diff options
Diffstat (limited to 'crates/libsyntax2/tests/testutils/src')
-rw-r--r-- | crates/libsyntax2/tests/testutils/src/lib.rs | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/crates/libsyntax2/tests/testutils/src/lib.rs b/crates/libsyntax2/tests/testutils/src/lib.rs deleted file mode 100644 index 39c821661..000000000 --- a/crates/libsyntax2/tests/testutils/src/lib.rs +++ /dev/null | |||
@@ -1,111 +0,0 @@ | |||
1 | extern crate difference; | ||
2 | |||
3 | use std::{ | ||
4 | fs, | ||
5 | path::{Path, PathBuf}, | ||
6 | }; | ||
7 | |||
8 | use difference::Changeset; | ||
9 | |||
10 | /// Read file and normalize newlines. | ||
11 | /// | ||
12 | /// `rustc` seems to always normalize `\r\n` newlines to `\n`: | ||
13 | /// | ||
14 | /// ``` | ||
15 | /// let s = " | ||
16 | /// "; | ||
17 | /// assert_eq!(s.as_bytes(), &[10]); | ||
18 | /// ``` | ||
19 | /// | ||
20 | /// so this should always be correct. | ||
21 | fn read_text(path: &Path) -> String { | ||
22 | fs::read_to_string(path).unwrap().replace("\r\n", "\n") | ||
23 | } | ||
24 | |||
25 | pub fn dir_tests<F>(paths: &[&str], f: F) | ||
26 | where | ||
27 | F: Fn(&str) -> String, | ||
28 | { | ||
29 | for path in collect_tests(paths) { | ||
30 | let input_code = read_text(&path); | ||
31 | let parse_tree = f(&input_code); | ||
32 | let path = path.with_extension("txt"); | ||
33 | if !path.exists() { | ||
34 | println!("\nfile: {}", path.display()); | ||
35 | println!("No .txt file with expected result, creating...\n"); | ||
36 | println!("{}\n{}", input_code, parse_tree); | ||
37 | fs::write(&path, parse_tree).unwrap(); | ||
38 | panic!("No expected result") | ||
39 | } | ||
40 | let expected = read_text(&path); | ||
41 | let expected = expected.as_str(); | ||
42 | let parse_tree = parse_tree.as_str(); | ||
43 | assert_equal_text(expected, parse_tree, &path); | ||
44 | } | ||
45 | } | ||
46 | |||
47 | fn assert_equal_text(expected: &str, actual: &str, path: &Path) { | ||
48 | if expected != actual { | ||
49 | print_difference(expected, actual, path) | ||
50 | } | ||
51 | } | ||
52 | |||
53 | fn collect_tests(paths: &[&str]) -> Vec<PathBuf> { | ||
54 | paths | ||
55 | .iter() | ||
56 | .flat_map(|path| { | ||
57 | let path = test_data_dir().join(path); | ||
58 | test_from_dir(&path).into_iter() | ||
59 | }) | ||
60 | .collect() | ||
61 | } | ||
62 | |||
63 | fn test_from_dir(dir: &Path) -> Vec<PathBuf> { | ||
64 | let mut acc = Vec::new(); | ||
65 | for file in fs::read_dir(&dir).unwrap() { | ||
66 | let file = file.unwrap(); | ||
67 | let path = file.path(); | ||
68 | if path.extension().unwrap_or_default() == "rs" { | ||
69 | acc.push(path); | ||
70 | } | ||
71 | } | ||
72 | acc.sort(); | ||
73 | acc | ||
74 | } | ||
75 | |||
76 | const REWRITE: bool = false; | ||
77 | |||
78 | fn print_difference(expected: &str, actual: &str, path: &Path) { | ||
79 | let dir = project_dir(); | ||
80 | let path = path.strip_prefix(&dir).unwrap_or_else(|_| path); | ||
81 | if expected.trim() == actual.trim() { | ||
82 | println!("whitespace difference, rewriting"); | ||
83 | println!("file: {}\n", path.display()); | ||
84 | fs::write(path, actual).unwrap(); | ||
85 | return; | ||
86 | } | ||
87 | if REWRITE { | ||
88 | println!("rewriting {}", path.display()); | ||
89 | fs::write(path, actual).unwrap(); | ||
90 | return; | ||
91 | } | ||
92 | let changeset = Changeset::new(actual, expected, "\n"); | ||
93 | println!("Expected:\n{}\n\nActual:\n{}\n", expected, actual); | ||
94 | print!("{}", changeset); | ||
95 | println!("file: {}\n", path.display()); | ||
96 | panic!("Comparison failed") | ||
97 | } | ||
98 | |||
99 | fn project_dir() -> PathBuf { | ||
100 | let dir = env!("CARGO_MANIFEST_DIR"); | ||
101 | PathBuf::from(dir) | ||
102 | .parent() | ||
103 | .unwrap() | ||
104 | .parent() | ||
105 | .unwrap() | ||
106 | .to_owned() | ||
107 | } | ||
108 | |||
109 | fn test_data_dir() -> PathBuf { | ||
110 | project_dir().join("tests/data") | ||
111 | } | ||