Allow FoundBlob to access language from gitattributes

Extract language_from_git_attributes as a concern so it can
ben included in two blob classes.

2 files changed, 25 insertions, 16 deletions

diff --git a/spec/models/blob_spec.rb b/spec/models/blob_spec.rb
index da3b29dffb6..81e35e6c931 100644
--- a/spec/models/blob_spec.rb
+++ b/spec/models/blob_spec.rb
@@ -224,22 +224,6 @@ describe Blob do
     end
   end
 
-  describe '#language_from_gitattributes' do
-    subject(:blob) { fake_blob(path: 'file.md') }
-
-    it 'returns return value from gitattribute' do
-      expect(blob.project.repository).to receive(:gitattribute).with(blob.path, 'gitlab-language').and_return('erb?parent=json')
-
-      expect(blob.language_from_gitattributes).to eq('erb?parent=json')
-    end
-
-    it 'returns nil if project is absent' do
-      allow(blob).to receive(:project).and_return(nil)
-
-      expect(blob.language_from_gitattributes).to eq(nil)
-    end
-  end
-
   describe '#simple_viewer' do
     context 'when the blob is empty' do
       it 'returns an empty viewer' do
diff --git a/spec/models/concerns/blob_language_from_git_attributes_spec.rb b/spec/models/concerns/blob_language_from_git_attributes_spec.rb
new file mode 100644
index 00000000000..7f05073b08e
--- /dev/null
+++ b/spec/models/concerns/blob_language_from_git_attributes_spec.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe BlobLanguageFromGitAttributes do
+  include FakeBlobHelpers
+
+  let(:project) { build(:project, :repository) }
+
+  describe '#language_from_gitattributes' do
+    subject(:blob) { fake_blob(path: 'file.md') }
+
+    it 'returns return value from gitattribute' do
+      expect(blob.project.repository).to receive(:gitattribute).with(blob.path, 'gitlab-language').and_return('erb?parent=json')
+
+      expect(blob.language_from_gitattributes).to eq('erb?parent=json')
+    end
+
+    it 'returns nil if project is absent' do
+      allow(blob).to receive(:project).and_return(nil)
+
+      expect(blob.language_from_gitattributes).to eq(nil)
+    end
+  end
+end