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#[cfg(test)]
pub mod ansi_test_utils {
use ansi_term;
use console::strip_ansi_codes;
use crate::config::Config;
use crate::paint;
use crate::style::Style;
pub fn assert_line_has_style(
output: &str,
line_number: usize,
expected_prefix: &str,
expected_style: &str,
config: &Config,
) {
_assert_line_has_style(
output,
line_number,
expected_prefix,
expected_style,
config,
false,
);
}
pub fn assert_line_has_4_bit_color_style(
output: &str,
line_number: usize,
expected_prefix: &str,
expected_style: &str,
config: &Config,
) {
_assert_line_has_style(
output,
line_number,
expected_prefix,
expected_style,
config,
true,
);
}
pub fn assert_line_has_no_color(output: &str, line_number: usize, expected_prefix: &str) {
let line = output.lines().nth(line_number).unwrap();
let stripped_line = strip_ansi_codes(line);
assert!(stripped_line.starts_with(expected_prefix));
assert_eq!(line, stripped_line);
}
/// Assert that the specified line number of output (a) matches
/// `expected_prefix` and (b) for the length of expected_prefix is
/// syntax-highlighted according to `language_extension`.
pub fn assert_line_is_syntax_highlighted(
output: &str,
line_number: usize,
expected_prefix: &str,
language_extension: &str,
config: &Config,
) {
let line = output.lines().nth(line_number).unwrap();
let stripped_line = &strip_ansi_codes(line);
assert!(stripped_line.starts_with(expected_prefix));
let painted_line = paint_line(expected_prefix, language_extension, config);
// remove trailing newline appended by paint::paint_lines.
assert!(line.starts_with(painted_line.trim_end()));
}
pub fn assert_has_color_other_than_plus_color(string: &str, config: &Config) {
let (string_without_any_color, string_with_plus_color_only) =
get_color_variants(string, config);
assert_ne!(string, string_without_any_color);
assert_ne!(string, string_with_plus_color_only);
}
pub fn assert_has_plus_color_only(string: &str, config: &Config) {
let (string_without_any_color, string_with_plus_color_only) =
get_color_variants(string, config);
assert_ne!(string, string_without_any_color);
assert_eq!(string, string_with_plus_color_only);
}
pub fn get_color_variants(string: &str, config: &Config) -> (String, String) {
let string_without_any_color = strip_ansi_codes(string).to_string();
let string_with_plus_color_only = config
.plus_style
.ansi_term_style
.paint(&string_without_any_color);
(
string_without_any_color.to_string(),
string_with_plus_color_only.to_string(),
)
}
pub fn paint_line(line: &str, language_extension: &str, config: &Config) -> String {
let mut output_buffer = String::new();
let mut unused_writer = Vec::<u8>::new();
let mut painter = paint::Painter::new(&mut unused_writer, config);
let syntax_highlighted_style = Style {
is_syntax_highlighted: true,
..Style::new()
};
painter.set_syntax(Some(language_extension));
painter.set_highlighter();
let lines = vec![line];
let syntax_style_sections = painter.highlighter.highlight(line, &config.syntax_set);
paint::Painter::paint_lines(
vec![syntax_style_sections],
vec![vec![(syntax_highlighted_style, lines[0])]],
&mut output_buffer,
config,
"",
config.null_style,
config.null_style,
None,
);
output_buffer
}
fn _assert_line_has_style(
output: &str,
line_number: usize,
expected_prefix: &str,
expected_style: &str,
config: &Config,
_4_bit_color: bool,
) {
let line = output.lines().nth(line_number).unwrap();
assert!(strip_ansi_codes(line).starts_with(expected_prefix));
let mut style = Style::from_str(expected_style, None, None, None, config.true_color, false);
if _4_bit_color {
style.ansi_term_style.foreground = style
.ansi_term_style
.foreground
.map(ansi_term_fixed_foreground_to_4_bit_color);
}
assert!(line.starts_with(&style.ansi_term_style.prefix().to_string()))
}
fn ansi_term_fixed_foreground_to_4_bit_color(color: ansi_term::Color) -> ansi_term::Color {
match color {
ansi_term::Color::Fixed(30) => ansi_term::Color::Black,
ansi_term::Color::Fixed(31) => ansi_term::Color::Red,
ansi_term::Color::Fixed(32) => ansi_term::Color::Green,
ansi_term::Color::Fixed(33) => ansi_term::Color::Yellow,
ansi_term::Color::Fixed(34) => ansi_term::Color::Blue,
ansi_term::Color::Fixed(35) => ansi_term::Color::Purple,
ansi_term::Color::Fixed(36) => ansi_term::Color::Cyan,
ansi_term::Color::Fixed(37) => ansi_term::Color::White,
color => panic!(
"Invalid 4-bit color: {:?}. \
(Add bright color entries to this map if needed for tests.",
color
),
}
}
}
|