89 lines
2.5 KiB
Rust
89 lines
2.5 KiB
Rust
/// tests cases ported over from python standard library
|
|
use textwrap::{dedent, indent};
|
|
|
|
const ROUNDTRIP_CASES: [&str; 3] = [
|
|
// basic test case
|
|
"Hi.\nThis is a test.\nTesting.",
|
|
// include a blank line
|
|
"Hi.\nThis is a test.\n\nTesting.",
|
|
// include leading and trailing blank lines
|
|
"\nHi.\nThis is a test.\nTesting.\n",
|
|
];
|
|
|
|
const WINDOWS_CASES: [&str; 2] = [
|
|
// use windows line endings
|
|
"Hi.\r\nThis is a test.\r\nTesting.",
|
|
// pathological case
|
|
"Hi.\r\nThis is a test.\n\r\nTesting.\r\n\n",
|
|
];
|
|
|
|
#[test]
|
|
fn test_indent_nomargin_default() {
|
|
// indent should do nothing if 'prefix' is empty.
|
|
for text in ROUNDTRIP_CASES.iter() {
|
|
assert_eq!(&indent(text, ""), text);
|
|
}
|
|
for text in WINDOWS_CASES.iter() {
|
|
assert_eq!(&indent(text, ""), text);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_roundtrip_spaces() {
|
|
// A whitespace prefix should roundtrip with dedent
|
|
for text in ROUNDTRIP_CASES.iter() {
|
|
assert_eq!(&dedent(&indent(text, " ")), text);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_roundtrip_tabs() {
|
|
// A whitespace prefix should roundtrip with dedent
|
|
for text in ROUNDTRIP_CASES.iter() {
|
|
assert_eq!(&dedent(&indent(text, "\t\t")), text);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_roundtrip_mixed() {
|
|
// A whitespace prefix should roundtrip with dedent
|
|
for text in ROUNDTRIP_CASES.iter() {
|
|
assert_eq!(&dedent(&indent(text, " \t \t ")), text);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_indent_default() {
|
|
// Test default indenting of lines that are not whitespace only
|
|
let prefix = " ";
|
|
let expected = [
|
|
// Basic test case
|
|
" Hi.\n This is a test.\n Testing.",
|
|
// Include a blank line
|
|
" Hi.\n This is a test.\n\n Testing.",
|
|
// Include leading and trailing blank lines
|
|
"\n Hi.\n This is a test.\n Testing.\n",
|
|
];
|
|
for (text, expect) in ROUNDTRIP_CASES.iter().zip(expected.iter()) {
|
|
assert_eq!(&indent(text, prefix), expect)
|
|
}
|
|
let expected = [
|
|
// Use Windows line endings
|
|
" Hi.\r\n This is a test.\r\n Testing.",
|
|
// Pathological case
|
|
" Hi.\r\n This is a test.\n\r\n Testing.\r\n\n",
|
|
];
|
|
for (text, expect) in WINDOWS_CASES.iter().zip(expected.iter()) {
|
|
assert_eq!(&indent(text, prefix), expect)
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn indented_text_should_have_the_same_number_of_lines_as_the_original_text() {
|
|
let texts = ["foo\nbar", "foo\nbar\n", "foo\nbar\nbaz"];
|
|
for original in texts.iter() {
|
|
let indented = indent(original, "");
|
|
assert_eq!(&indented, original);
|
|
}
|
|
}
|