unit_tests/tests/util/test_buffered_writer.cpp

Directory:	./
File:	unit_tests/tests/util/test_buffered_writer.cpp
Date:	2025-10-24 14:26:41

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Lines:	100.0%	56	0	56
Functions:	100.0%	22	0	22
Branches:	65.1%	114	0	175
Decisions:	-%	0	-	0

  
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      #include "pch.h"
    
      #include "buffered_writer.h"
    
      using ::testing::_;
    
      using ::testing::Return;
    
      using ::testing::StrictMock;
    
      template <int TBufferSize>
    
      struct MockBufferedWriter : public BufferedWriter<TBufferSize>
    
      {
    
        6/6MockBufferedWriter<50>::gmock_writeInternal(testing::Matcher<char const*> const&, testing::Matcher<unsigned long> const&):
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      14
      	MOCK_METHOD(size_t, writeInternal, (const char*, size_t), (override));
    
      };
    
      static const char* testBuffer = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    
      4
      TEST(BufferedWriter, WriteSmall) {
    
      	// No calls to dut expected
    
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      	StrictMock<MockBufferedWriter<10>> dut;
    
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      	EXPECT_EQ(0u, dut.write(testBuffer, 5));
    
      2
      }
    
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      TEST(BufferedWriter, WriteSmallFlush) {
    
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      	StrictMock<MockBufferedWriter<10>> dut;
    
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      	EXPECT_CALL(dut, writeInternal(_, 5)).WillOnce(Return(5));
    
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      	ASSERT_EQ(0u, dut.write(testBuffer, 5));
    
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      	EXPECT_EQ(dut.flush(), 5u);
    
      1
      }
    
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      TEST(BufferedWriter, WriteMultipleSmall) {
    
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      	StrictMock<MockBufferedWriter<10>> dut;
    
      	{
    
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      		EXPECT_CALL(dut, writeInternal(_, 10)).WillOnce(Return(10));
    
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      		EXPECT_CALL(dut, writeInternal(_, 2)).WillOnce(Return(2));
    
      	}
    
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      	EXPECT_EQ(0u, dut.write(testBuffer, 3));
    
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      	EXPECT_EQ(0u, dut.write(testBuffer, 3));
    
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      	EXPECT_EQ(0u, dut.write(testBuffer, 3));
    
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      	EXPECT_EQ(10u, dut.write(testBuffer, 3));	// <- this one should trigger a flush
    
      	// Flush the remainder
    
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      	EXPECT_EQ(dut.flush(), 2u);
    
      2
      }
    
      4
      TEST(BufferedWriter, WriteSingleFullBufferSize) {
    
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      	StrictMock<MockBufferedWriter<50>> dut;
    
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      	EXPECT_CALL(dut, writeInternal(_, 50)).WillOnce(Return(50));
    
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      	EXPECT_EQ(50u, dut.write(testBuffer, 50));
    
      	// Nothing left to flush!
    
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      	EXPECT_EQ(0u, dut.flush());
    
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      }
    
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      TEST(BufferedWriter, WriteLarge) {
    
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      	StrictMock<MockBufferedWriter<10>> dut;
    
      	{
    
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      		EXPECT_CALL(dut, writeInternal(_, 45)).WillOnce(Return(45));
    
      	}
    
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      	EXPECT_EQ(45u, dut.write(testBuffer, 45));
    
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      	EXPECT_EQ(0u, dut.flush());
    
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      }
    
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      TEST(BufferedWriter, WriteLargeAfterSmall) {
    
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      	StrictMock<MockBufferedWriter<10>> dut;
    
      	{
    
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      		EXPECT_CALL(dut, writeInternal(_, 10)).WillOnce(Return(10));
    
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      		EXPECT_CALL(dut, writeInternal(_, 36)).WillOnce(Return(36));
    
      	}
    
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      	EXPECT_EQ(0u, dut.write(testBuffer, 1));
    
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      	EXPECT_EQ(46u, dut.write(testBuffer, 45));
    
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      	EXPECT_EQ(0u, dut.flush());
    
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      }

Line	Branch	Exec	Source
1			#include "pch.h"
2
3			#include "buffered_writer.h"
4
5			using ::testing::_;
6			using ::testing::Return;
7			using ::testing::StrictMock;
8
9			template <int TBufferSize>
10			struct MockBufferedWriter : public BufferedWriter<TBufferSize>
11			{
12	6/6 MockBufferedWriter<50>::gmock_writeInternal(testing::Matcher<char const> const&, testing::Matcher<unsigned long> const&): ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. MockBufferedWriter<10>::gmock_writeInternal(testing::Matcher<char const> const&, testing::Matcher<unsigned long> const&): ✓ Branch 3 taken 6 times. ✓ Branch 7 taken 6 times. ✓ Branch 10 taken 6 times.	14	MOCK_METHOD(size_t, writeInternal, (const char*, size_t), (override));
13			};
14
15			static const char* testBuffer = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
16
17		4	TEST(BufferedWriter, WriteSmall) {
18			// No calls to dut expected
19	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockBufferedWriter<10>> dut;
20
21	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.write(testBuffer, 5));
22		2	}
23
24		4	TEST(BufferedWriter, WriteSmallFlush) {
25	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockBufferedWriter<10>> dut;
26	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 5)).WillOnce(Return(5));
27
28	4/9 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken. ✓ Branch 31 taken 1 time. ✗ Branch 32 not taken.	1	ASSERT_EQ(0u, dut.write(testBuffer, 5));
29
30	3/7 ✓ Branch 4 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(dut.flush(), 5u);
31		1	}
32
33		4	TEST(BufferedWriter, WriteMultipleSmall) {
34	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockBufferedWriter<10>> dut;
35			{
36	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 10)).WillOnce(Return(10));
37	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 2)).WillOnce(Return(2));
38			}
39
40	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.write(testBuffer, 3));
41	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.write(testBuffer, 3));
42	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.write(testBuffer, 3));
43	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(10u, dut.write(testBuffer, 3)); // <- this one should trigger a flush
44
45			// Flush the remainder
46	3/7 ✓ Branch 4 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(dut.flush(), 2u);
47		2	}
48
49		4	TEST(BufferedWriter, WriteSingleFullBufferSize) {
50	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockBufferedWriter<50>> dut;
51
52	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 50)).WillOnce(Return(50));
53
54	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(50u, dut.write(testBuffer, 50));
55
56			// Nothing left to flush!
57	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.flush());
58		2	}
59
60		4	TEST(BufferedWriter, WriteLarge) {
61	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockBufferedWriter<10>> dut;
62
63			{
64	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 45)).WillOnce(Return(45));
65			}
66
67	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(45u, dut.write(testBuffer, 45));
68
69	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.flush());
70		2	}
71
72		4	TEST(BufferedWriter, WriteLargeAfterSmall) {
73	1/1 ✓ Branch 2 taken 1 time.	1	StrictMock<MockBufferedWriter<10>> dut;
74
75			{
76	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 10)).WillOnce(Return(10));
77	8/8 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✓ Branch 10 taken 1 time. ✓ Branch 14 taken 1 time. ✓ Branch 18 taken 1 time. ✓ Branch 23 taken 1 time. ✓ Branch 26 taken 1 time. ✓ Branch 29 taken 1 time.	1	EXPECT_CALL(dut, writeInternal(_, 36)).WillOnce(Return(36));
78			}
79
80	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.write(testBuffer, 1));
81
82	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(46u, dut.write(testBuffer, 45));
83
84	3/7 ✓ Branch 3 taken 1 time. ✓ Branch 7 taken 1 time. ✗ Branch 12 not taken. ✓ Branch 13 taken 1 time. ✗ Branch 16 not taken. ✗ Branch 21 not taken. ✗ Branch 24 not taken.	1	EXPECT_EQ(0u, dut.flush());
85		2	}
86