Add moonraker service tests

Author: Floppy

app/services/print/moonraker_service.rb

@@ -20,7 +20,9 @@ def ok?
 
   def upload(file:, start_print: true)
     raise ArgumentError unless file.mime_type.to_sym == :gcode
-    connection.post(upload_uri, payload(file: file, start_print: start_print), headers)
+    raise PrintHost::NotReady unless ok?
+    response = connection.post(upload_uri, payload(file: file, start_print: start_print), headers)
+    response.success?
   end
 
   private

spec/cassettes/Print_MoonrakerService/with_bad_API_key/doesn_t_upload_file.yml

@@ -0,0 +1,55 @@
+require "rails_helper"
+
+RSpec.describe Print::MoonrakerService, :after_first_run, :vcr do
+  let(:endpoint) { ENV.fetch("MOONRAKER_ENDPOINT", "http://klipper.example.com") }
+  let(:credentials) { ENV.fetch("MOONRAKER_API_KEY", "fake_api_key") }
+  let(:print_host) {
+    create :print_host,
+      protocol: "moonraker",
+      name: "Moonraker",
+      endpoint: endpoint,
+      credentials: credentials
+  }
+  let(:file) { create :model_file, filename: "test.gcode" }
+
+  before do
+    VCR.configure do |c|
+      c.filter_sensitive_data("<API_KEY>") { credentials }
+      c.filter_sensitive_data("<ENDPOINT>") { endpoint }
+    end
+  end
+
+  context "with good connection details" do
+    it "verifies connection" do
+      expect(print_host.service.ok?).to be true
+    end
+
+    it "uploads a file" do
+      expect(print_host.service.upload(file: file, start_print: true)).to be true
+    end
+  end
+
+  context "with bad API key" do
+    let(:credentials) { "bad_api_key" }
+
+    it "flags connection error" do
+      expect(print_host.service.ok?).to be false
+    end
+
+    it "doesn't upload file" do
+      expect{ print_host.service.upload(file: file, start_print: true)}.to raise_error(PrintHost::NotReady)
+    end
+  end
+
+  context "with bad endpoint" do
+    let(:endpoint) { "http://dev.null.local" }
+
+    it "flags connection error" do
+      expect(print_host.service.ok?).to be false
+    end
+
+    it "doesn't upload file" do
+      expect{ print_host.service.upload(file: file, start_print: true)}.to raise_error(PrintHost::NotReady)
+    end
+  end
+end