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/regex-match.h"
18
19 #include <memory>
20
21 #include "utils/utf8/unilib.h"
22 #include "gmock/gmock.h"
23 #include "gtest/gtest.h"
24
25 namespace libtextclassifier3 {
26 namespace {
27
28 class LuaVerifierTest : public testing::Test {
29 protected:
LuaVerifierTest()30 LuaVerifierTest() : INIT_UNILIB_FOR_TESTING(unilib_) {}
31 UniLib unilib_;
32 };
33
34 #ifdef TC3_UNILIB_ICU
TEST_F(LuaVerifierTest,HandlesSimpleVerification)35 TEST_F(LuaVerifierTest, HandlesSimpleVerification) {
36 EXPECT_TRUE(VerifyMatch(/*context=*/"", /*matcher=*/nullptr, "return true;"));
37 }
38
TEST_F(LuaVerifierTest,HandlesCustomVerification)39 TEST_F(LuaVerifierTest, HandlesCustomVerification) {
40 UnicodeText pattern = UTF8ToUnicodeText("(\\d{16})",
41 /*do_copy=*/true);
42 UnicodeText message = UTF8ToUnicodeText("cc: 4012888888881881",
43 /*do_copy=*/true);
44 const std::string verifier = R"(
45 function luhn(candidate)
46 local sum = 0
47 local num_digits = string.len(candidate)
48 local parity = num_digits % 2
49 for pos = 1,num_digits do
50 d = tonumber(string.sub(candidate, pos, pos))
51 if pos % 2 ~= parity then
52 d = d * 2
53 end
54 if d > 9 then
55 d = d - 9
56 end
57 sum = sum + d
58 end
59 return (sum % 10) == 0
60 end
61 return luhn(match[1].text);
62 )";
63 auto regex_pattern = unilib_.CreateRegexPattern(pattern);
64 ASSERT_TRUE(regex_pattern != nullptr);
65 auto matcher = regex_pattern->Matcher(message);
66 ASSERT_TRUE(matcher != nullptr);
67 int status = UniLib::RegexMatcher::kNoError;
68 ASSERT_TRUE(matcher->Find(&status) &&
69 status == UniLib::RegexMatcher::kNoError);
70
71 EXPECT_TRUE(VerifyMatch(message.ToUTF8String(), matcher.get(), verifier));
72 }
73 #endif
74
75 } // namespace
76 } // namespace libtextclassifier3
77