3 pub(crate) struct JsonFormatter<T> {
4 out: OutputLocation<T>,
7 impl<T: Write> JsonFormatter<T> {
8 pub fn new(out: OutputLocation<T>) -> Self {
12 fn writeln_message(&mut self, s: &str) -> io::Result<()> {
13 assert!(!s.contains('\n'));
15 self.out.write_all(s.as_ref())?;
16 self.out.write_all(b"\n")
19 fn write_message(&mut self, s: &str) -> io::Result<()> {
20 assert!(!s.contains('\n'));
22 self.out.write_all(s.as_ref())
30 exec_time: Option<&TestExecTime>,
31 stdout: Option<Cow<'_, str>>,
34 self.write_message(&*format!(
35 r#"{{ "type": "{}", "name": "{}", "event": "{}""#,
38 if let Some(exec_time) = exec_time {
39 self.write_message(&*format!(
40 r#", "exec_time": "{}""#,
44 if let Some(stdout) = stdout {
45 self.write_message(&*format!(
46 r#", "stdout": "{}""#,
50 if let Some(extra) = extra {
51 self.write_message(&*format!(
56 self.writeln_message(" }")
60 impl<T: Write> OutputFormatter for JsonFormatter<T> {
61 fn write_run_start(&mut self, test_count: usize) -> io::Result<()> {
62 self.writeln_message(&*format!(
63 r#"{{ "type": "suite", "event": "started", "test_count": {} }}"#,
68 fn write_test_start(&mut self, desc: &TestDesc) -> io::Result<()> {
69 self.writeln_message(&*format!(
70 r#"{{ "type": "test", "event": "started", "name": "{}" }}"#,
79 exec_time: Option<&TestExecTime>,
81 state: &ConsoleTestState,
83 let stdout = if (state.options.display_output || *result != TrOk) && stdout.len() > 0 {
84 Some(String::from_utf8_lossy(stdout))
90 self.write_event("test", desc.name.as_slice(), "ok", exec_time, stdout, None)
94 self.write_event("test", desc.name.as_slice(), "failed", exec_time, stdout, None)
97 TrFailedMsg(ref m) => self.write_event(
103 Some(&*format!(r#""message": "{}""#, EscapedString(m))),
107 self.write_event("test", desc.name.as_slice(), "ignored", exec_time, stdout, None)
110 TrAllowedFail => self.write_event(
112 desc.name.as_slice(),
120 let median = bs.ns_iter_summ.median as usize;
121 let deviation = (bs.ns_iter_summ.max - bs.ns_iter_summ.min) as usize;
123 let mbps = if bs.mb_s == 0 {
126 format!(r#", "mib_per_second": {}"#, bs.mb_s)
130 "{{ \"type\": \"bench\", \
133 \"deviation\": {}{} }}",
134 desc.name, median, deviation, mbps
137 self.writeln_message(&*line)
142 fn write_timeout(&mut self, desc: &TestDesc) -> io::Result<()> {
143 self.writeln_message(&*format!(
144 r#"{{ "type": "test", "event": "timeout", "name": "{}" }}"#,
149 fn write_run_finish(&mut self, state: &ConsoleTestState) -> io::Result<bool> {
150 self.writeln_message(&*format!(
151 "{{ \"type\": \"suite\", \
155 \"allowed_fail\": {}, \
158 \"filtered_out\": {} }}",
159 if state.failed == 0 { "ok" } else { "failed" },
161 state.failed + state.allowed_fail,
168 Ok(state.failed == 0)
172 /// A formatting utility used to print strings with characters in need of escaping.
173 /// Base code taken form `libserialize::json::escape_str`
174 struct EscapedString<S: AsRef<str>>(S);
176 impl<S: AsRef<str>> ::std::fmt::Display for EscapedString<S> {
177 fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
180 for (i, byte) in self.0.as_ref().bytes().enumerate() {
181 let escaped = match byte {
184 b'\x00' => "\\u0000",
185 b'\x01' => "\\u0001",
186 b'\x02' => "\\u0002",
187 b'\x03' => "\\u0003",
188 b'\x04' => "\\u0004",
189 b'\x05' => "\\u0005",
190 b'\x06' => "\\u0006",
191 b'\x07' => "\\u0007",
195 b'\x0b' => "\\u000b",
198 b'\x0e' => "\\u000e",
199 b'\x0f' => "\\u000f",
200 b'\x10' => "\\u0010",
201 b'\x11' => "\\u0011",
202 b'\x12' => "\\u0012",
203 b'\x13' => "\\u0013",
204 b'\x14' => "\\u0014",
205 b'\x15' => "\\u0015",
206 b'\x16' => "\\u0016",
207 b'\x17' => "\\u0017",
208 b'\x18' => "\\u0018",
209 b'\x19' => "\\u0019",
210 b'\x1a' => "\\u001a",
211 b'\x1b' => "\\u001b",
212 b'\x1c' => "\\u001c",
213 b'\x1d' => "\\u001d",
214 b'\x1e' => "\\u001e",
215 b'\x1f' => "\\u001f",
216 b'\x7f' => "\\u007f",
223 f.write_str(&self.0.as_ref()[start..i])?;
226 f.write_str(escaped)?;
231 if start != self.0.as_ref().len() {
232 f.write_str(&self.0.as_ref()[start..])?;