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Data-driven diagnostics tests

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This commit is contained in:
Aleksey Kladov 2020-07-14 12:05:50 +02:00
parent 7b2ce1a54f
commit af6984f6a6
3 changed files with 92 additions and 99 deletions
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167
crates/ra_hir_ty/src/diagnostics/expr.rs
View file

@ -376,146 +376,117 @@ pub fn record_pattern_missing_fields(
#[cfg(test)]
mod tests {
use expect::{expect, Expect};
use ra_db::fixture::WithFixture;
use crate::{diagnostics::MismatchedArgCount, test_db::TestDB};
fn check_diagnostic(ra_fixture: &str, expect: Expect) {
let msg = TestDB::with_single_file(ra_fixture).0.diagnostic::<MismatchedArgCount>().0;
expect.assert_eq(&msg);
}
fn check_no_diagnostic(ra_fixture: &str) {
let (s, diagnostic_count) =
TestDB::with_single_file(ra_fixture).0.diagnostic::<MismatchedArgCount>();
assert_eq!(0, diagnostic_count, "expected no diagnostic, found one: {}", s);
}
use crate::diagnostics::check_diagnostics;
#[test]
fn simple_free_fn_zero() {
check_diagnostic(
r"
fn zero() {}
fn f() { zero(1); }
",
expect![["\"zero(1)\": Expected 0 arguments, found 1\n"]],
check_diagnostics(
r#"
fn zero() {}
fn f() { zero(1); }
//^^^^^^^ Expected 0 arguments, found 1
"#,
);
check_no_diagnostic(
r"
fn zero() {}
fn f() { zero(); }
",
check_diagnostics(
r#"
fn zero() {}
fn f() { zero(); }
"#,
);
}
#[test]
fn simple_free_fn_one() {
check_diagnostic(
r"
fn one(arg: u8) {}
fn f() { one(); }
",
expect![["\"one()\": Expected 1 argument, found 0\n"]],
check_diagnostics(
r#"
fn one(arg: u8) {}
fn f() { one(); }
//^^^^^ Expected 1 argument, found 0
"#,
);
check_no_diagnostic(
r"
fn one(arg: u8) {}
fn f() { one(1); }
",
check_diagnostics(
r#"
fn one(arg: u8) {}
fn f() { one(1); }
"#,
);
}
#[test]
fn method_as_fn() {
check_diagnostic(
r"
struct S;
impl S {
fn method(&self) {}
}
check_diagnostics(
r#"
struct S;
impl S { fn method(&self) {} }
fn f() {
S::method();
}
",
expect![["\"S::method()\": Expected 1 argument, found 0\n"]],
fn f() {
S::method();
} //^^^^^^^^^^^ Expected 1 argument, found 0
"#,
);
check_no_diagnostic(
r"
struct S;
impl S {
fn method(&self) {}
}
check_diagnostics(
r#"
struct S;
impl S { fn method(&self) {} }
fn f() {
S::method(&S);
S.method();
}
",
fn f() {
S::method(&S);
S.method();
}
"#,
);
}
#[test]
fn method_with_arg() {
check_diagnostic(
r"
struct S;
impl S {
fn method(&self, arg: u8) {}
}
check_diagnostics(
r#"
struct S;
impl S { fn method(&self, arg: u8) {} }
fn f() {
S.method();
}
",
expect![["\"S.method()\": Expected 1 argument, found 0\n"]],
} //^^^^^^^^^^ Expected 1 argument, found 0
"#,
);
check_no_diagnostic(
r"
struct S;
impl S {
fn method(&self, arg: u8) {}
}
check_diagnostics(
r#"
struct S;
impl S { fn method(&self, arg: u8) {} }
fn f() {
S::method(&S, 0);
S.method(1);
}
",
fn f() {
S::method(&S, 0);
S.method(1);
}
"#,
);
}
#[test]
fn tuple_struct() {
check_diagnostic(
r"
struct Tup(u8, u16);
fn f() {
Tup(0);
}
",
expect![["\"Tup(0)\": Expected 2 arguments, found 1\n"]],
check_diagnostics(
r#"
struct Tup(u8, u16);
fn f() {
Tup(0);
} //^^^^^^ Expected 2 arguments, found 1
"#,
)
}
#[test]
fn enum_variant() {
check_diagnostic(
r"
enum En {
Variant(u8, u16),
}
fn f() {
En::Variant(0);
}
",
expect![["\"En::Variant(0)\": Expected 2 arguments, found 1\n"]],
check_diagnostics(
r#"
enum En { Variant(u8, u16), }
fn f() {
En::Variant(0);
} //^^^^^^^^^^^^^^ Expected 2 arguments, found 1
"#,
)
}
}