test: Add tests for apply and check

- Create test_mise_install.rb

Author: toshimaru

test/serverkit/resources/test_mise_install.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class Serverkit::Resources::TestMiseInstall < Minitest::Test
+  ATTRIBUTES = {"name" => "test"}
+
+  def setup
+    @resource = Serverkit::Resources::MiseInstall.new({}, ATTRIBUTES)
+  end
+
+  def test_resource_instance
+    assert_instance_of Serverkit::Resources::MiseInstall, @resource
+  end
+
+  def test_apply
+    @resource.stub :run_command, ->(cmd) { cmd } do
+      assert_equal("mise install test", @resource.apply)
+    end
+  end
+
+  def test_check
+    @resource.stub :check_command, ->(cmd) { cmd } do
+      assert_equal('mise ls test | grep "$(mise latest test)"', @resource.check)
+    end
+  end
+end