use expect_test::{expect, Expect};

use crate::tests::completion_list;

fn check(ra_fixture: &str, expect: Expect) {
    let actual = completion_list(ra_fixture);
    expect.assert_eq(&actual);
}

#[test]
fn without_default_impl() {
    check(
        r#"
struct Struct { foo: u32, bar: usize }

fn foo() {
    let other = Struct {
        foo: 5,
        $0
    };
}
"#,
        expect![[r#"
            fd bar usize
        "#]],
    );
}

#[test]
fn record_pattern_field() {
    check(
        r#"
struct Struct { foo: u32, bar: u32 }

fn foo(s: Struct) {
    match s {
        Struct { foo, $0: 92 } => (),
    }
}
"#,
        expect![[r#"
            fd bar u32
        "#]],
    );
}

#[test]
fn pattern_enum_variant() {
    check(
        r#"
enum Enum { Variant { foo: u32, bar: u32 } }
fn foo(e: Enum) {
    match e {
        Enum::Variant { foo, $0 } => (),
    }
}
"#,
        expect![[r#"
            fd bar u32
        "#]],
    );
}

#[test]
fn record_literal_field_in_macro() {
    check(
        r#"
macro_rules! m { ($e:expr) => { $e } }
struct Struct { field: u32 }
fn foo() {
    m!(Struct { fie$0 })
}
"#,
        expect![[r#"
            fd field u32
        "#]],
    );
}

#[test]
fn record_pattern_field_in_macro() {
    check(
        r"
macro_rules! m { ($e:expr) => { $e } }
struct Struct { field: u32 }

fn foo(f: Struct) {
    m!(match f {
        Struct { f$0: 92 } => (),
    })
}
",
        expect![[r#"
            fd field u32
        "#]],
    );
}

#[test]
fn functional_update() {
    // FIXME: This should filter out all completions that do not have the type `Foo`
    // FIXME: Fields should not show up after `.`
    check(
        r#"
//- minicore:default
struct Foo { foo1: u32, foo2: u32 }
impl Default for Foo {
    fn default() -> Self { loop {} }
}

fn main() {
    let thing = 1;
    let foo = Foo { foo1: 0, foo2: 0 };
    let foo2 = Foo { thing, $0 }
}
"#,
        expect![[r#"
            fd ..Default::default()
            fd foo1                 u32
            fd foo2                 u32
        "#]],
    );
    check(
        r#"
//- minicore:default
struct Foo { foo1: u32, foo2: u32 }
impl Default for Foo {
    fn default() -> Self { loop {} }
}

fn main() {
    let thing = 1;
    let foo = Foo { foo1: 0, foo2: 0 };
    let foo2 = Foo { thing, .$0 }
}
"#,
        expect![[r#"
            fd ..Default::default()
            sn ..
        "#]],
    );
    check(
        r#"
//- minicore:default
struct Foo { foo1: u32, foo2: u32 }
impl Default for Foo {
    fn default() -> Self { loop {} }
}

fn main() {
    let thing = 1;
    let foo = Foo { foo1: 0, foo2: 0 };
    let foo2 = Foo { thing, ..$0 }
}
"#,
        expect![[r#"
            kw unsafe
            kw match
            kw while
            kw while let
            kw loop
            kw if
            kw if let
            kw for
            kw true
            kw false
            kw return
            kw self
            kw super
            kw crate
            lc foo                  Foo
            lc thing                i32
            st Foo
            fn main()               fn()
            md core
            bt u32
            tt Sized
            tt Default
            fd ..Default::default()
            fd foo1                 u32
            fd foo2                 u32
            sn Foo {…}              Foo { foo1: ${1:()}, foo2: ${2:()} }$0
        "#]],
    );
    check(
        r#"
//- minicore:default
struct Foo { foo1: u32, foo2: u32 }
impl Default for Foo {
    fn default() -> Self { loop {} }
}

fn main() {
    let thing = 1;
    let foo = Foo { foo1: 0, foo2: 0 };
    let foo2 = Foo { thing, ..Default::$0 }
}
"#,
        expect![[r#"
            fn default() (as Default) fn() -> Self
            fd foo1                   u32
            fd foo2                   u32
        "#]],
    );
}
