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extern crate libeditor;
extern crate libsyntax2;
extern crate itertools;
#[macro_use]
extern crate assert_eq_text;
use std::fmt;
use itertools::Itertools;
use libeditor::{
File, TextUnit, TextRange, ActionResult, CursorPosition,
highlight, runnables, extend_selection, file_structure,
flip_comma, add_derive,
};
#[test]
fn test_extend_selection() {
let file = file(r#"fn foo() {
1 + 1
}
"#);
let range = TextRange::offset_len(18.into(), 0.into());
let range = extend_selection(&file, range).unwrap();
assert_eq!(range, TextRange::from_to(17.into(), 18.into()));
let range = extend_selection(&file, range).unwrap();
assert_eq!(range, TextRange::from_to(15.into(), 20.into()));
}
#[test]
fn test_highlighting() {
let file = file(r#"
// comment
fn main() {}
println!("Hello, {}!", 92);
"#);
let hls = highlight(&file);
dbg_eq(
r#"[HighlightedRange { range: [1; 11), tag: "comment" },
HighlightedRange { range: [12; 14), tag: "keyword" },
HighlightedRange { range: [15; 19), tag: "function" },
HighlightedRange { range: [29; 36), tag: "text" },
HighlightedRange { range: [38; 50), tag: "string" },
HighlightedRange { range: [52; 54), tag: "literal" }]"#,
&hls,
);
}
#[test]
fn test_runnables() {
let file = file(r#"
fn main() {}
#[test]
fn test_foo() {}
#[test]
#[ignore]
fn test_foo() {}
"#);
let runnables = runnables(&file);
dbg_eq(
r#"[Runnable { range: [1; 13), kind: Bin },
Runnable { range: [15; 39), kind: Test { name: "test_foo" } },
Runnable { range: [41; 75), kind: Test { name: "test_foo" } }]"#,
&runnables,
)
}
#[test]
fn test_file_structure() {
let file = file(r#"
struct Foo {
x: i32
}
mod m {
fn bar() {}
}
enum E { X, Y(i32) }
type T = ();
static S: i32 = 92;
const C: i32 = 92;
impl E {}
impl fmt::Debug for E {}
"#);
let symbols = file_structure(&file);
dbg_eq(
r#"[StructureNode { parent: None, label: "Foo", navigation_range: [8; 11), node_range: [1; 26), kind: STRUCT_DEF },
StructureNode { parent: Some(0), label: "x", navigation_range: [18; 19), node_range: [18; 24), kind: NAMED_FIELD },
StructureNode { parent: None, label: "m", navigation_range: [32; 33), node_range: [28; 53), kind: MODULE },
StructureNode { parent: Some(2), label: "bar", navigation_range: [43; 46), node_range: [40; 51), kind: FN_DEF },
StructureNode { parent: None, label: "E", navigation_range: [60; 61), node_range: [55; 75), kind: ENUM_DEF },
StructureNode { parent: None, label: "T", navigation_range: [81; 82), node_range: [76; 88), kind: TYPE_DEF },
StructureNode { parent: None, label: "S", navigation_range: [96; 97), node_range: [89; 108), kind: STATIC_DEF },
StructureNode { parent: None, label: "C", navigation_range: [115; 116), node_range: [109; 127), kind: CONST_DEF },
StructureNode { parent: None, label: "impl E", navigation_range: [134; 135), node_range: [129; 138), kind: IMPL_ITEM },
StructureNode { parent: None, label: "impl fmt::Debug for E", navigation_range: [160; 161), node_range: [140; 164), kind: IMPL_ITEM }]"#,
&symbols,
)
}
#[test]
fn test_swap_comma() {
check_action(
"fn foo(x: i32,<|> y: Result<(), ()>) {}",
"fn foo(y: Result<(), ()>,<|> x: i32) {}",
|file, off| flip_comma(file, off).map(|f| f()),
)
}
#[test]
fn test_add_derive() {
check_action(
"struct Foo { a: i32, <|>}",
"#[derive(<|>)]\nstruct Foo { a: i32, }",
|file, off| add_derive(file, off).map(|f| f()),
)
}
fn file(text: &str) -> File {
File::parse(text)
}
fn dbg_eq(expected: &str, actual: &impl fmt::Debug) {
let actual = format!("{:?}", actual);
let expected = expected.lines().map(|l| l.trim()).join(" ");
assert_eq!(expected, actual);
}
fn check_action<F: Fn(&File, TextUnit) -> Option<ActionResult>>(
before: &str,
after: &str,
f: F,
) {
let (before_cursor_pos, before) = extract_cursor(before);
let file = file(&before);
let result = f(&file, before_cursor_pos).expect("code action is not applicable");
let actual = result.edit.apply(&before);
let actual_cursor_pos: u32 = match result.cursor_position {
CursorPosition::Same => result.edit.apply_to_offset(before_cursor_pos).unwrap(),
CursorPosition::Offset(off) => off,
}.into();
let actual_cursor_pos = actual_cursor_pos as usize;
let mut actual_with_cursor = String::new();
actual_with_cursor.push_str(&actual[..actual_cursor_pos]);
actual_with_cursor.push_str("<|>");
actual_with_cursor.push_str(&actual[actual_cursor_pos..]);
assert_eq_text!(after, &actual_with_cursor);
}
fn extract_cursor(text: &str) -> (TextUnit, String) {
let cursor = "<|>";
let cursor_pos = match text.find(cursor) {
None => panic!("text should contain cursor marker"),
Some(pos) => pos,
};
let mut new_text = String::with_capacity(text.len() - cursor.len());
new_text.push_str(&text[..cursor_pos]);
new_text.push_str(&text[cursor_pos + cursor.len()..]);
let cursor_pos = TextUnit::from(cursor_pos as u32);
(cursor_pos, new_text)
}
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