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-rw-r--r--test/libsolidity/SMTChecker.cpp593
1 files changed, 0 insertions, 593 deletions
diff --git a/test/libsolidity/SMTChecker.cpp b/test/libsolidity/SMTChecker.cpp
index 13fcc5b4..a49618bd 100644
--- a/test/libsolidity/SMTChecker.cpp
+++ b/test/libsolidity/SMTChecker.cpp
@@ -56,599 +56,6 @@ protected:
BOOST_FIXTURE_TEST_SUITE(SMTChecker, SMTCheckerFramework)
-BOOST_AUTO_TEST_CASE(smoke_test)
-{
- string text = R"(
- contract C { }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(simple_overflow)
-{
- string text = R"(
- contract C {
- function f(uint a, uint b) public pure returns (uint) { return a + b; }
- }
- )";
- CHECK_WARNING(text, "Overflow (resulting value larger than");
-}
-
-BOOST_AUTO_TEST_CASE(warn_on_typecast)
-{
- string text = R"(
- contract C {
- function f() public pure returns (uint) {
- return uint8(1);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion checker does not yet implement this expression.");
-}
-
-BOOST_AUTO_TEST_CASE(warn_on_struct)
-{
- string text = R"(
- pragma experimental ABIEncoderV2;
- contract C {
- struct A { uint a; uint b; }
- function f() public pure returns (A memory) {
- return A({ a: 1, b: 2 });
- }
- }
- )";
- CHECK_WARNING_ALLOW_MULTI(text, (vector<string>{
- "Experimental feature",
- "Assertion checker does not yet implement this expression.",
- "Assertion checker does not yet support the type of this variable."
- }));
-}
-
-BOOST_AUTO_TEST_CASE(simple_assert)
-{
- string text = R"(
- contract C {
- function f(uint a) public pure { assert(a == 2); }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
-}
-
-BOOST_AUTO_TEST_CASE(simple_assert_with_require)
-{
- string text = R"(
- contract C {
- function f(uint a) public pure { require(a < 10); assert(a < 20); }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(assignment_in_declaration)
-{
- string text = R"(
- contract C {
- function f() public pure { uint a = 2; assert(a == 2); }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(branches_merge_variables)
-{
- // Branch does not touch variable a
- string text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- // Positive branch touches variable a, but assertion should still hold.
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- a = 3;
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- // Negative branch touches variable a, but assertion should still hold.
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- } else {
- a = 3;
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- // Variable is not merged, if it is only read.
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- assert(a == 3);
- } else {
- assert(a == 3);
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- // Variable is reset in both branches
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 2;
- if (x > 10) {
- a = 3;
- } else {
- a = 3;
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- // Variable is reset in both branches
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 2;
- if (x > 10) {
- a = 3;
- } else {
- a = 4;
- }
- assert(a >= 3);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(branches_assert_condition)
-{
- string text = R"(
- contract C {
- function f(uint x) public pure {
- if (x > 10) {
- assert(x > 9);
- }
- else
- {
- assert(x < 11);
- }
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(uint x) public pure {
- if (x > 10) {
- assert(x > 9);
- }
- else if (x > 2)
- {
- assert(x <= 10 && x > 2);
- }
- else
- {
- assert(0 <= x && x <= 2);
- }
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(ways_to_merge_variables)
-{
- string text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- a++;
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- ++a;
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint a = 3;
- if (x > 10) {
- a = 5;
- }
- assert(a == 3);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
-}
-
-BOOST_AUTO_TEST_CASE(bool_simple)
-{
- string text = R"(
- contract C {
- function f(bool x) public pure {
- assert(x);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- text = R"(
- contract C {
- function f(bool x, bool y) public pure {
- assert(x == y);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- text = R"(
- contract C {
- function f(bool x, bool y) public pure {
- bool z = x || y;
- assert(!(x && y) || z);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(bool x) public pure {
- if (x) {
- assert(x);
- } else {
- assert(!x);
- }
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(bool x) public pure {
- bool y = x;
- assert(x == y);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(bool x) public pure {
- require(x);
- bool y;
- y = false;
- assert(x || y);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(bool_int_mixed)
-{
- string text = R"(
- contract C {
- function f(bool x) public pure {
- uint a;
- if (x)
- a = 1;
- assert(!x || a > 0);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(bool x, uint a) public pure {
- require(!x || a > 0);
- uint b = a;
- assert(!x || b > 0);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(bool x, bool y) public pure {
- uint a;
- if (x) {
- if (y) {
- a = 0;
- } else {
- a = 1;
- }
- } else {
- if (y) {
- a = 1;
- } else {
- a = 0;
- }
- }
- bool xor_x_y = (x && !y) || (!x && y);
- assert(!xor_x_y || a > 0);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
-}
-
-BOOST_AUTO_TEST_CASE(storage_value_vars)
-{
- string text = R"(
- contract C
- {
- address a;
- bool b;
- uint c;
- function f(uint x) public {
- if (x == 0)
- {
- a = 0x0000000000000000000000000000000000000100;
- b = true;
- }
- else
- {
- a = 0x0000000000000000000000000000000000000200;
- b = false;
- }
- assert(a > 0x0000000000000000000000000000000000000000 && b);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- text = R"(
- contract C
- {
- address a;
- bool b;
- uint c;
- function f() public view {
- assert(c > 0);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- text = R"(
- contract C
- {
- function f(uint x) public {
- if (x == 0)
- {
- a = 0x0000000000000000000000000000000000000100;
- b = true;
- }
- else
- {
- a = 0x0000000000000000000000000000000000000200;
- b = false;
- }
- assert(b == (a < 0x0000000000000000000000000000000000000200));
- }
-
- function g() public view {
- require(a < 0x0000000000000000000000000000000000000100);
- assert(c >= 0);
- }
- address a;
- bool b;
- uint c;
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C
- {
- function f() public view {
- assert(c > 0);
- }
- uint c;
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
-
-}
-
-BOOST_AUTO_TEST_CASE(while_loop_simple)
-{
- // Check that variables are cleared
- string text = R"(
- contract C {
- function f(uint x) public pure {
- x = 2;
- while (x > 1) {
- x = 2;
- }
- assert(x == 2);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- // Check that condition is assumed.
- text = R"(
- contract C {
- function f(uint x) public pure {
- while (x == 2) {
- assert(x == 2);
- }
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- // Check that condition is not assumed after the body anymore
- text = R"(
- contract C {
- function f(uint x) public pure {
- while (x == 2) {
- }
- assert(x == 2);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- // Check that negation of condition is not assumed after the body anymore
- text = R"(
- contract C {
- function f(uint x) public pure {
- while (x == 2) {
- }
- assert(x != 2);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
- // Check that side-effects of condition are taken into account
- text = R"(
- contract C {
- function f(uint x, uint y) public pure {
- x = 7;
- while ((x = y) > 0) {
- }
- assert(x == 7);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation happens here");
-}
-
-BOOST_AUTO_TEST_CASE(constant_condition)
-{
- string text = R"(
- contract C {
- function f(uint x) public pure {
- if (x >= 0) { revert(); }
- }
- }
- )";
- CHECK_WARNING_ALLOW_MULTI(text, (vector<string>{
- "Condition is always true",
- "Assertion checker does not yet implement this type of function call"
- }));
- text = R"(
- contract C {
- function f(uint x) public pure {
- if (x >= 10) { if (x < 10) { revert(); } }
- }
- }
- )";
- CHECK_WARNING_ALLOW_MULTI(text, (vector<string>{
- "Condition is always false",
- "Assertion checker does not yet implement this type of function call"
- }));
- // a plain literal constant is fine
- text = R"(
- contract C {
- function f(uint) public pure {
- if (true) { revert(); }
- }
- }
- )";
- CHECK_WARNING(text, "Assertion checker does not yet implement this type of function call");
-}
-
-
-BOOST_AUTO_TEST_CASE(for_loop)
-{
- string text = R"(
- contract C {
- function f(uint x) public pure {
- require(x == 2);
- for (;;) {}
- assert(x == 2);
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(uint x) public pure {
- for (; x == 2; ) {
- assert(x == 2);
- }
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(uint x) public pure {
- for (uint y = 2; x < 10; ) {
- assert(y == 2);
- }
- }
- }
- )";
- CHECK_SUCCESS_NO_WARNINGS(text);
- text = R"(
- contract C {
- function f(uint x) public pure {
- for (uint y = 2; x < 10; y = 3) {
- assert(y == 2);
- }
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation");
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint y;
- for (y = 2; x < 10; ) {
- y = 3;
- }
- assert(y == 3);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation");
- text = R"(
- contract C {
- function f(uint x) public pure {
- uint y;
- for (y = 2; x < 10; ) {
- y = 3;
- }
- assert(y == 2);
- }
- }
- )";
- CHECK_WARNING(text, "Assertion violation");
-}
-
BOOST_AUTO_TEST_CASE(division)
{
string text = R"(
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