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