Implement phase 1 foundations

internal/loki/client_test.go

@@ -0,0 +1,42 @@
+package loki
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestLabelsValuesAndQueryRange(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/loki/api/v1/labels":
+			_, _ = w.Write([]byte(`{"status":"success","data":["service","container"]}`))
+		case "/loki/api/v1/label/service/values":
+			_, _ = w.Write([]byte(`{"status":"success","data":["api"]}`))
+		case "/loki/api/v1/query_range":
+			if !strings.Contains(r.URL.Query().Get("query"), "api") {
+				t.Fatalf("query not passed through: %s", r.URL.RawQuery)
+			}
+			_, _ = w.Write([]byte(`{"status":"success","data":{"result":[{"stream":{"service":"api"},"values":[["1700000000000000000","error token=secret"]]}]}}`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer ts.Close()
+
+	client := New(ts.URL, "", "", "")
+	labels, err := client.Labels(t.Context())
+	if err != nil || len(labels) != 2 {
+		t.Fatalf("labels=%v err=%v", labels, err)
+	}
+	values, err := client.LabelValues(t.Context(), "service")
+	if err != nil || values[0] != "api" {
+		t.Fatalf("values=%v err=%v", values, err)
+	}
+	result, err := client.QueryRange(t.Context(), `{service="api"}`, time.Minute, 10)
+	if err != nil || result.Count != 1 {
+		t.Fatalf("result=%#v err=%v", result, err)
+	}
+}