tests: Modularize import checker

tests/main.cr

@@ -1,38 +1,7 @@
 require "spec"
-require "colorize"
 require "./spec_helper"
 
-hint = ""
-
-describe "./modules/default.nix" do
-  it "imports all modules in directory" do
-    all_modules = Dir.children("modules")
-    all_modules.delete("default.nix")
-    modules = File.read("./modules/default.nix")
-
-    all_modules.each do |current_module|
-      hint = "Missing ./#{current_module} import in ./modules/default.nix."
-      modules.includes?("./#{current_module}").should be_true
-    end
-
-    hint = ""
-  end
-
-  it "only imports modules that exist" do
-    all_modules = Dir.children("modules")
-    all_modules.delete("default.nix")
-
-    File.each_line("./modules/default.nix") do |line|
-      if line.includes? "./"
-        imported_file = line.lstrip(' ').lstrip("./")
-        hint = "./#{imported_file} was imported but doesn't exist in directory ./modules/."
-        all_modules.includes?(imported_file).should be_true
-      end
-    end
-
-    hint = ""
-  end
-end
+check_top_level_imports("modules")
 
 describe "./overlays/joshuto/default.nix" do
   it "uses the latest joshuto commit" do
@@ -45,7 +14,3 @@ describe "./overlays/rofi/default.nix" do
     check_latest_commit("lbonn/rofi", branch: "wayland")
   end
 end
-
-Spec.after_suite do
-  hint.empty? || puts "✗ #{hint}".colorize(:yellow)
-end

tests/spec_helper.cr

@@ -1,6 +1,7 @@
 require "spec"
 require "http/client"
 require "json"
+require "colorize"
 
 def check_latest_commit(repository, branch = "master")
   response = HTTP::Client.get "https://api.github.com/repos/#{repository}/branches/#{branch}"
@@ -14,3 +15,41 @@ def check_latest_commit(repository, branch = "master")
     end
   end
 end
+
+hint = ""
+
+def check_top_level_imports(directory)
+  describe "./#{directory}/default.nix" do
+    it "imports all modules in directory" do
+      all_modules = Dir.children(directory)
+      all_modules.delete("default.nix")
+      modules = File.read("./#{directory}/default.nix")
+
+      all_modules.each do |current_module|
+        hint = "Missing ./#{current_module} import in ./#{directory}/default.nix."
+        modules.includes?("./#{current_module}").should be_true
+      end
+
+      hint = ""
+    end
+
+    it "only imports modules that exist" do
+      all_modules = Dir.children(directory)
+      all_modules.delete("default.nix")
+
+      File.each_line("./#{directory}/default.nix") do |line|
+        if line.includes? "./"
+          imported_file = line.lstrip(' ').lstrip("./")
+          hint = "./#{imported_file} was imported but doesn't exist in directory ./#{directory}/."
+          all_modules.includes?(imported_file).should be_true
+        end
+      end
+
+      hint = ""
+    end
+  end
+end
+
+Spec.after_suite do
+  hint.empty? || puts "✗ #{hint}".colorize(:yellow)
+end