10 test_result::TestResult,
11 console::{ConsoleTestState, OutputLocation},
13 use super::OutputFormatter;
15 pub(crate) struct JsonFormatter<T> {
16 out: OutputLocation<T>,
19 impl<T: Write> JsonFormatter<T> {
20 pub fn new(out: OutputLocation<T>) -> Self {
24 fn writeln_message(&mut self, s: &str) -> io::Result<()> {
25 assert!(!s.contains('\n'));
27 self.out.write_all(s.as_ref())?;
28 self.out.write_all(b"\n")
31 fn write_message(&mut self, s: &str) -> io::Result<()> {
32 assert!(!s.contains('\n'));
34 self.out.write_all(s.as_ref())
42 exec_time: Option<&time::TestExecTime>,
43 stdout: Option<Cow<'_, str>>,
46 self.write_message(&*format!(
47 r#"{{ "type": "{}", "name": "{}", "event": "{}""#,
50 if let Some(exec_time) = exec_time {
51 self.write_message(&*format!(
52 r#", "exec_time": "{}""#,
56 if let Some(stdout) = stdout {
57 self.write_message(&*format!(
58 r#", "stdout": "{}""#,
62 if let Some(extra) = extra {
63 self.write_message(&*format!(
68 self.writeln_message(" }")
72 impl<T: Write> OutputFormatter for JsonFormatter<T> {
73 fn write_run_start(&mut self, test_count: usize) -> io::Result<()> {
74 self.writeln_message(&*format!(
75 r#"{{ "type": "suite", "event": "started", "test_count": {} }}"#,
80 fn write_test_start(&mut self, desc: &TestDesc) -> io::Result<()> {
81 self.writeln_message(&*format!(
82 r#"{{ "type": "test", "event": "started", "name": "{}" }}"#,
91 exec_time: Option<&time::TestExecTime>,
93 state: &ConsoleTestState,
95 let stdout = if (state.options.display_output || *result != TestResult::TrOk) && stdout.len() > 0 {
96 Some(String::from_utf8_lossy(stdout))
101 TestResult::TrOk => {
102 self.write_event("test", desc.name.as_slice(), "ok", exec_time, stdout, None)
105 TestResult::TrFailed => {
106 self.write_event("test", desc.name.as_slice(), "failed", exec_time, stdout, None)
109 TestResult::TrTimedFail => self.write_event(
111 desc.name.as_slice(),
115 Some(r#""reason": "time limit exceeded""#),
118 TestResult::TrFailedMsg(ref m) => self.write_event(
120 desc.name.as_slice(),
124 Some(&*format!(r#""message": "{}""#, EscapedString(m))),
127 TestResult::TrIgnored => {
128 self.write_event("test", desc.name.as_slice(), "ignored", exec_time, stdout, None)
131 TestResult::TrAllowedFail => self.write_event(
133 desc.name.as_slice(),
140 TestResult::TrBench(ref bs) => {
141 let median = bs.ns_iter_summ.median as usize;
142 let deviation = (bs.ns_iter_summ.max - bs.ns_iter_summ.min) as usize;
144 let mbps = if bs.mb_s == 0 {
147 format!(r#", "mib_per_second": {}"#, bs.mb_s)
151 "{{ \"type\": \"bench\", \
154 \"deviation\": {}{} }}",
155 desc.name, median, deviation, mbps
158 self.writeln_message(&*line)
163 fn write_timeout(&mut self, desc: &TestDesc) -> io::Result<()> {
164 self.writeln_message(&*format!(
165 r#"{{ "type": "test", "event": "timeout", "name": "{}" }}"#,
170 fn write_run_finish(&mut self, state: &ConsoleTestState) -> io::Result<bool> {
171 self.writeln_message(&*format!(
172 "{{ \"type\": \"suite\", \
176 \"allowed_fail\": {}, \
179 \"filtered_out\": {} }}",
180 if state.failed == 0 { "ok" } else { "failed" },
182 state.failed + state.allowed_fail,
189 Ok(state.failed == 0)
193 /// A formatting utility used to print strings with characters in need of escaping.
194 /// Base code taken form `libserialize::json::escape_str`
195 struct EscapedString<S: AsRef<str>>(S);
197 impl<S: AsRef<str>> ::std::fmt::Display for EscapedString<S> {
198 fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
201 for (i, byte) in self.0.as_ref().bytes().enumerate() {
202 let escaped = match byte {
205 b'\x00' => "\\u0000",
206 b'\x01' => "\\u0001",
207 b'\x02' => "\\u0002",
208 b'\x03' => "\\u0003",
209 b'\x04' => "\\u0004",
210 b'\x05' => "\\u0005",
211 b'\x06' => "\\u0006",
212 b'\x07' => "\\u0007",
216 b'\x0b' => "\\u000b",
219 b'\x0e' => "\\u000e",
220 b'\x0f' => "\\u000f",
221 b'\x10' => "\\u0010",
222 b'\x11' => "\\u0011",
223 b'\x12' => "\\u0012",
224 b'\x13' => "\\u0013",
225 b'\x14' => "\\u0014",
226 b'\x15' => "\\u0015",
227 b'\x16' => "\\u0016",
228 b'\x17' => "\\u0017",
229 b'\x18' => "\\u0018",
230 b'\x19' => "\\u0019",
231 b'\x1a' => "\\u001a",
232 b'\x1b' => "\\u001b",
233 b'\x1c' => "\\u001c",
234 b'\x1d' => "\\u001d",
235 b'\x1e' => "\\u001e",
236 b'\x1f' => "\\u001f",
237 b'\x7f' => "\\u007f",
244 f.write_str(&self.0.as_ref()[start..i])?;
247 f.write_str(escaped)?;
252 if start != self.0.as_ref().len() {
253 f.write_str(&self.0.as_ref()[start..])?;