Touch should honour if and unless options (#1354)

* Honour if: and unless: options in on_touch

The on_touch callback was not honouring the if: or unless: options
that were set in the model config.

* Fix some test descriptions

These tests were actually testing the opposite of what they said they
were testing.

* Doc: changelog entry for #1349

[ci skip]

Co-authored-by: Nigel Williams <nigel.williams@marketplacer.com>

CHANGELOG.md

@@ -11,7 +11,8 @@ recommendations of [keepachangelog.com](http://keepachangelog.com/).
 
 ### Added
 
-- None
+- [#1349](https://github.com/paper-trail-gem/paper_trail/pull/1349) -
+  `if:` and `unless:` work with `touch` events now.
 
 ### Fixed
 

lib/paper_trail/model_config.rb

@@ -91,11 +91,13 @@ def on_update
     # @api public
     def on_touch
       @model_class.after_touch { |r|
-        r.paper_trail.record_update(
-          force: RAILS_LT_6_0,
-          in_after_callback: true,
-          is_touch: true
-        )
+        if r.paper_trail.save_version?
+          r.paper_trail.record_update(
+            force: RAILS_LT_6_0,
+            in_after_callback: true,
+            is_touch: true
+          )
+        end
       }
     end
 

spec/models/translation_spec.rb

@@ -24,6 +24,14 @@
         expect(PaperTrail::Version.count).to(eq(0))
       end
     end
+
+    context "when after touch" do
+      it "not change the number of versions" do
+        translation = described_class.create!(headline: "Headline")
+        translation.touch
+        expect(PaperTrail::Version.count).to(eq(0))
+      end
+    end
   end
 
   context "with US translations" do
@@ -44,6 +52,15 @@
         translation.update(content: "Content")
         expect(PaperTrail::Version.count).to(eq(0))
       end
+
+      it "touch does not change the number of versions" do
+        translation = described_class.new(headline: "Headline")
+        translation.language_code = "US"
+        translation.type = "DRAFT"
+        translation.save!
+        translation.touch
+        expect(PaperTrail::Version.count).to(eq(0))
+      end
     end
 
     context "with non-drafts" do
@@ -52,14 +69,21 @@
         expect(PaperTrail::Version.count).to(eq(1))
       end
 
-      it "update does not change the number of versions" do
+      it "update changes the number of versions" do
         translation = described_class.create!(headline: "Headline", language_code: "US")
         translation.update(content: "Content")
         expect(PaperTrail::Version.count).to(eq(2))
         expect(translation.versions.size).to(eq(2))
       end
 
-      it "destroy does not change the number of versions" do
+      it "touch changes the number of versions" do
+        translation = described_class.create!(headline: "Headline", language_code: "US")
+        translation.touch
+        expect(PaperTrail::Version.count).to(eq(2))
+        expect(translation.versions.size).to(eq(2))
+      end
+
+      it "destroy changes the number of versions" do
         translation = described_class.new(headline: "Headline")
         translation.language_code = "US"
         translation.save!