wgpu/tests/errors.rs
2021-05-02 23:49:34 -04:00

79 lines
1.7 KiB
Rust

#[cfg(feature = "wgsl-in")]
fn check(input: &str, snapshot: &str) {
let output = naga::front::wgsl::parse_str(input)
.expect_err("expected parser error")
.emit_to_string(input);
if output != snapshot {
for diff in diff::lines(&output, snapshot) {
match diff {
diff::Result::Left(l) => println!("-{}", l),
diff::Result::Both(l, _) => println!(" {}", l),
diff::Result::Right(r) => println!("+{}", r),
}
}
panic!("Error snapshot failed");
}
}
#[cfg(feature = "wgsl-in")]
#[test]
fn function_without_identifier() {
check(
"fn () {}",
r###"error: expected identifier, found '('
┌─ wgsl:1:4
1 │ fn () {}
│ ^ expected identifier
"###,
);
}
#[cfg(feature = "wgsl-in")]
#[test]
fn invalid_integer() {
check(
"fn foo([location(1.)] x: i32) {}",
r###"error: expected identifier, found '['
┌─ wgsl:1:8
1 │ fn foo([location(1.)] x: i32) {}
│ ^ expected identifier
"###,
);
}
#[cfg(feature = "wgsl-in")]
#[test]
fn invalid_float() {
check(
"let scale: f32 = 1.1.;",
r###"error: expected floating-point literal, found `1.1.`
┌─ wgsl:1:18
1 │ let scale: f32 = 1.1.;
│ ^^^^ expected floating-point literal
"###,
);
}
#[cfg(feature = "wgsl-in")]
#[test]
fn invalid_scalar_width() {
check(
"let scale: f32 = 1.1f1000;",
r###"error: invalid width of `1000` for literal
┌─ wgsl:1:18
1 │ let scale: f32 = 1.1f1000;
│ ^^^^^^^^ invalid width
= note: valid width is 32
"###,
);
}