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Change the triple buffer object interface

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This commit is contained in:
Fred Sundvik 2016-02-21 18:30:04 +02:00
parent 679bfe7c54
commit 2710361cd8
3 changed files with 49 additions and 78 deletions
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78
serial_link/tests/triple_buffered_object_tests.c
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@ -40,67 +40,43 @@ AfterEach(TripleBufferedObject) {}
Ensure(TripleBufferedObject, writes_and_reads_object) {
uint32_t src = 0x3456ABCC;
uint32_t dst;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst);
assert_that(dst, is_equal_to(src));
*triple_buffer_begin_write(&test_object) = 0x3456ABCC;
triple_buffer_end_write(&test_object);
assert_that(*triple_buffer_read(&test_object), is_equal_to(0x3456ABCC));
}
Ensure(TripleBufferedObject, does_not_read_empty) {
uint32_t dst;
bool res = triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst);
assert_that(res, is_equal_to(false));
}
Ensure(TripleBufferedObject, writes_and_reads_object_decomposed) {
uint32_t src = 0x3456ABCC;
uint32_t dst;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
triple_buffer_begin_read(4, (triple_buffer_object_t*)&test_object);
triple_buffer_actual_read(4, (triple_buffer_object_t*)&test_object, &dst);
triple_buffer_end_read(4, (triple_buffer_object_t*)&test_object);
assert_that(dst, is_equal_to(src));
assert_that(triple_buffer_read(&test_object), is_equal_to(NULL));
}
Ensure(TripleBufferedObject, writes_twice_and_reads_object) {
uint32_t src = 0x3456ABCC;
uint32_t dst;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
src = 0x44778899;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst);
assert_that(dst, is_equal_to(src));
*triple_buffer_begin_write(&test_object) = 0x3456ABCC;
triple_buffer_end_write(&test_object);
*triple_buffer_begin_write(&test_object) = 0x44778899;
triple_buffer_end_write(&test_object);
assert_that(*triple_buffer_read(&test_object), is_equal_to(0x44778899));
}
Ensure(TripleBufferedObject, performs_another_write_in_the_middle_of_read) {
uint32_t src = 1;
uint32_t dst;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
src = 2;
triple_buffer_begin_read(4, (triple_buffer_object_t*)&test_object);
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
triple_buffer_actual_read(4, (triple_buffer_object_t*)&test_object, &dst);
triple_buffer_end_read(4, (triple_buffer_object_t*)&test_object);
assert_that(dst, is_equal_to(1));
triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst);
assert_that(dst, is_equal_to(2));
assert_that(triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst), is_equal_to(false));
*triple_buffer_begin_write(&test_object) = 1;
triple_buffer_end_write(&test_object);
uint32_t* read = triple_buffer_read(&test_object);
*triple_buffer_begin_write(&test_object) = 2;
triple_buffer_end_write(&test_object);
assert_that(*read, is_equal_to(1));
assert_that(*triple_buffer_read(&test_object), is_equal_to(2));
assert_that(triple_buffer_read(&test_object), is_equal_to(NULL));
}
Ensure(TripleBufferedObject, performs_two_writes_in_the_middle_of_read) {
uint32_t src = 1;
uint32_t dst;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
triple_buffer_begin_read(4, (triple_buffer_object_t*)&test_object);
src = 2;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
src = 3;
triple_buffer_write(4, (triple_buffer_object_t*)&test_object, &src);
triple_buffer_actual_read(4, (triple_buffer_object_t*)&test_object, &dst);
triple_buffer_end_read(4, (triple_buffer_object_t*)&test_object);
assert_that(dst, is_equal_to(1));
triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst);
assert_that(dst, is_equal_to(3));
assert_that(triple_buffer_read(4, (triple_buffer_object_t*)&test_object, &dst), is_equal_to(false));
*triple_buffer_begin_write(&test_object) = 1;
triple_buffer_end_write(&test_object);
uint32_t* read = triple_buffer_read(&test_object);
*triple_buffer_begin_write(&test_object) = 2;
triple_buffer_end_write(&test_object);
*triple_buffer_begin_write(&test_object) = 3;
triple_buffer_end_write(&test_object);
assert_that(*read, is_equal_to(1));
assert_that(*triple_buffer_read(&test_object), is_equal_to(3));
assert_that(triple_buffer_read(&test_object), is_equal_to(NULL));
}