randomize db name for rest test to avoid conflicts in parallel testing

backend/app/rest/api/migrator_test.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"math/rand"
 	"mime/multipart"
 	"net/http"
 	"net/http/httptest"
@@ -243,6 +244,7 @@ func waitForImportCompletion(t *testing.T, ts *httptest.Server) {
 }
 
 func prepImportSrv(t *testing.T) (ts *httptest.Server, teardown func()) {
+	testDb := fmt.Sprintf("/tmp/test-remark-import-%d.db", rand.Int31())
 	b, err := engine.NewBoltDB(bolt.Options{}, engine.BoltSite{FileName: testDb, SiteID: "radio-t"})
 	require.Nil(t, err)
 	adminStore := adminstore.NewStaticStore("123456", []string{"a1", "a2"}, "admin@remark-42.com")

backend/app/rest/api/rest_test.go

@@ -4,7 +4,9 @@ import (
 	"bytes"
 	"crypto/tls"
 	"encoding/json"
+	"fmt"
 	"io/ioutil"
+	"math/rand"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -29,7 +31,6 @@ import (
 	"github.com/umputun/remark/backend/app/store/service"
 )
 
-var testDb = "/tmp/test-remark.db"
 var testHTML = "/tmp/test-remark.html"
 var getStartedHTML = "/tmp/getstarted.html"
 
@@ -177,6 +178,7 @@ func TestRest_RunAutocertModeHTTPOnly(t *testing.T) {
 
 func startupT(t *testing.T) (ts *httptest.Server, srv *Rest, teardown func()) {
 
+	testDb := fmt.Sprintf("/tmp/test-remark-%d.db", rand.Int31())
 	os.Remove(testDb)
 	os.Remove(testHTML)
 	os.RemoveAll("/tmp/ava-remark42")