diff --git a/plugins/commands/serve/service/guest_service.rb b/plugins/commands/serve/service/guest_service.rb
index 6cf962a91..9f62cbea6 100644
--- a/plugins/commands/serve/service/guest_service.rb
+++ b/plugins/commands/serve/service/guest_service.rb
@@ -22,7 +22,7 @@ module VagrantPlugins
             ),
           ]
           initialize_capability_platform!(caps, default_args)
-          super(*args, **opts, &block)
+          super
         end
 
         def detect_spec(*_)
diff --git a/plugins/commands/serve/service/host_service.rb b/plugins/commands/serve/service/host_service.rb
index 17e11fde1..c40f5cd6f 100644
--- a/plugins/commands/serve/service/host_service.rb
+++ b/plugins/commands/serve/service/host_service.rb
@@ -22,7 +22,7 @@ module VagrantPlugins
             ),
           ]
           initialize_capability_platform!(caps, default_args)
-          super(*args, **opts, &block)
+          super
         end
 
         def detect_spec(*_)
diff --git a/plugins/commands/serve/util.rb b/plugins/commands/serve/util.rb
index 389728c15..a095163c6 100644
--- a/plugins/commands/serve/util.rb
+++ b/plugins/commands/serve/util.rb
@@ -27,7 +27,7 @@ module VagrantPlugins
           @broker = opts.delete(:broker)
           raise ArgumentError,
             "Expected `Broker' to be provided" if @broker.nil?
-          super()
+          super
         end
       end
 
@@ -38,7 +38,7 @@ module VagrantPlugins
 
         def initialize(*args, **opts, &block)
           @mapper = Mappers.new(broker) if respond_to?(:broker)
-          super()
+          super
         end
       end
 
diff --git a/test/unit/plugins/commands/serve/service/host_service_test.rb b/test/unit/plugins/commands/serve/service/host_service_test.rb
new file mode 100644
index 000000000..76b5be8b2
--- /dev/null
+++ b/test/unit/plugins/commands/serve/service/host_service_test.rb
@@ -0,0 +1,176 @@
+require File.expand_path("../../../../../base", __FILE__)
+
+require Vagrant.source_root.join("plugins/commands/serve/command")
+require Vagrant.source_root.join("plugins/commands/serve/broker").to_s
+
+class DummyContext
+  attr_reader :metadata
+  def initialize(plugin_name)
+    @metadata = {"plugin_name" => plugin_name}
+  end
+end
+
+describe VagrantPlugins::CommandServe::Service::HostService do
+  include_context "unit"
+
+  let(:broker){
+    VagrantPlugins::CommandServe::Broker.new(bind: "bind_addr", ports: ["1234"])
+  }
+
+  let(:machine){ double("machine") }
+
+  let(:statebag_arg){ 
+    Hashicorp::Vagrant::Sdk::FuncSpec::Args.new(
+      args: [
+        Hashicorp::Vagrant::Sdk::FuncSpec::Value.new(
+          name: "", 
+          type: "hashicorp.vagrant.sdk.Args.StateBag", 
+          value: Google::Protobuf::Any.pack(
+            Hashicorp::Vagrant::Sdk::Args::StateBag.new(stream_id: 1, network: "here:101", target: "unix://here"
+        )))
+      ]
+    )
+  }
+
+  subject { described_class.new(broker: broker) }
+
+  before(:each) do
+    parent_test_host = Class.new(Vagrant.plugin("2", :host)) do
+      def detect?(env)
+        true
+      end
+    end
+
+    test_host = Class.new(Vagrant.plugin("2", :host)) do
+      def detect?(env)
+        true
+      end
+    end
+
+    register_plugin do |p|
+      p.host(:parent_test) { parent_test_host }
+      p.host(:test, :parent_test) { test_host }
+    end
+  end
+
+  context "requesting parents" do
+    it "generates a spec" do
+      spec = subject.parents_spec
+      expect(spec).not_to be_nil
+    end
+
+    it "raises an error for unknown plugins" do
+      ctx = DummyContext.new("idontexisthahaha")
+      expect { subject.parents("", ctx) }.to raise_error
+    end
+
+    it "requests parents from plugins" do
+      ctx = DummyContext.new("test")
+      parents = subject.parents("", ctx)
+      expect(parents).not_to be_nil
+      expect(parents.parents).to include("parent_test")
+    end
+  end
+
+  context "requesting detect" do
+    before do
+      test_false_host = Class.new(Vagrant.plugin("2", :host)) do
+        def detect?(env)
+          false
+        end
+      end
+  
+      register_plugin do |p|
+        p.host(:test_false) { test_false_host }
+      end
+
+      VagrantPlugins::CommandServe::Client::Target.any_instance.stub(:project).and_return("")
+      VagrantPlugins::CommandServe::Client::Target.any_instance.stub(:name).and_return("dummy")
+      VagrantPlugins::CommandServe::Client::Target.any_instance.stub(:provider_name).and_return("virtualbox")
+      # Vagrant::Environment.any_instance.stub(:machine).and_return(machine)
+    end
+
+    it "generates a spec" do
+      spec = subject.detect_spec
+      expect(spec).not_to be_nil
+    end
+
+    it "raises an error for unknown plugins" do
+      ctx = DummyContext.new("idontexisthahaha")
+      expect { subject.detect("", ctx) }.to raise_error
+    end
+
+    it "detects true plugins" do
+      ctx = DummyContext.new("test")
+      d = subject.detect(statebag_arg, ctx)
+      expect(d.detected).to be true
+    end
+
+    it "detects false plugins" do
+      ctx = DummyContext.new("test_false")
+      d = subject.detect(statebag_arg, ctx)
+      expect(d.detected).to be false
+    end
+  end
+
+  context "requesting has capability" do
+    before do
+      cap_host = Class.new(Vagrant.plugin("2", :host)) do
+        def detect?(env)
+          true
+        end
+      end
+  
+      register_plugin do |p|
+        p.host(:cap_host) { cap_host }
+        p.host_capability(:cap_host, :mycap) do
+          "this is a capability"
+        end
+      end
+    end
+
+    let(:named_cap_request){ 
+      Hashicorp::Vagrant::Sdk::FuncSpec::Args.new(
+        args: [
+          Hashicorp::Vagrant::Sdk::FuncSpec::Value.new(
+            name: "", 
+            type: "hashicorp.vagrant.sdk.Args.NamedCapability", 
+            value: Google::Protobuf::Any.pack(Hashicorp::Vagrant::Sdk::Args::NamedCapability.new(Capability:"mycap")))
+        ]
+      )
+    }
+
+    let(:named_cap_bad_request){ 
+      Hashicorp::Vagrant::Sdk::FuncSpec::Args.new(
+        args: [
+          Hashicorp::Vagrant::Sdk::FuncSpec::Value.new(
+            name: "", 
+            type: "hashicorp.vagrant.sdk.Args.NamedCapability", 
+            value: Google::Protobuf::Any.pack(Hashicorp::Vagrant::Sdk::Args::NamedCapability.new(Capability:"notacapability")))
+        ]
+      )
+    }
+
+    it "generates a spec" do
+      spec = subject.has_capability_spec
+      expect(spec).not_to be_nil
+    end
+
+    it "raises an error for unknown plugins" do
+      ctx = DummyContext.new("idontexisthahaha")
+      expect { subject.has_capability(test_cap_name, ctx) }.to raise_error
+    end
+
+    it "returns true for plugin with capability" do
+      ctx = DummyContext.new("cap_host")
+      d = subject.has_capability(named_cap_request, ctx)
+      expect(d.has_capability).to be true
+    end
+
+    it "returns false for plugin without capability" do
+      ctx = DummyContext.new("cap_host")
+      d = subject.has_capability(named_cap_bad_request, ctx)
+      expect(d.has_capability).to be false
+    end
+  end
+end