Replace global macros with methods. Thanks @asterite

spec/helpers_spec.cr

@@ -0,0 +1,37 @@
+require "./spec_helper"
+
+describe "Macros" do
+  describe "#basic_auth" do
+    it "adds HTTPBasicAuthHandler" do
+      basic_auth "serdar", "123"
+      Kemal.config.handlers.size.should eq 1
+    end
+  end
+
+  describe "#public_folder" do
+    it "sets public folder" do
+      public_folder "/some/path/to/folder"
+      Kemal.config.public_folder.should eq("/some/path/to/folder")
+    end
+  end
+
+  describe "#add_handler" do
+    it "adds a custom handler" do
+      add_handler CustomTestHandler.new
+      Kemal.config.handlers.size.should eq 1
+    end
+  end
+
+  describe "#logging" do
+    it "sets logging status" do
+      logging false
+      Kemal.config.logging.should eq false
+    end
+    it "sets a custom logger" do
+      config = Kemal::Config::INSTANCE
+      logger CustomLogHandler.new("production")
+      config.handlers.first.should be_a(CustomLogHandler)
+      config.logger.should be_a(CustomLogHandler)
+    end
+  end
+end