TUN-3593: /ready endpoint for k8s readiness. Move tunnel events out of UI package, into connection package.

metrics/readiness_test.go

@@ -0,0 +1,58 @@
+package metrics
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestReadyServer_makeResponse(t *testing.T) {
+	type fields struct {
+		isConnected map[int]bool
+	}
+	tests := []struct {
+		name                 string
+		fields               fields
+		wantOK               bool
+		wantReadyConnections int
+	}{
+		{
+			name: "One connection online => HTTP 200",
+			fields: fields{
+				isConnected: map[int]bool{
+					0: false,
+					1: false,
+					2: true,
+					3: false,
+				},
+			},
+			wantOK:               true,
+			wantReadyConnections: 1,
+		},
+		{
+			name: "No connections online => no HTTP 200",
+			fields: fields{
+				isConnected: map[int]bool{
+					0: false,
+					1: false,
+					2: false,
+					3: false,
+				},
+			},
+			wantReadyConnections: 0,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			rs := &ReadyServer{
+				isConnected: tt.fields.isConnected,
+			}
+			gotStatusCode, gotReadyConnections := rs.makeResponse()
+			if tt.wantOK && gotStatusCode != http.StatusOK {
+				t.Errorf("ReadyServer.makeResponse() gotStatusCode = %v, want ok = %v", gotStatusCode, tt.wantOK)
+			}
+			if gotReadyConnections != tt.wantReadyConnections {
+				t.Errorf("ReadyServer.makeResponse() gotReadyConnections = %v, want %v", gotReadyConnections, tt.wantReadyConnections)
+			}
+		})
+	}
+}