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/semantics/evaluators/constituent-eval.h"
18
19 #include "utils/flatbuffers/flatbuffers.h"
20 #include "utils/grammar/semantics/eval-context.h"
21 #include "utils/grammar/semantics/expression_generated.h"
22 #include "utils/grammar/testing/utils.h"
23 #include "utils/grammar/testing/value_generated.h"
24 #include "gmock/gmock.h"
25 #include "gtest/gtest.h"
26 #include "flatbuffers/flatbuffers.h"
27
28 namespace libtextclassifier3::grammar {
29 namespace {
30
31 class ConstituentEvaluatorTest : public GrammarTest {
32 protected:
ConstituentEvaluatorTest()33 explicit ConstituentEvaluatorTest() {}
34
CreateConstituentExpression(const int id)35 OwnedFlatbuffer<SemanticExpression> CreateConstituentExpression(
36 const int id) {
37 ConstituentExpressionT constituent_expression;
38 constituent_expression.id = id;
39 return CreateExpression(constituent_expression);
40 }
41
42 const ConstituentEvaluator constituent_eval_;
43 };
44
TEST_F(ConstituentEvaluatorTest,HandlesNotDefinedConstituents)45 TEST_F(ConstituentEvaluatorTest, HandlesNotDefinedConstituents) {
46 OwnedFlatbuffer<SemanticExpression> expression =
47 CreateConstituentExpression(/*id=*/42);
48
49 StatusOr<const SemanticValue*> result = constituent_eval_.Apply(
50 /*context=*/{}, expression.get(), /*arena=*/nullptr);
51
52 EXPECT_TRUE(result.ok());
53 EXPECT_EQ(result.ValueOrDie(), nullptr);
54 }
55
TEST_F(ConstituentEvaluatorTest,ForwardsConstituentSemanticValues)56 TEST_F(ConstituentEvaluatorTest, ForwardsConstituentSemanticValues) {
57 // Create example values for constituents.
58 EvalContext context;
59 TestValueT value_0;
60 value_0.test_string = "constituent 0 value";
61 context.rule_constituents[0] = CreateSemanticValue(value_0);
62
63 TestValueT value_42;
64 value_42.test_string = "constituent 42 value";
65 context.rule_constituents[42] = CreateSemanticValue(value_42);
66
67 OwnedFlatbuffer<SemanticExpression> expression =
68 CreateConstituentExpression(/*id=*/42);
69
70 StatusOr<const SemanticValue*> result =
71 constituent_eval_.Apply(context, expression.get(), /*arena=*/nullptr);
72
73 EXPECT_TRUE(result.ok());
74 const TestValue* result_value = result.ValueOrDie()->Table<TestValue>();
75 EXPECT_EQ(result_value->test_string()->str(), "constituent 42 value");
76 }
77
78 } // namespace
79 } // namespace libtextclassifier3::grammar
80