1 /* Copyright 2021 The TensorFlow Authors. All Rights Reserved.
2
3 Licensed under the Apache License, Version 2.0 (the "License");
4 you may not use this file except in compliance with the License.
5 You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9 Unless required by applicable law or agreed to in writing, software
10 distributed under the License is distributed on an "AS IS" BASIS,
11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 See the License for the specific language governing permissions and
13 limitations under the License.
14 ==============================================================================*/
15
16 #include "tensorflow/lite/delegates/flex/training/training_delegate.h"
17
18 #include <cstdint>
19 #include <thread> // NOLINT(build/c++11)
20 #include <vector>
21
22 #include <gmock/gmock.h>
23 #include <gtest/gtest.h>
24 #include "tensorflow/lite/delegates/flex/test_util.h"
25 #include "tensorflow/lite/shared_library.h"
26
27 namespace tflite {
28 namespace flex {
29 namespace testing {
30
31 using ::testing::ElementsAre;
32
33 class TrainingDelegateTest : public testing::FlexModelTest {
34 protected:
SetUp()35 void SetUp() override {
36 delegate_ = absl::make_unique<TrainingFlexDelegate>();
37 interpreter_ = absl::make_unique<Interpreter>(&error_reporter_);
38 interpreter_->SetCancellationFunction(delegate_.get(),
39 TrainingFlexDelegate::ShouldCancel);
40 }
41
TearDown()42 void TearDown() override {
43 // The delegate needs to be destructed after the interpreter because the
44 // interpreter references data contained in the delegate.
45 interpreter_.reset();
46 delegate_.reset();
47 }
48
49 public:
TrainingDelegateTest()50 TrainingDelegateTest() : delegate_(nullptr) {}
51
ConfigureDelegate()52 void ConfigureDelegate() {
53 ASSERT_EQ(
54 interpreter_->ModifyGraphWithDelegate(delegate_->GetTfLiteDelegate()),
55 kTfLiteOk);
56 }
57
Cancel()58 void Cancel() { delegate_->Cancel(); }
59
60 private:
61 std::unique_ptr<TrainingFlexDelegate> delegate_;
62 };
63
TEST_F(TrainingDelegateTest,TestFullGraph)64 TEST_F(TrainingDelegateTest, TestFullGraph) {
65 AddTensors(3, {0, 1}, {2}, kTfLiteInt32, {2});
66
67 AddTfOp(testing::kAdd, {0, 1}, {2});
68
69 ConfigureDelegate();
70
71 SetShape(0, {2, 2});
72 SetTypedValues<int>(0, {1, 2, 3, 4});
73 SetShape(1, {2, 2});
74 SetTypedValues<int>(1, {4, 3, 2, 1});
75
76 ASSERT_TRUE(Invoke());
77
78 ASSERT_THAT(GetShape(2), ElementsAre(2, 2));
79 ASSERT_THAT(GetTypedValues<int>(2), ElementsAre(5, 5, 5, 5));
80 ASSERT_EQ(GetType(2), kTfLiteInt32);
81 }
82
TEST_F(TrainingDelegateTest,TestCancellation1)83 TEST_F(TrainingDelegateTest, TestCancellation1) {
84 AddTensors(3, {0, 1}, {2}, kTfLiteInt32, {2});
85
86 AddTfOp(testing::kAdd, {0, 1}, {2});
87
88 ConfigureDelegate();
89
90 SetShape(0, {2, 2});
91 SetTypedValues<int>(0, {1, 2, 3, 4});
92 SetShape(1, {2, 2});
93 SetTypedValues<int>(1, {4, 3, 2, 1});
94
95 ASSERT_TRUE(Invoke());
96
97 ASSERT_THAT(GetShape(2), ElementsAre(2, 2));
98 ASSERT_THAT(GetTypedValues<int>(2), ElementsAre(5, 5, 5, 5));
99 ASSERT_EQ(GetType(2), kTfLiteInt32);
100
101 Cancel();
102 // Op should be cancelled.
103 ASSERT_FALSE(Invoke());
104 }
105
TEST_F(TrainingDelegateTest,TestCancellation2)106 TEST_F(TrainingDelegateTest, TestCancellation2) {
107 // Define the graph.
108 AddTensors(2, {0}, {1}, kTfLiteBool, {1});
109
110 // We need an op that checks the CancellationManager status.
111 AddTfOp(testing::kLoopCond, {0}, {1});
112
113 // Apply the delegate.
114 ConfigureDelegate();
115
116 // Define inputs.
117 SetShape(0, {1});
118
119 ASSERT_TRUE(Invoke());
120
121 Cancel();
122 // Op should be cancelled.
123 ASSERT_FALSE(Invoke());
124 }
125
TEST_F(TrainingDelegateTest,TestCancellationTwoThreads)126 TEST_F(TrainingDelegateTest, TestCancellationTwoThreads) {
127 AddTensors(3, {0, 1}, {2}, kTfLiteInt32, {2});
128
129 AddTfOp(testing::kAdd, {0, 1}, {2});
130
131 ConfigureDelegate();
132
133 SetShape(0, {2, 2});
134 SetTypedValues<int>(0, {1, 2, 3, 4});
135 SetShape(1, {2, 2});
136 SetTypedValues<int>(1, {4, 3, 2, 1});
137
138 std::thread invoke_thread([this]() {
139 bool result = true;
140 result = this->Invoke();
141 std::this_thread::sleep_for(std::chrono::milliseconds(1000));
142 result = this->Invoke();
143 ASSERT_FALSE(result);
144 });
145
146 std::thread cancel_thread([this]() { this->Cancel(); });
147
148 invoke_thread.join();
149 cancel_thread.join();
150 }
151
152 // TODO(b/179048124): Add test case with ReduceDataset op.
153 // TODO(b/179048124): Add integration test with real models.
154 // TODO(b/179048124): Add proper test with multiple threads.
155
156 } // namespace testing
157 } // namespace flex
158 } // namespace tflite
159