cairo-lang-semantic 2.18.0

Cairo semantic model.
Documentation 
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//! > Test +=

//! > test_runner_name
test_expr_diagnostics(expect_diagnostics: false)

//! > expr_code
foo()

//! > module_code
fn foo() {
    let mut x: felt252 = 3;
    x += 4;
}

//! > function_body

//! > expected_diagnostics

//! > ==========================================================================

//! > Test += for non-variable

//! > test_runner_name
test_expr_diagnostics(expect_diagnostics: true)

//! > expr_code
foo()

//! > module_code
fn foo() {
    4 += 4;
}

//! > function_body

//! > expected_diagnostics
error[E2079]: ref argument must be a variable.
 --> lib.cairo:2:5
    4 += 4;
    ^

//! > ==========================================================================

//! > Test += for non-mutable variable

//! > test_runner_name
test_expr_diagnostics(expect_diagnostics: true)

//! > expr_code
foo()

//! > module_code
fn foo() {
    let x = 3;
    x += 4;
}

//! > function_body

//! > expected_diagnostics
error[E2080]: ref argument must be a mutable variable.
 --> lib.cairo:3:5
    x += 4;
    ^

//! > ==========================================================================

//! > Test += for unsupported pair of types.

//! > test_runner_name
test_expr_diagnostics(expect_diagnostics: true)

//! > expr_code
foo()

//! > module_code
fn foo() {
    let mut x = 3;
    x += true;
}

//! > function_body

//! > expected_diagnostics
error[E2311]: Trait has no implementation in context: core::ops::arith::AddAssign::<core::felt252, core::bool>.
 --> lib.cairo:3:5
    x += true;
    ^^^^^^^^^

//! > ==========================================================================

//! > Test /= for an unsupported type.

//! > test_runner_name
test_expr_diagnostics(expect_diagnostics: true)

//! > expr_code
foo()

//! > module_code
fn foo() {
    let mut x = true;
    x /= false;
}

//! > function_body

//! > expected_diagnostics
error[E2311]: Trait has no implementation in context: core::ops::arith::DivAssign::<core::bool, core::bool>.
 --> lib.cairo:3:5
    x /= false;
    ^^^^^^^^^^