[tablify] / src / lib.rs

use std::collections::{HashMap, HashSet};
use std::io::BufRead;
use std::iter::Iterator;

const HEADER: &str = "<!DOCTYPE html>
<html>
<head>
  <meta charset=\"utf-8\">
  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">
  <style>
    /* h/t https://wabain.github.io/2019/10/13/css-rotated-table-header.html */
    th, td { white-space: nowrap; }
    th { text-align: left; font-weight: normal; }
    table { border-collapse: collapse }
    tr.key > th { height: 8em; vertical-align: bottom; line-height: 1 }
    tr.key > th > div { width: 1em; }
    tr.key > th > div > div { width: 5em; transform-origin: bottom left; transform: translateX(1em) rotate(-65deg) }
    td { border: thin solid gray; }
    td.numeric { text-align: right; }
    td.yes { border: thin solid gray; background-color: gray; }
    td.spacer { border: none; }
    /* h/t https://stackoverflow.com/questions/5687035/css-bolding-some-text-without-changing-its-containers-size/46452396#46452396 */
    .highlight { text-shadow: -0.06ex 0 black, 0.06ex 0 black; }
    img { height: 1.2em; }
  </style>
  <script>
    function highlight(id)       { const e = document.getElementById(id); if (e) { e.classList.add(   \"highlight\"); } }
    function clear_highlight(id) { const e = document.getElementById(id); if (e) { e.classList.remove(\"highlight\"); } }
    function h2(a, b)  {       highlight(a);       highlight(b); }
    function ch2(a, b) { clear_highlight(a); clear_highlight(b); }
  </script>
</head>
<body>
  <table>
    <tbody>
";
const FOOTER: &str = "    </tbody>
  </table>
</body>
</html>";

#[derive(Debug, PartialEq, Eq, Hash)]
struct Entry {
    col: String,
    instance: Option<String>,
}
impl From<&str> for Entry {
    fn from(value: &str) -> Entry {
        match value.split_once(':') {
            None => Entry {
                col: String::from(value),
                instance: None,
            },
            Some((col, instance)) => Entry {
                col: String::from(col.trim()),
                instance: Some(String::from(instance.trim())),
            },
        }
    }
}

#[derive(Debug, PartialEq, Eq)]
struct RowInput {
    label: String,
    entries: Vec<Entry>,
}

struct Reader<Input: Iterator<Item = Result<String, std::io::Error>>> {
    input: std::iter::Enumerate<Input>,
    row: Option<RowInput>,
}
impl<Input: Iterator<Item = Result<String, std::io::Error>>> Reader<Input> {
    fn new(input: Input) -> Self {
        Self {
            input: input.enumerate(),
            row: None,
        }
    }
}
impl<Input: Iterator<Item = Result<String, std::io::Error>>> Iterator for Reader<Input> {
    type Item = Result<RowInput, std::io::Error>;
    fn next(&mut self) -> Option<Self::Item> {
        loop {
            match self
                .input
                .next()
                .map(|(n, r)| (n, r.map(|line| String::from(line.trim_end()))))
            {
                None => return Ok(std::mem::take(&mut self.row)).transpose(),
                Some((_, Err(e))) => return Some(Err(e)),
                Some((_, Ok(line))) if line.is_empty() && self.row.is_some() => {
                    return Ok(std::mem::take(&mut self.row)).transpose()
                }
                Some((_, Ok(line))) if line.is_empty() => {}
                Some((n, Ok(line))) if line.starts_with(' ') => match &mut self.row {
                    None => {
                        return Some(Err(std::io::Error::other(format!(
                            "{}: Entry with no header",
                            n + 1
                        ))))
                    }
                    Some(ref mut row) => row.entries.push(Entry::from(line.trim())),
                },
                Some((_, Ok(line))) => {
                    let prev = std::mem::take(&mut self.row);
                    self.row = Some(RowInput {
                        label: line,
                        entries: vec![],
                    });
                    if prev.is_some() {
                        return Ok(prev).transpose();
                    }
                }
            }
        }
    }
}

fn read_rows(input: impl std::io::Read) -> impl Iterator<Item = Result<RowInput, std::io::Error>> {
    Reader::new(std::io::BufReader::new(input).lines())
}

fn column_counts(rows: &[RowInput]) -> Vec<(usize, String)> {
    let mut counts: Vec<_> = rows
        .iter()
        .flat_map(|r| {
            r.entries
                .iter()
                .map(|e| &e.col)
                .collect::<HashSet<_>>()
                .into_iter()
        })
        .fold(HashMap::new(), |mut cs, col| {
            cs.entry(String::from(col))
                .and_modify(|n| *n += 1)
                .or_insert(1);
            cs
        })
        .into_iter()
        .map(|(col, n)| (n, col))
        .collect();
    counts.sort();
    counts
}
fn column_order(rows: &[RowInput]) -> Vec<String> {
    column_counts(rows)
        .into_iter()
        .map(|(_, col)| col)
        .collect()
}

fn render_instance(entry: &Entry) -> String {
    match &entry.instance {
        None => String::from("✓ "),
        Some(instance) => String::from(instance) + " ",
    }
}

fn render_cell(col: &str, row: &RowInput) -> String {
    // TODO: Escape HTML special characters
    let entries: Vec<&Entry> = row.entries.iter().filter(|e| e.col == col).collect();
    let class = if entries.is_empty() { "" } else { "yes" };
    let all_empty = entries.iter().all(|e| e.instance.is_none());
    let contents = if entries.is_empty() || (all_empty && entries.len() == 1) {
        String::new()
    } else if all_empty {
        format!("{}", entries.len())
    } else {
        entries
            .iter()
            .map(|i| render_instance(i))
            .collect::<String>()
    };
    format!("<td class=\"{class}\">{}</td>", contents.trim())
}

fn render_row(columns: &[String], row: &RowInput) -> String {
    // This is O(n^2) & doesn't need to be
    // TODO: Escape HTML special characters
    format!(
        "<tr><th>{}</th>{}</tr>\n",
        row.label,
        &columns
            .iter()
            .map(|col| render_cell(col, row))
            .collect::<String>()
    )
}

fn render_column_headers(columns: &[String]) -> String {
    // TODO: Escape HTML special characters
    String::from("<th></th>")
        + &columns
            .iter()
            .map(|c| format!("<th>{c}</th>"))
            .collect::<String>()
        + "\n"
}

/// # Errors
///
/// Will return `Err` if
///   * there's an i/o error while reading `input`
///   * the log has invalid syntax:
///     * an indented line with no preceding non-indented line
pub fn tablify(input: impl std::io::Read) -> Result<String, std::io::Error> {
    let rows = read_rows(input).collect::<Result<Vec<_>, _>>()?;
    let columns = column_order(&rows);
    Ok(String::from(HEADER)
        + &render_column_headers(&columns)
        + &rows
            .into_iter()
            .map(|r| render_row(&columns, &r))
            .collect::<String>()
        + FOOTER)
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_parse_entry() {
        assert_eq!(
            Entry::from("foo"),
            Entry {
                col: String::from("foo"),
                instance: None
            }
        );
        assert_eq!(
            Entry::from("foo:bar"),
            Entry {
                col: String::from("foo"),
                instance: Some(String::from("bar"))
            }
        );
        assert_eq!(
            Entry::from("foo: bar"),
            Entry {
                col: String::from("foo"),
                instance: Some(String::from("bar"))
            }
        );
    }

    #[test]
    fn test_read_rows() {
        assert_eq!(
            read_rows(&b"foo"[..]).flatten().collect::<Vec<_>>(),
            vec![RowInput {
                label: String::from("foo"),
                entries: vec![]
            }]
        );
        assert_eq!(
            read_rows(&b"bar"[..]).flatten().collect::<Vec<_>>(),
            vec![RowInput {
                label: String::from("bar"),
                entries: vec![]
            }]
        );
        assert_eq!(
            read_rows(&b"foo\nbar\n"[..]).flatten().collect::<Vec<_>>(),
            vec![
                RowInput {
                    label: String::from("foo"),
                    entries: vec![]
                },
                RowInput {
                    label: String::from("bar"),
                    entries: vec![]
                }
            ]
        );
        assert_eq!(
            read_rows(&b"foo\n bar\n"[..]).flatten().collect::<Vec<_>>(),
            vec![RowInput {
                label: String::from("foo"),
                entries: vec![Entry::from("bar")]
            }]
        );
        assert_eq!(
            read_rows(&b"foo\n bar\n baz\n"[..])
                .flatten()
                .collect::<Vec<_>>(),
            vec![RowInput {
                label: String::from("foo"),
                entries: vec![Entry::from("bar"), Entry::from("baz")]
            }]
        );
        assert_eq!(
            read_rows(&b"foo\n\nbar\n"[..])
                .flatten()
                .collect::<Vec<_>>(),
            vec![
                RowInput {
                    label: String::from("foo"),
                    entries: vec![]
                },
                RowInput {
                    label: String::from("bar"),
                    entries: vec![]
                }
            ]
        );
        assert_eq!(
            read_rows(&b"foo\n \nbar\n"[..])
                .flatten()
                .collect::<Vec<_>>(),
            vec![
                RowInput {
                    label: String::from("foo"),
                    entries: vec![]
                },
                RowInput {
                    label: String::from("bar"),
                    entries: vec![]
                }
            ]
        );
        assert_eq!(
            read_rows(&b"foo  \n bar  \n"[..])
                .flatten()
                .collect::<Vec<_>>(),
            vec![RowInput {
                label: String::from("foo"),
                entries: vec![Entry::from("bar")]
            }]
        );

        let bad = read_rows(&b" foo"[..]).next().unwrap();
        assert!(bad.is_err());
        assert!(format!("{bad:?}").contains("1: Entry with no header"));

        let bad2 = read_rows(&b"foo\n\n bar"[..]).nth(1).unwrap();
        assert!(bad2.is_err());
        assert!(format!("{bad2:?}").contains("3: Entry with no header"));
    }

    #[test]
    fn test_column_counts() {
        assert_eq!(
            column_counts(
                &read_rows(&b"foo\n bar\n baz\n"[..])
                    .collect::<Result<Vec<_>, _>>()
                    .unwrap()
            ),
            vec![(1, String::from("bar")), (1, String::from("baz"))]
        );
        assert_eq!(
            column_counts(
                &read_rows(&b"foo\n bar\n baz\nquux\n baz"[..])
                    .collect::<Result<Vec<_>, _>>()
                    .unwrap()
            ),
            vec![(1, String::from("bar")), (2, String::from("baz"))]
        );
        assert_eq!(
            column_counts(
                &read_rows(&b"foo\n bar\n bar\n baz\n bar\nquux\n baz"[..])
                    .collect::<Result<Vec<_>, _>>()
                    .unwrap()
            ),
            vec![(1, String::from("bar")), (2, String::from("baz"))]
        );
        assert_eq!(
            column_counts(
                &read_rows(&b"foo\n bar: 1\n bar: 2\n baz\n bar\nquux\n baz"[..])
                    .collect::<Result<Vec<_>, _>>()
                    .unwrap()
            ),
            vec![(1, String::from("bar")), (2, String::from("baz"))]
        );
    }

    #[test]
    fn test_render_cell() {
        assert_eq!(
            render_cell(
                "foo",
                &RowInput {
                    label: String::from("nope"),
                    entries: vec![]
                }
            ),
            String::from("<td class=\"\"></td>")
        );
        assert_eq!(
            render_cell(
                "foo",
                &RowInput {
                    label: String::from("nope"),
                    entries: vec![Entry::from("bar")]
                }
            ),
            String::from("<td class=\"\"></td>")
        );
        assert_eq!(
            render_cell(
                "foo",
                &RowInput {
                    label: String::from("nope"),
                    entries: vec![Entry::from("foo")]
                }
            ),
            String::from("<td class=\"yes\"></td>")
        );
        assert_eq!(
            render_cell(
                "foo",
                &RowInput {
                    label: String::from("nope"),
                    entries: vec![Entry::from("foo"), Entry::from("foo")]
                }
            ),
            String::from("<td class=\"yes\">2</td>")
        );
        assert_eq!(
            render_cell(
                "foo",
                &RowInput {
                    label: String::from("nope"),
                    entries: vec![Entry::from("foo: 5"), Entry::from("foo: 10")]
                }
            ),
            String::from("<td class=\"yes\">5 10</td>")
        );
        assert_eq!(
            render_cell(
                "foo",
                &RowInput {
                    label: String::from("nope"),
                    entries: vec![Entry::from("foo: 5"), Entry::from("foo")]
                }
            ),
            String::from("<td class=\"yes\">5 ✓</td>")
        );
    }
}
Commit	Line	Data
397ef957	1	use std::collections::{HashMap, HashSet};
9dfa98b7	2	use std::io::BufRead;
75bb888a SW	3	use std::iter::Iterator;
75bb888a SW	4
cc2378d5 SW	5	const HEADER: &str = "<!DOCTYPE html>
	6	<html>
	7	<head>
	8	<meta charset=\"utf-8\">
	9	<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">
	10	<style>
	11	/* h/t https://wabain.github.io/2019/10/13/css-rotated-table-header.html */
	12	th, td { white-space: nowrap; }
	13	th { text-align: left; font-weight: normal; }
	14	table { border-collapse: collapse }
	15	tr.key > th { height: 8em; vertical-align: bottom; line-height: 1 }
	16	tr.key > th > div { width: 1em; }
	17	tr.key > th > div > div { width: 5em; transform-origin: bottom left; transform: translateX(1em) rotate(-65deg) }
	18	td { border: thin solid gray; }
	19	td.numeric { text-align: right; }
	20	td.yes { border: thin solid gray; background-color: gray; }
	21	td.spacer { border: none; }
	22	/* h/t https://stackoverflow.com/questions/5687035/css-bolding-some-text-without-changing-its-containers-size/46452396#46452396 */
	23	.highlight { text-shadow: -0.06ex 0 black, 0.06ex 0 black; }
	24	img { height: 1.2em; }
	25	</style>
	26	<script>
	27	function highlight(id) { const e = document.getElementById(id); if (e) { e.classList.add( \"highlight\"); } }
	28	function clear_highlight(id) { const e = document.getElementById(id); if (e) { e.classList.remove(\"highlight\"); } }
	29	function h2(a, b) { highlight(a); highlight(b); }
	30	function ch2(a, b) { clear_highlight(a); clear_highlight(b); }
	31	</script>
	32	</head>
	33	<body>
	34	<table>
76638ea1 SW	35	<tbody>
76638ea1 SW	36	";
cc2378d5 SW	37	const FOOTER: &str = " </tbody>
	38	</table>
	39	</body>
	40	</html>";
	41
14e9852b	42	#[derive(Debug, PartialEq, Eq, Hash)]
e8657dff SW	43	struct Entry {
e8657dff SW	44	col: String,
b8907770	45	instance: Option<String>,
e8657dff SW	46	}
	47	impl From<&str> for Entry {
	48	fn from(value: &str) -> Entry {
b8907770 SW	49	match value.split_once(':') {
	50	None => Entry {
	51	col: String::from(value),
	52	instance: None,
	53	},
	54	Some((col, instance)) => Entry {
0d999bc3 SW	55	col: String::from(col.trim()),
0d999bc3 SW	56	instance: Some(String::from(instance.trim())),
b8907770	57	},
e8657dff SW	58	}
	59	}
	60	}
14e9852b	61
75bb888a SW	62	#[derive(Debug, PartialEq, Eq)]
	63	struct RowInput {
	64	label: String,
14e9852b	65	entries: Vec<Entry>,
75bb888a SW	66	}
75bb888a SW	67
201b9ef3	68	struct Reader<Input: Iterator<Item = Result<String, std::io::Error>>> {
8110b492	69	input: std::iter::Enumerate<Input>,
201b9ef3 SW	70	row: Option<RowInput>,
	71	}
	72	impl<Input: Iterator<Item = Result<String, std::io::Error>>> Reader<Input> {
201b9ef3	73	fn new(input: Input) -> Self {
8110b492 SW	74	Self {
	75	input: input.enumerate(),
	76	row: None,
	77	}
201b9ef3 SW	78	}
	79	}
	80	impl<Input: Iterator<Item = Result<String, std::io::Error>>> Iterator for Reader<Input> {
	81	type Item = Result<RowInput, std::io::Error>;
	82	fn next(&mut self) -> Option<Self::Item> {
	83	loop {
1f6bd845 SW	84	match self
	85	.input
	86	.next()
8110b492	87	.map(\|(n, r)\| (n, r.map(\|line\| String::from(line.trim_end()))))
1f6bd845	88	{
201b9ef3	89	None => return Ok(std::mem::take(&mut self.row)).transpose(),
8110b492 SW	90	Some((_, Err(e))) => return Some(Err(e)),
8110b492 SW	91	Some((_, Ok(line))) if line.is_empty() && self.row.is_some() => {
201b9ef3 SW	92	return Ok(std::mem::take(&mut self.row)).transpose()
201b9ef3 SW	93	}
8110b492 SW	94	Some((_, Ok(line))) if line.is_empty() => {}
	95	Some((n, Ok(line))) if line.starts_with(' ') => match &mut self.row {
	96	None => {
	97	return Some(Err(std::io::Error::other(format!(
	98	"{}: Entry with no header",
	99	n + 1
	100	))))
	101	}
e8657dff	102	Some(ref mut row) => row.entries.push(Entry::from(line.trim())),
201b9ef3	103	},
8110b492	104	Some((_, Ok(line))) => {
201b9ef3 SW	105	let prev = std::mem::take(&mut self.row);
	106	self.row = Some(RowInput {
	107	label: line,
	108	entries: vec![],
	109	});
	110	if prev.is_some() {
	111	return Ok(prev).transpose();
	112	}
	113	}
	114	}
	115	}
	116	}
	117	}
	118
201b9ef3 SW	119	fn read_rows(input: impl std::io::Read) -> impl Iterator<Item = Result<RowInput, std::io::Error>> {
201b9ef3 SW	120	Reader::new(std::io::BufReader::new(input).lines())
75bb888a SW	121	}
75bb888a SW	122
58b5f36d SW	123	fn column_counts(rows: &[RowInput]) -> Vec<(usize, String)> {
	124	let mut counts: Vec<_> = rows
	125	.iter()
b8907770 SW	126	.flat_map(\|r\| {
	127	r.entries
	128	.iter()
	129	.map(\|e\| &e.col)
	130	.collect::<HashSet<_>>()
	131	.into_iter()
	132	})
	133	.fold(HashMap::new(), \|mut cs, col\| {
	134	cs.entry(String::from(col))
58b5f36d	135	.and_modify(\|n\| *n += 1)
f272e502	136	.or_insert(1);
58b5f36d	137	cs
f272e502	138	})
58b5f36d SW	139	.into_iter()
	140	.map(\|(col, n)\| (n, col))
	141	.collect();
	142	counts.sort();
	143	counts
f272e502	144	}
d22b2e05 SW	145	fn column_order(rows: &[RowInput]) -> Vec<String> {
	146	column_counts(rows)
	147	.into_iter()
	148	.map(\|(_, col)\| col)
	149	.collect()
	150	}
f272e502	151
de408c29 SW	152	fn render_instance(entry: &Entry) -> String {
	153	match &entry.instance {
	154	None => String::from("✓ "),
	155	Some(instance) => String::from(instance) + " ",
	156	}
	157	}
	158
	159	fn render_cell(col: &str, row: &RowInput) -> String {
	160	// TODO: Escape HTML special characters
	161	let entries: Vec<&Entry> = row.entries.iter().filter(\|e\| e.col == col).collect();
	162	let class = if entries.is_empty() { "" } else { "yes" };
	163	let all_empty = entries.iter().all(\|e\| e.instance.is_none());
	164	let contents = if entries.is_empty() \|\| (all_empty && entries.len() == 1) {
	165	String::new()
	166	} else if all_empty {
	167	format!("{}", entries.len())
	168	} else {
	169	entries
	170	.iter()
	171	.map(\|i\| render_instance(i))
	172	.collect::<String>()
	173	};
	174	format!("<td class=\"{class}\">{}</td>", contents.trim())
	175	}
	176
	177	fn render_row(columns: &[String], row: &RowInput) -> String {
	178	// This is O(n^2) & doesn't need to be
	179	// TODO: Escape HTML special characters
	180	format!(
	181	"<tr><th>{}</th>{}</tr>\n",
	182	row.label,
	183	&columns
	184	.iter()
	185	.map(\|col\| render_cell(col, row))
	186	.collect::<String>()
	187	)
	188	}
	189
76638ea1 SW	190	fn render_column_headers(columns: &[String]) -> String {
	191	// TODO: Escape HTML special characters
	192	String::from("<th></th>")
	193	+ &columns
	194	.iter()
	195	.map(\|c\| format!("<th>{c}</th>"))
	196	.collect::<String>()
	197	+ "\n"
	198	}
	199
4b99fb70 SW	200	/// # Errors
	201	///
	202	/// Will return `Err` if
	203	/// * there's an i/o error while reading `input`
	204	/// * the log has invalid syntax:
	205	/// * an indented line with no preceding non-indented line
	206	pub fn tablify(input: impl std::io::Read) -> Result<String, std::io::Error> {
	207	let rows = read_rows(input).collect::<Result<Vec<_>, _>>()?;
de408c29 SW	208	let columns = column_order(&rows);
de408c29 SW	209	Ok(String::from(HEADER)
76638ea1	210	+ &render_column_headers(&columns)
de408c29 SW	211	+ &rows
	212	.into_iter()
	213	.map(\|r\| render_row(&columns, &r))
	214	.collect::<String>()
	215	+ FOOTER)
ece97615	216	}
75bb888a SW	217
	218	#[cfg(test)]
	219	mod tests {
	220	use super::*;
	221
b8907770 SW	222	#[test]
	223	fn test_parse_entry() {
	224	assert_eq!(
	225	Entry::from("foo"),
	226	Entry {
	227	col: String::from("foo"),
	228	instance: None
	229	}
	230	);
	231	assert_eq!(
	232	Entry::from("foo:bar"),
	233	Entry {
	234	col: String::from("foo"),
	235	instance: Some(String::from("bar"))
	236	}
	237	);
0d999bc3 SW	238	assert_eq!(
	239	Entry::from("foo: bar"),
	240	Entry {
	241	col: String::from("foo"),
	242	instance: Some(String::from("bar"))
	243	}
	244	);
b8907770 SW	245	}
b8907770 SW	246
75bb888a SW	247	#[test]
	248	fn test_read_rows() {
	249	assert_eq!(
201b9ef3	250	read_rows(&b"foo"[..]).flatten().collect::<Vec<_>>(),
75bb888a SW	251	vec![RowInput {
	252	label: String::from("foo"),
	253	entries: vec![]
	254	}]
	255	);
9dfa98b7	256	assert_eq!(
201b9ef3	257	read_rows(&b"bar"[..]).flatten().collect::<Vec<_>>(),
9dfa98b7 SW	258	vec![RowInput {
	259	label: String::from("bar"),
	260	entries: vec![]
	261	}]
	262	);
2aa9ef94	263	assert_eq!(
201b9ef3	264	read_rows(&b"foo\nbar\n"[..]).flatten().collect::<Vec<_>>(),
2aa9ef94 SW	265	vec![
	266	RowInput {
	267	label: String::from("foo"),
	268	entries: vec![]
	269	},
	270	RowInput {
	271	label: String::from("bar"),
	272	entries: vec![]
	273	}
	274	]
	275	);
201b9ef3 SW	276	assert_eq!(
	277	read_rows(&b"foo\n bar\n"[..]).flatten().collect::<Vec<_>>(),
	278	vec![RowInput {
	279	label: String::from("foo"),
e8657dff	280	entries: vec![Entry::from("bar")]
201b9ef3 SW	281	}]
	282	);
	283	assert_eq!(
	284	read_rows(&b"foo\n bar\n baz\n"[..])
	285	.flatten()
	286	.collect::<Vec<_>>(),
	287	vec![RowInput {
	288	label: String::from("foo"),
e8657dff	289	entries: vec![Entry::from("bar"), Entry::from("baz")]
201b9ef3 SW	290	}]
	291	);
	292	assert_eq!(
	293	read_rows(&b"foo\n\nbar\n"[..])
	294	.flatten()
	295	.collect::<Vec<_>>(),
	296	vec![
	297	RowInput {
	298	label: String::from("foo"),
	299	entries: vec![]
	300	},
	301	RowInput {
	302	label: String::from("bar"),
	303	entries: vec![]
	304	}
	305	]
	306	);
1f6bd845 SW	307	assert_eq!(
	308	read_rows(&b"foo\n \nbar\n"[..])
	309	.flatten()
	310	.collect::<Vec<_>>(),
	311	vec![
	312	RowInput {
	313	label: String::from("foo"),
	314	entries: vec![]
	315	},
	316	RowInput {
	317	label: String::from("bar"),
	318	entries: vec![]
	319	}
	320	]
	321	);
	322	assert_eq!(
	323	read_rows(&b"foo \n bar \n"[..])
	324	.flatten()
	325	.collect::<Vec<_>>(),
	326	vec![RowInput {
	327	label: String::from("foo"),
e8657dff	328	entries: vec![Entry::from("bar")]
1f6bd845 SW	329	}]
1f6bd845 SW	330	);
201b9ef3 SW	331
	332	let bad = read_rows(&b" foo"[..]).next().unwrap();
	333	assert!(bad.is_err());
8110b492	334	assert!(format!("{bad:?}").contains("1: Entry with no header"));
201b9ef3 SW	335
	336	let bad2 = read_rows(&b"foo\n\n bar"[..]).nth(1).unwrap();
	337	assert!(bad2.is_err());
8110b492	338	assert!(format!("{bad2:?}").contains("3: Entry with no header"));
75bb888a	339	}
f272e502 SW	340
	341	#[test]
	342	fn test_column_counts() {
	343	assert_eq!(
	344	column_counts(
	345	&read_rows(&b"foo\n bar\n baz\n"[..])
	346	.collect::<Result<Vec<_>, _>>()
	347	.unwrap()
	348	),
58b5f36d	349	vec![(1, String::from("bar")), (1, String::from("baz"))]
f272e502 SW	350	);
	351	assert_eq!(
	352	column_counts(
	353	&read_rows(&b"foo\n bar\n baz\nquux\n baz"[..])
	354	.collect::<Result<Vec<_>, _>>()
	355	.unwrap()
	356	),
58b5f36d	357	vec![(1, String::from("bar")), (2, String::from("baz"))]
f272e502	358	);
397ef957 SW	359	assert_eq!(
	360	column_counts(
	361	&read_rows(&b"foo\n bar\n bar\n baz\n bar\nquux\n baz"[..])
	362	.collect::<Result<Vec<_>, _>>()
	363	.unwrap()
	364	),
58b5f36d	365	vec![(1, String::from("bar")), (2, String::from("baz"))]
397ef957	366	);
b8907770 SW	367	assert_eq!(
	368	column_counts(
	369	&read_rows(&b"foo\n bar: 1\n bar: 2\n baz\n bar\nquux\n baz"[..])
	370	.collect::<Result<Vec<_>, _>>()
	371	.unwrap()
	372	),
	373	vec![(1, String::from("bar")), (2, String::from("baz"))]
	374	);
f272e502	375	}
de408c29 SW	376
	377	#[test]
	378	fn test_render_cell() {
	379	assert_eq!(
	380	render_cell(
	381	"foo",
	382	&RowInput {
	383	label: String::from("nope"),
	384	entries: vec![]
	385	}
	386	),
	387	String::from("<td class=\"\"></td>")
	388	);
	389	assert_eq!(
	390	render_cell(
	391	"foo",
	392	&RowInput {
	393	label: String::from("nope"),
	394	entries: vec![Entry::from("bar")]
	395	}
	396	),
	397	String::from("<td class=\"\"></td>")
	398	);
	399	assert_eq!(
	400	render_cell(
	401	"foo",
	402	&RowInput {
	403	label: String::from("nope"),
	404	entries: vec![Entry::from("foo")]
	405	}
	406	),
	407	String::from("<td class=\"yes\"></td>")
	408	);
	409	assert_eq!(
	410	render_cell(
	411	"foo",
	412	&RowInput {
	413	label: String::from("nope"),
	414	entries: vec![Entry::from("foo"), Entry::from("foo")]
	415	}
	416	),
	417	String::from("<td class=\"yes\">2</td>")
	418	);
	419	assert_eq!(
	420	render_cell(
	421	"foo",
	422	&RowInput {
	423	label: String::from("nope"),
	424	entries: vec![Entry::from("foo: 5"), Entry::from("foo: 10")]
	425	}
	426	),
	427	String::from("<td class=\"yes\">5 10</td>")
	428	);
	429	assert_eq!(
	430	render_cell(
	431	"foo",
	432	&RowInput {
	433	label: String::from("nope"),
	434	entries: vec![Entry::from("foo: 5"), Entry::from("foo")]
	435	}
	436	),
	437	String::from("<td class=\"yes\">5 ✓</td>")
	438	);
	439	}
75bb888a	440	}