test: Add new units tests to improve coverage

* Remove -race flag from build args as it can have large impact on perf

Signed-off-by: Mahendra Paipuri <mahendra.paipuri@gmail.com>

.promu-cgo.yml

@@ -13,7 +13,7 @@ build:
           path: ./cmd/ceems_lb
     tags:
       all: [osusergo, netgo, static_build]
-    flags: -a -race
+    flags: -a
     ldflags: |
         -X github.com/prometheus/common/version.Version={{.Version}}
         -X github.com/prometheus/common/version.Revision={{.Revision}}

pkg/api/cli/cli_test.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"syscall"
 	"testing"
 	"time"
 
@@ -104,7 +105,8 @@ func TestCEEMSServerMain(t *testing.T) {
 ---
 ceems_api_server:
   data:
-    path: %s`
+    path: %[1]s
+    backup_path: %[1]s`
 
 	configFile := fmt.Sprintf(configFileTmpl, dataDir)
 	configFilePath := makeConfigFile(configFile, tmpDir)
@@ -131,4 +133,8 @@ ceems_api_server:
 			t.Errorf("Could not start stats server after %d attempts", i)
 		}
 	}
+
+	// Send INT signal and wait a second to clean up server and DB
+	syscall.Kill(syscall.Getpid(), syscall.SIGINT)
+	time.Sleep(1 * time.Second)
 }