1 files changed, 53 insertions, 0 deletions
diff --git a/spec/lib/gitlab/sql/glob_spec.rb b/spec/lib/gitlab/sql/glob_spec.rb
new file mode 100644
index 00000000000..451c583310d
--- /dev/null
+++ b/spec/lib/gitlab/sql/glob_spec.rb
@@ -0,0 +1,53 @@
+require 'spec_helper'
+
+describe Gitlab::SQL::Glob, lib: true do
+  describe '.to_like' do
+    it 'matches * as %' do
+      expect(glob('apple', '*')).to be(true)
+      expect(glob('apple', 'app*')).to be(true)
+      expect(glob('apple', 'apple*')).to be(true)
+      expect(glob('apple', '*pple')).to be(true)
+      expect(glob('apple', 'ap*le')).to be(true)
+
+      expect(glob('apple', '*a')).to be(false)
+      expect(glob('apple', 'app*a')).to be(false)
+      expect(glob('apple', 'ap*l')).to be(false)
+    end
+
+    it 'matches % literally' do
+      expect(glob('100%', '100%')).to be(true)
+
+      expect(glob('100%', '%')).to be(false)
+    end
+
+    it 'matches _ literally' do
+      expect(glob('^_^', '^_^')).to be(true)
+
+      expect(glob('^A^', '^_^')).to be(false)
+    end
+  end
+
+  def glob(string, pattern)
+    match(string, subject.to_like(quote(pattern)))
+  end
+
+  def match(string, pattern)
+    value = query("SELECT #{quote(string)} LIKE #{pattern}")
+              .rows.flatten.first
+
+    case value
+    when 't', 1
+      true
+    else
+      false
+    end
+  end
+
+  def query(sql)
+    ActiveRecord::Base.connection.select_all(sql)
+  end
+
+  def quote(string)
+    ActiveRecord::Base.connection.quote(string)
+  end
+end