Handle duplicated files on GlobUtils (#151)

* Handle duplicated files on GlobUtils

* Update src/ameba/glob_utils.cr

Co-Authored-By: George Dietrich <yomoejoe@gmail.com>

Co-authored-by: George Dietrich <yomoejoe@gmail.com>

spec/ameba/glob_utils_spec.cr

@@ -26,6 +26,13 @@ module Ameba
           .find_files_by_globs(["**/*_spec.cr", "!**/#{current_file_basename}"])
           .should_not contain current_file_path
       end
+
+      it "doesn't return duplicated globs" do
+        subject
+          .find_files_by_globs(["**/*_spec.cr", "**/*_spec.cr"])
+          .count(current_file_path)
+          .should eq 1
+      end
     end
 
     describe "#expand" do
@@ -33,6 +40,11 @@ module Ameba
         subject.expand(["**/#{current_file_basename}"])
           .should eq [current_file_path]
       end
+
+      it "does not list duplicated files" do
+        subject.expand(["**/#{current_file_basename}", "**/#{current_file_basename}"])
+          .should eq [current_file_path]
+      end
     end
   end
 end

src/ameba/glob_utils.cr

@@ -25,7 +25,7 @@ module Ameba
       globs.map do |glob|
         glob += "/**/*.cr" if File.directory?(glob)
         Dir[glob]
-      end.flatten
+      end.flatten.uniq!
     end
 
     private def rejected_globs(globs)