func TestHandleVarz(t *testing.T) {
for _, tc := range handleVarzTests {
ms := metrics.Store{}
for _, metric := range tc.metrics {
ms.Add(metric)
}
o := Options{&ms, "gunstar"}
e, err := New(o)
if err != nil {
t.Fatalf("couldn't make exporter: %s", err)
}
response := httptest.NewRecorder()
e.HandleVarz(response, &http.Request{})
if response.Code != 200 {
t.Errorf("test case %s: response code not 200: %d", tc.name, response.Code)
}
b, err := ioutil.ReadAll(response.Body)
if err != nil {
t.Errorf("test case %s: failed to read response: %s", tc.name, err)
}
diff := pretty.Compare(string(b), tc.expected)
if len(diff) > 0 {
t.Errorf("test case %s: response not expected:\n%s", tc.name, diff)
}
}
}
func TestMetricToCollectd(t *testing.T) {
ts, terr := time.Parse("2006/01/02 15:04:05", "2012/07/24 10:14:00")
if terr != nil {
t.Errorf("time parse error: %s", terr)
}
ms := metrics.Store{}
scalarMetric := metrics.NewMetric("foo", "prog", metrics.Counter)
d, _ := scalarMetric.GetDatum()
d.Set(37, ts)
ms.Add(scalarMetric)
r := FakeSocketWrite(metricToCollectd, scalarMetric)
expected := []string{"PUTVAL \"gunstar/mtail-prog/counter-foo\" interval=60 1343124840:37\n"}
diff := pretty.Compare(r, expected)
if len(diff) > 0 {
t.Errorf("String didn't match:\n%s", diff)
}
dimensionedMetric := metrics.NewMetric("bar", "prog", metrics.Gauge, "label")
d, _ = dimensionedMetric.GetDatum("quux")
d.Set(37, ts)
d, _ = dimensionedMetric.GetDatum("snuh")
d.Set(37, ts)
ms.ClearMetrics()
ms.Add(dimensionedMetric)
r = FakeSocketWrite(metricToCollectd, dimensionedMetric)
expected = []string{
"PUTVAL \"gunstar/mtail-prog/gauge-bar-label-quux\" interval=60 1343124840:37\n",
"PUTVAL \"gunstar/mtail-prog/gauge-bar-label-snuh\" interval=60 1343124840:37\n"}
diff = pretty.Compare(r, expected)
if len(diff) > 0 {
t.Errorf("String didn't match:\n%s", diff)
}
}