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/grammar/analyzer.h"
18
19 #include "utils/grammar/testing/utils.h"
20 #include "utils/grammar/types.h"
21 #include "utils/grammar/utils/rules.h"
22 #include "utils/utf8/unicodetext.h"
23 #include "gmock/gmock.h"
24 #include "gtest/gtest.h"
25
26 namespace libtextclassifier3::grammar {
27 namespace {
28
29 using ::testing::SizeIs;
30
31 class AnalyzerTest : public GrammarTest {};
32
TEST_F(AnalyzerTest,ParsesTextWithGrammar)33 TEST_F(AnalyzerTest, ParsesTextWithGrammar) {
34 RulesSetT model;
35
36 // Add semantic values schema.
37 model.semantic_values_schema.assign(semantic_values_schema_.buffer().begin(),
38 semantic_values_schema_.buffer().end());
39
40 // Define rules and semantics.
41 grammar::LocaleShardMap locale_shard_map =
42 grammar::LocaleShardMap::CreateLocaleShardMap({""});
43 Rules rules(locale_shard_map);
44 rules.Add("<month>", {"january"},
45 static_cast<CallbackId>(DefaultCallback::kSemanticExpression),
46 /*callback_param=*/model.semantic_expression.size());
47 model.semantic_expression.push_back(CreatePrimitiveConstExpression(1));
48
49 rules.Add("<month>", {"february"},
50 static_cast<CallbackId>(DefaultCallback::kSemanticExpression),
51 /*callback_param=*/model.semantic_expression.size());
52 model.semantic_expression.push_back(CreatePrimitiveConstExpression(2));
53
54 const int kMonth = 0;
55 rules.Add("<month_rule>", {"<month>"},
56 static_cast<CallbackId>(DefaultCallback::kRootRule), kMonth);
57 rules.Finalize().Serialize(/*include_debug_information=*/false, &model);
58 const std::string model_buffer = PackFlatbuffer<RulesSet>(&model);
59
60 Analyzer analyzer(unilib_.get(),
61 flatbuffers::GetRoot<RulesSet>(model_buffer.data()));
62
63 {
64 auto maybe_results = analyzer.Parse(
65 UTF8ToUnicodeText("The month is January 2020", /*do_copy=*/false),
66 /*locales=*/{}, &arena_);
67 EXPECT_TRUE(maybe_results.ok());
68
69 const std::vector<EvaluatedDerivation> results = maybe_results.ValueOrDie();
70 EXPECT_THAT(results, SizeIs(1));
71
72 // Check parse tree.
73 EXPECT_THAT(results[0], IsDerivation(kMonth /* rule_id */, 13 /* begin */,
74 20 /* end */));
75
76 // Check semantic result.
77 EXPECT_EQ(results[0].value->Value<int32>(), 1);
78 }
79
80 {
81 auto maybe_results =
82 analyzer.Parse(UTF8ToUnicodeText("february", /*do_copy=*/false),
83 /*locales=*/{}, &arena_);
84 EXPECT_TRUE(maybe_results.ok());
85
86 const std::vector<EvaluatedDerivation> results = maybe_results.ValueOrDie();
87 EXPECT_THAT(results, SizeIs(1));
88
89 // Check parse tree.
90 EXPECT_THAT(results[0],
91 IsDerivation(kMonth /* rule_id */, 0 /* begin */, 8 /* end */));
92
93 // Check semantic result.
94 EXPECT_EQ(results[0].value->Value<int32>(), 2);
95 }
96 }
97
98 } // namespace
99 } // namespace libtextclassifier3::grammar
100