[YUNIKORN-2670] Improve util funtion's test coverage (#888)

Closes: #888

Signed-off-by: Peter Bacsko <pbacsko@cloudera.com>

pkg/common/utils_test.go

@@ -27,6 +27,8 @@ import (
 
 	"gotest.tools/v3/assert"
 
+	"github.com/google/uuid"
+
 	"github.com/apache/yunikorn-scheduler-interface/lib/go/common"
 	"github.com/apache/yunikorn-scheduler-interface/lib/go/si"
 )
@@ -380,3 +382,35 @@ func TestGetConfigurationInt(t *testing.T) {
 		})
 	}
 }
+
+func TestZeroTimeInUnixNano(t *testing.T) {
+	// zero time
+	var nilValue *int64 = nil
+	assert.Equal(t, ZeroTimeInUnixNano(time.Time{}), nilValue)
+
+	// non-zero time
+	date := time.Date(2024, time.June, 6, 0, 0, 0, 0, time.UTC)
+	assert.Equal(t, *ZeroTimeInUnixNano(date), date.UnixNano())
+
+	// time in different timezone
+	date = time.Date(2024, time.June, 6, 0, 0, 0, 0, time.FixedZone("UTC+8", 8*60*60))
+	assert.Equal(t, *ZeroTimeInUnixNano(date), date.UnixNano())
+}
+
+func TestGetNewUUID(t *testing.T) {
+	newUUID := GetNewUUID()
+	if _, err := uuid.Parse(newUUID); err != nil {
+		t.Errorf("Generated UUID is not valid: %s", newUUID)
+	}
+}
+
+func TestIsRecoveryQueue(t *testing.T) {
+	// valid case
+	assert.Assert(t, IsRecoveryQueue("root.@recovery@"))
+	assert.Assert(t, IsRecoveryQueue("ROOT.@RECOVERY@"))
+	assert.Assert(t, IsRecoveryQueue("RoOT.@rECoVeRY@"))
+
+	// invalid case
+	assert.Assert(t, !IsRecoveryQueue("otherQueue"))
+	assert.Assert(t, !IsRecoveryQueue(""))
+}