[#1693] internal/assert: Add False and NoError checks

Change-Id: Ib3ab1671eeff8e8917673513477f158cadbb4287
Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>

internal/assert/cond.go

@@ -1,9 +1,25 @@
 package assert
 
-import "strings"
+import (
+	"fmt"
+	"strings"
+)
 
 func True(cond bool, details ...string) {
 	if !cond {
 		panic(strings.Join(details, " "))
 	}
 }
+
+func False(cond bool, details ...string) {
+	if cond {
+		panic(strings.Join(details, " "))
+	}
+}
+
+func NoError(err error, details ...string) {
+	if err != nil {
+		content := fmt.Sprintf("BUG: %v: %s", err, strings.Join(details, " "))
+		panic(content)
+	}
+}