add first minitest

Author: drewhoffer

bin/test

@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+$LOAD_PATH.unshift File.expand_path("../lib", __dir__)
+Dir.glob(File.expand_path("../spec/**/*_test.rb", __dir__)).each do |file|
+  require file
+end

spec/generator_test.rb

@@ -0,0 +1,33 @@
+require "minitest/autorun"
+require_relative "../lib/rbi_generator/generator"
+
+class RbiGeneratorTest < Minitest::Test
+  def setup
+    @test_file = "test/test_class.rb"
+    File.write(@test_file, <<~RUBY)
+      class TestClass
+        def hello; end
+        def test(x); end
+        def add(x, y); end
+      end
+    RUBY
+    @generator = RbiGenerator::Generator.new(@test_file)
+  end
+
+  def teardown
+    File.delete(@test_file) if File.exist?(@test_file)
+    rbi_file = @test_file.sub(/\.rb$/, ".rbi")
+    File.delete(rbi_file) if File.exist?(rbi_file)
+  end
+
+  def test_generate_creates_rbi_file
+    @generator.generate
+    rbi_path = @test_file.sub(/\.rb$/, ".rbi")
+    assert File.exist?(rbi_path), "RBI file should be created"
+    content = File.read(rbi_path)
+    assert_includes content, "class TestClass"
+    assert_includes content, "def hello; end"
+    assert_includes content, "def test(x); end"
+    assert_includes content, "def add(x, y); end"
+  end
+end