package(name, version)
@@ -147,6 +147,10 @@ class Chef
         def gpg_checks
           "--no-gpg-checks" unless new_resource.gpg_check
         end
+
+        def allow_downgrade
+          "--oldpackage" if new_resource.allow_downgrade
+        end
       end
     end
   end
diff --git a/lib/chef/resource/zypper_package.rb b/lib/chef/resource/zypper_package.rb
index 6c6e308159..20b1a9f25f 100644
--- a/lib/chef/resource/zypper_package.rb
+++ b/lib/chef/resource/zypper_package.rb
@@ -25,6 +25,7 @@ class Chef
       provides :package, platform_family: "suse"
 
       property :gpg_check, [ TrueClass, FalseClass ], default: lazy { Chef::Config[:zypper_check_gpg] }
+      property :allow_downgrade, [ true, false ], default: false
     end
   end
 end
diff --git a/spec/unit/provider/package/zypper_spec.rb b/spec/unit/provider/package/zypper_spec.rb
index b20a548c73..598fedc9fa 100644
--- a/spec/unit/provider/package/zypper_spec.rb
+++ b/spec/unit/provider/package/zypper_spec.rb
@@ -140,6 +140,14 @@ describe Chef::Provider::Package::Zypper do
       provider.install_package(["emacs"], ["1.0"])
     end
 
+    it "setting the property should allow downgrade" do
+      new_resource.allow_downgrade true
+      shell_out_expectation!(
+        "zypper", "--non-interactive", "install", "--auto-agree-with-licenses", "--oldpackage", "emacs=1.0"
+      )
+      provider.install_package(["emacs"], ["1.0"])
+    end
+
     it "should add user provided options to the command" do
       new_resource.options "--user-provided"
       shell_out_expectation!(