Extract constant for LfsPointerFile::VERSION_LINE

lib/gitlab/git/lfs_pointer_file.rb

 module Gitlab
   module Git
     class LfsPointerFile
+      VERSION = "https://git-lfs.github.com/spec/v1".freeze
+      VERSION_LINE = "version #{VERSION}".freeze
+
       def initialize(data)
         @data = data
       end
 
       def pointer
         @pointer ||= <<~FILE
-          version https://git-lfs.github.com/spec/v1
+          #{VERSION_LINE}
           oid sha256:#{sha256}
           size #{size}
         FILE

spec/services/files/create_service_spec.rb

@@ -43,7 +43,7 @@ describe Files::CreateService do
 
           blob = repository.blob_at('lfs', file_path)
 
-          expect(blob.data).not_to start_with('version https://git-lfs.github.com/spec/v1')
+          expect(blob.data).not_to start_with(Gitlab::Git::LfsPointerFile::VERSION_LINE)
           expect(blob.data).to eq(file_content)
         end
       end
@@ -58,7 +58,7 @@ describe Files::CreateService do
 
           blob = repository.blob_at('lfs', file_path)
 
-          expect(blob.data).to start_with('version https://git-lfs.github.com/spec/v1')
+          expect(blob.data).to start_with(Gitlab::Git::LfsPointerFile::VERSION_LINE)
         end
 
         it "creates an LfsObject with the file's content" do

spec/services/files/multi_service_spec.rb

@@ -126,7 +126,7 @@ describe Files::MultiService do
 
         blob = repository.blob_at('lfs', new_file_path)
 
-        expect(blob.data).to start_with('version https://git-lfs.github.com/spec/v1')
+        expect(blob.data).to start_with(Gitlab::Git::LfsPointerFile::VERSION_LINE)
       end
 
       it "creates an LfsObject with the file's content" do
@@ -145,7 +145,7 @@ describe Files::MultiService do
 
           blob = repository.blob_at('lfs', new_file_path)
 
-          expect(blob.data).to start_with('version https://git-lfs.github.com/spec/v1')
+          expect(blob.data).to start_with(Gitlab::Git::LfsPointerFile::VERSION_LINE)
         end
 
         it "creates an LfsObject with the file's content" do

spec/services/lfs/file_transformer_spec.rb

@@ -53,7 +53,7 @@ describe Lfs::FileTransformer do
       it 'returns an LFS pointer' do
         result = subject.new_file(file_path, file_content)
 
-        expect(result.content).to start_with('version https://git-lfs.github.com/spec/v1')
+        expect(result.content).to start_with(Gitlab::Git::LfsPointerFile::VERSION_LINE)
       end
 
       it 'returns LFS pointer encoding as text' do
@@ -68,7 +68,7 @@ describe Lfs::FileTransformer do
         it "doesn't create LFS pointers" do
           new_content = subject.new_file(file_path, file_content).content
 
-          expect(new_content).not_to start_with('version https://git-lfs.github.com/spec/v1')
+          expect(new_content).not_to start_with(Gitlab::Git::LfsPointerFile::VERSION_LINE)
           expect(new_content).to eq(file_content)
         end
       end