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Unit tests for encoding/decoding Variant
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@a-ivanov
a-ivanov committed Jan 24, 2021
1 parent 8aed1ee commit 69b554e
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171 changes: 171 additions & 0 deletions tests/test_marshalls.h
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Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,177 @@ TEST_CASE("[Marshalls] C string encoding") {
CHECK(data[4] == 't');
CHECK(data[5] == '\0');
}

TEST_CASE("[Marshalls] NIL Variant encoding") {
int r_len;
Variant variant;
uint8_t buffer[4];

CHECK(encode_variant(variant, buffer, r_len) == OK);
CHECK_MESSAGE(r_len == 4, "Length == 4 bytes for Variant::Type");
CHECK_MESSAGE(buffer[0] == 0x00, "Variant::NIL");
CHECK(buffer[1] == 0x00);
CHECK(buffer[2] == 0x00);
CHECK(buffer[3] == 0x00);
// No value
}

TEST_CASE("[Marshalls] INT 32 bit Variant encoding") {
int r_len;
Variant variant(0x12345678);
uint8_t buffer[8];

CHECK(encode_variant(variant, buffer, r_len) == OK);
CHECK_MESSAGE(r_len == 8, "Length == 4 bytes for Variant::Type + 4 bytes for int32_t");
CHECK_MESSAGE(buffer[0] == 0x02, "Variant::INT");
CHECK(buffer[1] == 0x00);
CHECK(buffer[2] == 0x00);
CHECK(buffer[3] == 0x00);
// Check value
CHECK(buffer[4] == 0x78);
CHECK(buffer[5] == 0x56);
CHECK(buffer[6] == 0x34);
CHECK(buffer[7] == 0x12);
}

TEST_CASE("[Marshalls] INT 64 bit Variant encoding") {
int r_len;
Variant variant(uint64_t(0x0f123456789abcdef));
uint8_t buffer[12];

CHECK(encode_variant(variant, buffer, r_len) == OK);
CHECK_MESSAGE(r_len == 12, "Length == 4 bytes for Variant::Type + 8 bytes for int64_t");
CHECK_MESSAGE(buffer[0] == 0x02, "Variant::INT");
CHECK(buffer[1] == 0x00);
CHECK_MESSAGE(buffer[2] == 0x01, "ENCODE_FLAG_64");
CHECK(buffer[3] == 0x00);
// Check value
CHECK(buffer[4] == 0xef);
CHECK(buffer[5] == 0xcd);
CHECK(buffer[6] == 0xab);
CHECK(buffer[7] == 0x89);
CHECK(buffer[8] == 0x67);
CHECK(buffer[9] == 0x45);
CHECK(buffer[10] == 0x23);
CHECK(buffer[11] == 0xf1);
}

TEST_CASE("[Marshalls] FLOAT single precision Variant encoding") {
int r_len;
Variant variant(0.15625f);
uint8_t buffer[8];

CHECK(encode_variant(variant, buffer, r_len) == OK);
CHECK_MESSAGE(r_len == 8, "Length == 4 bytes for Variant::Type + 4 bytes for float");
CHECK_MESSAGE(buffer[0] == 0x03, "Variant::FLOAT");
CHECK(buffer[1] == 0x00);
CHECK(buffer[2] == 0x00);
CHECK(buffer[3] == 0x00);
// Check value
CHECK(buffer[4] == 0x00);
CHECK(buffer[5] == 0x00);
CHECK(buffer[6] == 0x20);
CHECK(buffer[7] == 0x3e);
}

TEST_CASE("[Marshalls] FLOAT double precision Variant encoding") {
int r_len;
Variant variant(0.33333333333333333);
uint8_t buffer[12];

CHECK(encode_variant(variant, buffer, r_len) == OK);
CHECK_MESSAGE(r_len == 12, "Length == 4 bytes for Variant::Type + 8 bytes for double");
CHECK_MESSAGE(buffer[0] == 0x03, "Variant::FLOAT");
CHECK(buffer[1] == 0x00);
CHECK_MESSAGE(buffer[2] == 0x01, "ENCODE_FLAG_64");
CHECK(buffer[3] == 0x00);
// Check value
CHECK(buffer[4] == 0x55);
CHECK(buffer[5] == 0x55);
CHECK(buffer[6] == 0x55);
CHECK(buffer[7] == 0x55);
CHECK(buffer[8] == 0x55);
CHECK(buffer[9] == 0x55);
CHECK(buffer[10] == 0xd5);
CHECK(buffer[11] == 0x3f);
}

TEST_CASE("[Marshalls] Invalid data Variant decoding") {
Variant variant;
int r_len = 0;
uint8_t some_buffer[1] = { 0x00 };
uint8_t out_of_range_type_buffer[4] = { 0xff }; // Greater than Variant::VARIANT_MAX

CHECK(decode_variant(variant, some_buffer, /* less than 4 */ 1, &r_len) == ERR_INVALID_DATA);
CHECK(r_len == 0);

CHECK(decode_variant(variant, out_of_range_type_buffer, 4, &r_len) == ERR_INVALID_DATA);
CHECK(r_len == 0);
}

TEST_CASE("[Marshalls] NIL Variant decoding") {
Variant variant;
int r_len;
uint8_t buffer[] = {
0x00, 0x00, 0x00, 0x00 // Variant::NIL
};

CHECK(decode_variant(variant, buffer, 4, &r_len) == OK);
CHECK(r_len == 4);
CHECK(variant == Variant());
}

TEST_CASE("[Marshalls] INT 32 bit Variant decoding") {
Variant variant;
int r_len;
uint8_t buffer[] = {
0x02, 0x00, 0x00, 0x00, // Variant::INT
0x78, 0x56, 0x34, 0x12 // value
};

CHECK(decode_variant(variant, buffer, 8, &r_len) == OK);
CHECK(r_len == 8);
CHECK(variant == Variant(0x12345678));
}

TEST_CASE("[Marshalls] INT 64 bit Variant decoding") {
Variant variant;
int r_len;
uint8_t buffer[] = {
0x02, 0x00, 0x01, 0x00, // Variant::INT & ENCODE_FLAG_64
0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0xf1 // value
};

CHECK(decode_variant(variant, buffer, 12, &r_len) == OK);
CHECK(r_len == 12);
CHECK(variant == Variant(uint64_t(0x0f123456789abcdef)));
}

TEST_CASE("[Marshalls] FLOAT single precision Variant decoding") {
Variant variant;
int r_len;
uint8_t buffer[] = {
0x03, 0x00, 0x00, 0x00, // Variant::FLOAT
0x00, 0x00, 0x20, 0x3e // value
};

CHECK(decode_variant(variant, buffer, 8, &r_len) == OK);
CHECK(r_len == 8);
CHECK(variant == Variant(0.15625f));
}

TEST_CASE("[Marshalls] FLOAT double precision Variant decoding") {
Variant variant;
int r_len;
uint8_t buffer[] = {
0x03, 0x00, 0x01, 0x00, // Variant::FLOAT & ENCODE_FLAG_64
0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xd5, 0x3f // value
};

CHECK(decode_variant(variant, buffer, 12, &r_len) == OK);
CHECK(r_len == 12);
CHECK(variant == Variant(0.33333333333333333));
}
} // namespace TestMarshalls

#endif // TEST_MARSHALLS_H

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