Test toGoStrings round trip

core_test.go

@@ -2288,3 +2288,17 @@ func TestColRowRange(t *testing.T) {
 		t.Errorf("TestColRowRange incorrect submatCols count: %v\n", submatCols.Cols())
 	}
 }
+
+func Test_toGoStrings(t *testing.T) {
+	goStrings := []string{"foo", "bar"}
+	cStrings := toCStrings(goStrings)
+	result := toGoStrings(cStrings)
+	if len(goStrings) != len(result) {
+		t.Errorf("TesttoGoStrings failed: length of converted string is not equal to original \n")
+	}
+	for i, s := range goStrings {
+		if s != result[i] {
+			t.Errorf("TesttoGoStrings failed: strings are not equal. expected=%s, actusal=%s", s, result[i])
+		}
+	}
+}

objdetect_test.go

@@ -191,6 +191,13 @@ func TestQRCodeDetector(t *testing.T) {
 			t.Errorf("Error in TestQRCodeDetector Multi test: decoded straight QR code=%s, decoded[%d] =%s", tmpDecoded, i, s)
 		}
 	}
+
+	emptyMat := NewMatWithSize(100, 200, MatTypeCV8UC3)
+	success = detector.DetectAndDecodeMulti(emptyMat, &decoded, &multiBox2, &qrCodes)
+	if success {
+		t.Errorf("Error in TestQRCodeDetector Multi test: empty Mat returned sucess=true")
+	}
+	emptyMat.Close()
 }
 
 func padQr(qr *Mat) Mat {