add unittest for RandString

Signed-off-by: yxxhero <[email protected]>
dragonflyoss · Aug 31, 2021 · cdda432 · cdda432
1 parent 41af67f
commit cdda432
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Showing 2 changed files with 8 additions and 1 deletion.
diff --git a/pkg/util/stringutils/string_utils.go b/pkg/util/stringutils/string_utils.go
@@ -69,7 +69,7 @@ func Contains(slice []string, ele string) bool {
 }
 
 func RandString(len int) string {
-	r := rand.New(rand.NewSource(time.Now().Unix()))
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
 	bytes := make([]byte, len)
 	for i := 0; i < len; i++ {
 		b := r.Intn(26) + 65

diff --git a/pkg/util/stringutils/string_utils_test.go b/pkg/util/stringutils/string_utils_test.go
@@ -50,3 +50,10 @@ func TestContains(t *testing.T) {
 	assert.True(t, ContainsFold([]string{"a", "B"}, "b"))
 	assert.False(t, Contains([]string{"a", "B"}, "b"))
 }
+
+func TestRandString(t *testing.T) {
+	assert.True(t, len(RandString(10)) == 10)
+	x := RandString(10)
+	y := RandString(10)
+	assert.False(t, x == y)
+}