[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>()
    )
}

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