Adding tests.

lib/replit/database/client.rb

@@ -17,8 +17,8 @@ class Client
       # @param [String] custom_url optional custom URL
       #
       def initialize(custom_url = nil)
-        @database_url = ENV["REPLIT_DB_URL"]
-        @database_url = custom_url unless custom_url.nil?
+        @database_url = ENV["REPLIT_DB_URL"] if ENV["REPLIT_DB_URL"]
+        @database_url = custom_url if custom_url
       end
 
       #
@@ -133,13 +133,15 @@ def delete_multiple(keys = [])
       private
 
       def verify_connection_url
-        throw Replit::Database::ConfigurationError "Missing database connection url" unless @database_url
+        error = Replit::Database::ConfigurationError.new "Missing database connection url"
+        raise error unless @database_url
+        raise error if @database_url.empty?
       end
 
       def json_parse(string, key)
         JSON.parse(string, { symbolize_names: true })
       rescue JSON::ParserError
-        throw Replit::Database::SyntaxError "Failed to parse value of #{
+        raise Replit::Database::SyntaxError, "Failed to parse value of #{
           key
         }, try passing a raw option to get the raw value"
       end

replitdb.gemspec

@@ -19,10 +19,8 @@ Gem::Specification.new do |spec|
   spec.metadata["source_code_uri"] = "https://github.com/janlindblom/ruby-replitdb"
   spec.metadata["changelog_uri"] = "https://github.com/janlindblom/ruby-replitdb/blob/main/CHANGELOG.md"
 
-  # Specify which files should be added to the gem when it is released.
-  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
   spec.files = Dir.chdir(File.expand_path(__dir__)) do
-    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{\A(?:test|spec|features)/}) }
+    `git ls-files -z`.split("\x0").reject { |f| f.match(%r{\A(?:test|spec|features|.github)/}) }
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }

spec/replit_spec.rb

@@ -13,11 +13,13 @@
 RSpec.describe Replit::Database::Client do
   context "without a defined connection URL" do
     before :all do
-      @client = Replit::Database::Client.new
+      @client = Replit::Database::Client.new("")
     end
 
-    it "will not work" do
-      expect(@client.get("dummy")).to be_nil
+    it "will raise a ConfigurationError" do
+      expect { @client.get("dummy") }.to raise_error Replit::Database::ConfigurationError
+      expect { @client.set("dummy", "value") }.to raise_error Replit::Database::ConfigurationError
+      expect { @client.delete("dummy") }.to raise_error Replit::Database::ConfigurationError
     end
   end
 end