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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#[cfg(test)]
mod test {
use crate::fragment_directive_impl::{
create_fragment_directive_string, parse_fragment_directive_and_remove_it_from_hash,
TextDirective,
};
/// This test verifies that valid combinations of [prefix-,]start[,end][,-suffix] are parsed correctly.
#[test]
fn test_parse_fragment_directive_with_one_text_directive() {
// U+2705 WHITE HEAVY CHECK MARK - UTF-8 percent encoding: %E2%9C%85
let checkmark = String::from_utf8(vec![0xE2, 0x9C, 0x85]).unwrap();
let test_cases = vec![
("#:~:text=start", (None, Some("start"), None, None)),
(
"#:~:text=start,end",
(None, Some("start"), Some("end"), None),
),
(
"#:~:text=prefix-,start",
(Some("prefix"), Some("start"), None, None),
),
(
"#:~:text=prefix-,start,end",
(Some("prefix"), Some("start"), Some("end"), None),
),
(
"#:~:text=prefix-,start,end,-suffix",
(Some("prefix"), Some("start"), Some("end"), Some("suffix")),
),
(
"#:~:text=start,-suffix",
(None, Some("start"), None, Some("suffix")),
),
(
"#:~:text=start,end,-suffix",
(None, Some("start"), Some("end"), Some("suffix")),
),
("#:~:text=text=", (None, Some("text="), None, None)),
("#:~:text=%25", (None, Some("%"), None, None)),
("#:~:text=%", (None, Some("%"), None, None)),
("#:~:text=%%", (None, Some("%%"), None, None)),
("#:~:text=%25%25F", (None, Some("%%F"), None, None)),
(
"#:~:text=%E2%9C%85",
(None, Some(checkmark.as_str()), None, None),
),
];
for (url, (prefix, start, end, suffix)) in test_cases {
let (stripped_url, fragment_directive, result) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result.");
assert_eq!(
fragment_directive,
&url[4..],
"The extracted fragment directive string
should be unsanitized and therefore match the input string."
);
assert_eq!(result.len(), 1, "There must be one parsed text fragment.");
assert_eq!(
stripped_url, "",
"The fragment directive must be removed from the url hash."
);
let text_directive = result.first().unwrap();
if prefix.is_none() {
assert!(
text_directive.prefix().is_none(),
"There must be no `prefix` token (test case `{}`).",
url
);
} else {
assert!(
text_directive
.prefix()
.as_ref()
.expect("There must be a `prefix` token.")
.value()
== prefix.unwrap(),
"Wrong value for `prefix` (test case `{}`).",
url
);
}
if start.is_none() {
assert!(
text_directive.start().is_none(),
"There must be no `start` token (test case `{}`).",
url
);
} else {
assert!(
text_directive
.start()
.as_ref()
.expect("There must be a `start` token.")
.value()
== start.unwrap(),
"Wrong value for `start` (test case `{}`).",
url
);
}
if end.is_none() {
assert!(
text_directive.end().is_none(),
"There must be no `end` token (test case `{}`).",
url
);
} else {
assert!(
text_directive
.end()
.as_ref()
.expect("There must be a `end` token.")
.value()
== end.unwrap(),
"Wrong value for `end` (test case `{}`).",
url
);
}
if suffix.is_none() {
assert!(
text_directive.suffix().is_none(),
"There must be no `suffix` token (test case `{}`).",
url
);
} else {
assert!(
text_directive
.suffix()
.as_ref()
.expect("There must be a `suffix` token.")
.value()
== suffix.unwrap(),
"Wrong value for `suffix` (test case `{}`).",
url
);
}
}
}
#[test]
fn test_parse_full_url() {
for (url, stripped_url_ref) in [
(
),
(
),
(
),
] {
let (stripped_url, fragment_directive, _) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result");
assert_eq!(
stripped_url, stripped_url_ref,
"The stripped url is not correct."
);
assert_eq!(fragment_directive, "text=foo");
}
}
/// This test verifies that a text fragment is parsed correctly if it is preceded
/// or followed by a fragment (i.e. `#foo:~:text=bar`).
#[test]
fn test_parse_text_fragment_after_fragments() {
let url = "#foo:~:text=start";
let (stripped_url, fragment_directive, result) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result.");
assert_eq!(
result.len(),
1,
"There must be exactly one parsed text fragment."
);
assert_eq!(
stripped_url, "#foo",
"The fragment directive was not removed correctly."
);
assert_eq!(
fragment_directive, "text=start",
"The fragment directive was not extracted correctly."
);
let fragment = result.first().unwrap();
assert!(fragment.prefix().is_none(), "There is no `prefix` token.");
assert_eq!(
fragment
.start()
.as_ref()
.expect("There must be a `start` token.")
.value(),
"start"
);
assert!(fragment.end().is_none(), "There is no `end` token.");
assert!(fragment.suffix().is_none(), "There is no `suffix` token.");
}
/// Ensure that multiple text fragments are parsed correctly.
#[test]
fn test_parse_multiple_text_fragments() {
let url = "#:~:text=prefix-,start,-suffix&text=foo&text=bar,-suffix";
let (_, _, text_directives) = parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result.");
assert_eq!(
text_directives.len(),
3,
"There must be exactly two parsed text fragments."
);
let first_text_directive = &text_directives[0];
assert_eq!(
first_text_directive
.prefix()
.as_ref()
.expect("There must be a `prefix` token.")
.value(),
"prefix"
);
assert_eq!(
first_text_directive
.start()
.as_ref()
.expect("There must be a `start` token.")
.value(),
"start"
);
assert!(
first_text_directive.end().is_none(),
"There is no `end` token."
);
assert_eq!(
first_text_directive
.suffix()
.as_ref()
.expect("There must be a `suffix` token.")
.value(),
"suffix"
);
let second_text_directive = &text_directives[1];
assert!(
second_text_directive.prefix().is_none(),
"There is no `prefix` token."
);
assert_eq!(
second_text_directive
.start()
.as_ref()
.expect("There must be a `start` token.")
.value(),
"foo"
);
assert!(
second_text_directive.end().is_none(),
"There is no `end` token."
);
assert!(
second_text_directive.suffix().is_none(),
"There is no `suffix` token."
);
let third_text_directive = &text_directives[2];
assert!(
third_text_directive.prefix().is_none(),
"There is no `prefix` token."
);
assert_eq!(
third_text_directive
.start()
.as_ref()
.expect("There must be a `start` token.")
.value(),
"bar"
);
assert!(
third_text_directive.end().is_none(),
"There is no `end` token."
);
assert_eq!(
third_text_directive
.suffix()
.as_ref()
.expect("There must be a `suffix` token.")
.value(),
"suffix"
);
}
/// Multiple text directives should be parsed correctly
/// if they are surrounded or separated by unknown directives.
#[test]
fn test_parse_multiple_text_directives_with_unknown_directive_in_between() {
for url in [
"#:~:foo&text=start1&text=start2",
"#:~:text=start1&foo&text=start2",
"#:~:text=start1&text=start2&foo",
] {
let (_, fragment_directive, text_directives) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result.");
assert_eq!(
fragment_directive,
&url[4..],
"The extracted fragment directive string is unsanitized
and should contain the unknown directive."
);
assert_eq!(
text_directives.len(),
2,
"There must be exactly two parsed text fragments."
);
let first_text_directive = &text_directives[0];
assert_eq!(
first_text_directive
.start()
.as_ref()
.expect("There must be a `start` token.")
.value(),
"start1"
);
let second_text_directive = &text_directives[1];
assert_eq!(
second_text_directive
.start()
.as_ref()
.expect("There must be a `start` token.")
.value(),
"start2"
);
}
}
/// Ensures that input that doesn't contain a text fragment does not produce a result.
/// This includes the use of partial identifying tokens necessary for a text fragment
/// (e.g. `:~:` without `text=`, `text=foo` without the `:~:` or multiple occurrences of `:~:`)
/// In these cases, the parser must return `None` to indicate that there are no valid text fragments.
#[test]
fn test_parse_invalid_or_unknown_fragment_directive() {
// there is no fragment directive here, hence the original url should not be updated.
for url in ["#foo", "#foo:", "text=prefix-,start"] {
let text_directives = parse_fragment_directive_and_remove_it_from_hash(&url);
assert!(
text_directives.is_none(),
"The fragment `{}` does not contain a valid or known fragment directive.",
url
);
}
// there is an (invalid) fragment directive present. It needs to be removed from the url.
for (url, url_without_fragment_directive_ref) in [
("#foo:~:", "#foo"),
("#foo:~:bar", "#foo"),
("#:~:text=foo-,bar,-baz:~:text=foo", ""),
] {
let (url_without_fragment_directive, _, _) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("There is a fragment directive which should have been removed.");
assert_eq!(
url_without_fragment_directive, url_without_fragment_directive_ref,
"The fragment directive has not been removed correctly from fragment `{}`.",
url
);
}
}
/// Ensures that ill-formed text directives (but valid fragment directives)
/// (starting correctly with `:~:text=`) are not parsed.
/// Instead `None` must be returned.
/// Test cases include invalid combinations of `prefix`/`suffix`es,
/// additional `,`s, too many `start`/`end` tokens, or empty text fragments.
#[test]
fn test_parse_invalid_text_fragments() {
for url in [
"#:~:text=start,start,start",
"#:~:text=prefix-,prefix-",
"#:~:text=prefix-,-suffix",
"#:~:text=prefix-,start,start,start",
"#:~:text=prefix-,start,start,start,-suffix",
"#:~:text=start,start,start,-suffix",
"#:~:text=prefix-,start,end,-suffix,foo",
"#:~:text=foo,prefix-,start",
"#:~:text=prefix-,,start,",
"#:~:text=,prefix,start",
"#:~:text=",
] {
let (url_without_fragment_directive, _, _) =
parse_fragment_directive_and_remove_it_from_hash(&url).expect("");
assert!(
url_without_fragment_directive.is_empty(),
"The fragment directive `{}` does not contain a valid fragment directive. \
It must be removed from the original url anyway.",
url
);
}
}
/// Ensure that out of multiple text fragments only the invalid ones are ignored
/// while valid text fragments are still returned.
/// Since correct parsing of multiple text fragments as well as
/// several forms of invalid text fragments are already tested in
/// `test_parse_multiple_text_fragments` and `test_parse_invalid_text_fragments()`,
/// it should be enough to test this with only one fragment directive
/// that contains two text fragments, one of them being invalid.
#[test]
fn test_valid_and_invalid_text_directives() {
for url in [
"#:~:text=start&text=,foo,",
"#:~:text=foo,foo,foo&text=start",
] {
let (_, fragment_directive, text_directives) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result.");
assert_eq!(
fragment_directive,
&url[4..],
"The extracted fragment directive string is unsanitized
and should contain invalid text directives."
);
assert_eq!(
text_directives.len(),
1,
"There must be exactly one parsed text fragment."
);
let text_directive = text_directives.first().unwrap();
assert_eq!(
text_directive
.start()
.as_ref()
.expect("There must be a `start` value.")
.value(),
"start",
"The `start` value of the text directive has the wrong value."
);
}
}
/// Ensures that a fragment directive that contains percent-encoded characters
/// is decoded correctly. This explicitly includes characters which are used
/// for identifying text fragments, i.e. `#`, `, `, `&`, `:`, `~` and `-`.
#[test]
fn test_parse_percent_encoding_tokens() {
let url = "#:~:text=prefix%26-,start%20and%2C,end%23,-%26suffix%2D";
let (_, fragment_directive, text_directives) =
parse_fragment_directive_and_remove_it_from_hash(&url)
.expect("The parser must find a result.");
assert_eq!(
fragment_directive,
&url[4..],
"The extracted fragment directive string is unsanitized
and should contain the original and percent-decoded string."
);
let text_directive = text_directives.first().unwrap();
assert_eq!(
text_directive
.prefix()
.as_ref()
.expect("There must be a prefix.")
.value(),
"prefix&",
""
);
assert_eq!(
text_directive
.start()
.as_ref()
.expect("There must be a prefix.")
.value(),
"start and,",
""
);
assert_eq!(
text_directive
.end()
.as_ref()
.expect("There must be a prefix.")
.value(),
"end#",
""
);
assert_eq!(
text_directive
.suffix()
.as_ref()
.expect("There must be a prefix.")
.value(),
"&suffix-",
""
);
}
/// Ensures that a text fragment is created correctly,
/// based on a given combination of tokens.
/// This includes all sorts of combinations of
/// `prefix`, `suffix`, `start` and `end`,
/// als well as values for these tokens which contain
/// characters that need to be encoded because they are
/// identifiers for text fragments
/// (#`, `, `, `&`, `:`, `~` and `-`).
#[test]
fn test_create_fragment_directive() {
for (text_directive, expected_fragment_directive) in [
(
TextDirective::from_parts(
String::new(),
String::from("start"),
String::new(),
String::new(),
)
.unwrap(),
":~:text=start",
),
(
TextDirective::from_parts(
String::new(),
String::from("start"),
String::from("end"),
String::new(),
)
.unwrap(),
":~:text=start,end",
),
(
TextDirective::from_parts(
String::from("prefix"),
String::from("start"),
String::from("end"),
String::new(),
)
.unwrap(),
":~:text=prefix-,start,end",
),
(
TextDirective::from_parts(
String::from("prefix"),
String::from("start"),
String::from("end"),
String::from("suffix"),
)
.unwrap(),
":~:text=prefix-,start,end,-suffix",
),
(
TextDirective::from_parts(
String::new(),
String::from("start"),
String::from("end"),
String::from("suffix"),
)
.unwrap(),
":~:text=start,end,-suffix",
),
(
TextDirective::from_parts(
String::from("prefix"),
String::from("start"),
String::new(),
String::from("suffix"),
)
.unwrap(),
":~:text=prefix-,start,-suffix",
),
(
TextDirective::from_parts(
String::from("prefix-"),
String::from("start and,"),
String::from("&end"),
String::from("#:~:suffix"),
)
.unwrap(),
":~:text=prefix%2D-,start%20and%2C,%26end,-%23%3A%7E%3Asuffix",
),
] {
let fragment_directive = create_fragment_directive_string(&vec![text_directive])
.expect("The given input must produce a valid fragment directive.");
assert_eq!(fragment_directive, expected_fragment_directive);
}
}
/// Ensures that a fragment directive is created correctly if multiple text fragments are given.
/// The resulting fragment must start with `:~:`
/// and each text fragment must be separated using `&text=`.
#[test]
fn test_create_fragment_directive_from_multiple_text_directives() {
let text_directives = vec![
TextDirective::from_parts(
String::new(),
String::from("start1"),
String::new(),
String::new(),
)
.unwrap(),
TextDirective::from_parts(
String::new(),
String::from("start2"),
String::new(),
String::new(),
)
.unwrap(),
TextDirective::from_parts(
String::new(),
String::from("start3"),
String::new(),
String::new(),
)
.unwrap(),
];
let fragment_directive = create_fragment_directive_string(&text_directives)
.expect("The given input must produce a valid fragment directive.");
assert_eq!(
fragment_directive, ":~:text=start1&text=start2&text=start3",
"The created fragment directive is wrong for multiple fragments."
);
}
}