solidity/test/libsolidity/syntaxTests/inheritance/override/override.sol

abstract contract A {
	int public testvar;
	function test() internal virtual returns (uint256);
	function test2() internal virtual returns (uint256);
}
contract X is A {
	int public override testvar;
	function test() internal override returns (uint256) {}
	function test2() internal override(A) returns (uint256) {}
}
// ----
// DeclarationError: (171-198): Identifier already declared.
Add some more abstract keywords in test to make sure the correct property is tested. 2019-11-04 13:33:33 +00:00			`abstract contract A {`
Implement override checking 2019-09-16 12:33:43 +00:00			`int public testvar;`
Implement virtual keyword 2019-11-05 17:25:34 +00:00			`function test() internal virtual returns (uint256);`
			`function test2() internal virtual returns (uint256);`
Implement override checking 2019-09-16 12:33:43 +00:00			`}`
Require unimplemented functions to be virtual. 2019-12-02 20:39:53 +00:00			`contract X is A {`
Parse override keyword 2019-08-13 11:00:46 +00:00			`int public override testvar;`
Require unimplemented functions to be virtual. 2019-12-02 20:39:53 +00:00			`function test() internal override returns (uint256) {}`
			`function test2() internal override(A) returns (uint256) {}`
Parse override keyword 2019-08-13 11:00:46 +00:00			`}`
			`// ----`
Make shadowing of inherited state variables an error. 2019-11-27 14:11:56 +00:00			`// DeclarationError: (171-198): Identifier already declared.`