Update test spec to reflect new flag format in expected result

manifests/nginx_prometheus_exporter.pp

@@ -97,7 +97,11 @@
     default => undef,
   }
 
-  $options = "--nginx.scrape-uri '${scrape_uri}' ${extra_options}"
+  if versioncmp($version, '1.0.0') >= 0 {
+    $options = "--nginx.scrape-uri '${scrape_uri}' ${extra_options}"
+  } else {
+    $options = "-nginx.scrape-uri '${scrape_uri}' ${extra_options}"
+  }
 
   $extract_path = "/opt/${package_name}-${version}.${os}-${arch}"
   $archive_bin_path = "${extract_path}/${bin_name}"

spec/acceptance/nginx_prometheus_exporter_spec.rb

@@ -36,16 +36,26 @@ class { 'prometheus::nginx_prometheus_exporter':
     describe port(9113) do
       it { is_expected.to be_listening.with('tcp6') }
     end
+
     # the describe process uses `ps -C` which truncates the cmd output to 15 characters on newer versions.
+    describe process('nginx-prometheu') do
+      its(:args) { is_expected.to match %r{\ -nginx.scrape-uri http://localhost:8888/stub_status} }
+    end
+  end
+
+  describe 'update to version >= 1.0.0' do
+    it 'uses double-dash arguments for version >= 1.0.0' do
+      pp = <<-EOS
+      class { 'prometheus::nginx_prometheus_exporter':
+        scrape_uri => 'http://localhost:8888/stub_status',
+        version    => '1.2.0',
+      }
+      EOS
+      apply_manifest(pp, catch_failures: true)
+    end
 
-    if os == 'centos-7-x86_64'
-      describe process('nginx-prometheus-exporter') do
-        its(:args) { is_expected.to match %r{\ -nginx.scrape-uri http://localhost:8888/stub_status} }
-      end
-    else
-      describe process('nginx-prometheu') do
-        its(:args) { is_expected.to match %r{\ -nginx.scrape-uri http://localhost:8888/stub_status} }
-      end
+    describe process('nginx-prometheu') do
+      its(:args) { is_expected.to match %r{\ --nginx.scrape-uri http://localhost:8888/stub_status} }
     end
   end
 end

spec/classes/nginx_prometheus_exporter_spec.rb

@@ -33,7 +33,7 @@
           it { is_expected.to contain_class('prometheus') }
           it { is_expected.to contain_group('nginx-prometheus-exporter') }
           it { is_expected.to contain_user('nginx-prometheus-exporter') }
-          it { is_expected.to contain_prometheus__daemon('nginx_prometheus_exporter').with('options' => "-nginx.scrape-uri 'http://localhost:8080/stub_status' ") }
+          it { is_expected.to contain_prometheus__daemon('nginx_prometheus_exporter').with('options' => "--nginx.scrape-uri 'http://localhost:8080/stub_status' ") }
           it { is_expected.to contain_service('nginx_prometheus_exporter') }
         end
 
@@ -61,7 +61,7 @@
           it { is_expected.to contain_class('prometheus') }
           it { is_expected.to contain_group('nginx-prometheus-exporter') }
           it { is_expected.to contain_user('nginx-prometheus-exporter') }
-          it { is_expected.to contain_prometheus__daemon('nginx_prometheus_exporter').with('options' => "-nginx.scrape-uri 'http://127.0.0.1/stub_status' -test") }
+          it { is_expected.to contain_prometheus__daemon('nginx_prometheus_exporter').with('options' => "--nginx.scrape-uri 'http://127.0.0.1/stub_status' -test") }
           it { is_expected.to contain_service('nginx_prometheus_exporter') }
         end