1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "utils/checksum.h"
18 #include "gtest/gtest.h"
19
20 namespace libtextclassifier3 {
21 namespace {
22
TEST(LuhnTest,CorrectlyHandlesSimpleCases)23 TEST(LuhnTest, CorrectlyHandlesSimpleCases) {
24 EXPECT_TRUE(VerifyLuhnChecksum("3782 8224 6310 005"));
25 EXPECT_FALSE(VerifyLuhnChecksum("0"));
26 EXPECT_FALSE(VerifyLuhnChecksum("1"));
27 EXPECT_FALSE(VerifyLuhnChecksum("0A"));
28 }
29
TEST(LuhnTest,CorrectlyVerifiesPaymentCardNumbers)30 TEST(LuhnTest, CorrectlyVerifiesPaymentCardNumbers) {
31 // Fake test numbers.
32 EXPECT_TRUE(VerifyLuhnChecksum("3782 8224 6310 005"));
33 EXPECT_TRUE(VerifyLuhnChecksum("371449635398431"));
34 EXPECT_TRUE(VerifyLuhnChecksum("5610591081018250"));
35 EXPECT_TRUE(VerifyLuhnChecksum("38520000023237"));
36 EXPECT_TRUE(VerifyLuhnChecksum("6011000990139424"));
37 EXPECT_TRUE(VerifyLuhnChecksum("3566002020360505"));
38 EXPECT_TRUE(VerifyLuhnChecksum("5105105105105100"));
39 EXPECT_TRUE(VerifyLuhnChecksum("4012 8888 8888 1881"));
40 }
41
TEST(LuhnTest,HandlesWhitespace)42 TEST(LuhnTest, HandlesWhitespace) {
43 EXPECT_TRUE(
44 VerifyLuhnChecksum("3782 8224 6310 005 ", /*ignore_whitespace=*/true));
45 EXPECT_FALSE(
46 VerifyLuhnChecksum("3782 8224 6310 005 ", /*ignore_whitespace=*/false));
47 }
48
TEST(LuhnTest,HandlesEdgeCases)49 TEST(LuhnTest, HandlesEdgeCases) {
50 EXPECT_FALSE(VerifyLuhnChecksum(" ", /*ignore_whitespace=*/true));
51 EXPECT_FALSE(VerifyLuhnChecksum(" ", /*ignore_whitespace=*/false));
52 EXPECT_FALSE(VerifyLuhnChecksum("", /*ignore_whitespace=*/true));
53 EXPECT_FALSE(VerifyLuhnChecksum("", /*ignore_whitespace=*/false));
54 }
55
56 } // namespace
57 } // namespace libtextclassifier3
58