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 display_stdout = state.options.display_output || *result != TestResult::TrOk;
96 let stdout = if display_stdout && stdout.len() > 0 {
97 Some(String::from_utf8_lossy(stdout))
102 TestResult::TrOk => {
103 self.write_event("test", desc.name.as_slice(), "ok", exec_time, stdout, None)
106 TestResult::TrFailed => {
107 self.write_event("test", desc.name.as_slice(), "failed", exec_time, stdout, None)
110 TestResult::TrTimedFail => self.write_event(
112 desc.name.as_slice(),
116 Some(r#""reason": "time limit exceeded""#),
119 TestResult::TrFailedMsg(ref m) => self.write_event(
121 desc.name.as_slice(),
125 Some(&*format!(r#""message": "{}""#, EscapedString(m))),
128 TestResult::TrIgnored => {
129 self.write_event("test", desc.name.as_slice(), "ignored", exec_time, stdout, None)
132 TestResult::TrAllowedFail => self.write_event(
134 desc.name.as_slice(),
141 TestResult::TrBench(ref bs) => {
142 let median = bs.ns_iter_summ.median as usize;
143 let deviation = (bs.ns_iter_summ.max - bs.ns_iter_summ.min) as usize;
145 let mbps = if bs.mb_s == 0 {
148 format!(r#", "mib_per_second": {}"#, bs.mb_s)
152 "{{ \"type\": \"bench\", \
155 \"deviation\": {}{} }}",
156 desc.name, median, deviation, mbps
159 self.writeln_message(&*line)
164 fn write_timeout(&mut self, desc: &TestDesc) -> io::Result<()> {
165 self.writeln_message(&*format!(
166 r#"{{ "type": "test", "event": "timeout", "name": "{}" }}"#,
171 fn write_run_finish(&mut self, state: &ConsoleTestState) -> io::Result<bool> {
172 self.writeln_message(&*format!(
173 "{{ \"type\": \"suite\", \
177 \"allowed_fail\": {}, \
180 \"filtered_out\": {} }}",
181 if state.failed == 0 { "ok" } else { "failed" },
183 state.failed + state.allowed_fail,
190 Ok(state.failed == 0)
194 /// A formatting utility used to print strings with characters in need of escaping.
195 /// Base code taken form `libserialize::json::escape_str`
196 struct EscapedString<S: AsRef<str>>(S);
198 impl<S: AsRef<str>> ::std::fmt::Display for EscapedString<S> {
199 fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
202 for (i, byte) in self.0.as_ref().bytes().enumerate() {
203 let escaped = match byte {
206 b'\x00' => "\\u0000",
207 b'\x01' => "\\u0001",
208 b'\x02' => "\\u0002",
209 b'\x03' => "\\u0003",
210 b'\x04' => "\\u0004",
211 b'\x05' => "\\u0005",
212 b'\x06' => "\\u0006",
213 b'\x07' => "\\u0007",
217 b'\x0b' => "\\u000b",
220 b'\x0e' => "\\u000e",
221 b'\x0f' => "\\u000f",
222 b'\x10' => "\\u0010",
223 b'\x11' => "\\u0011",
224 b'\x12' => "\\u0012",
225 b'\x13' => "\\u0013",
226 b'\x14' => "\\u0014",
227 b'\x15' => "\\u0015",
228 b'\x16' => "\\u0016",
229 b'\x17' => "\\u0017",
230 b'\x18' => "\\u0018",
231 b'\x19' => "\\u0019",
232 b'\x1a' => "\\u001a",
233 b'\x1b' => "\\u001b",
234 b'\x1c' => "\\u001c",
235 b'\x1d' => "\\u001d",
236 b'\x1e' => "\\u001e",
237 b'\x1f' => "\\u001f",
238 b'\x7f' => "\\u007f",
245 f.write_str(&self.0.as_ref()[start..i])?;
248 f.write_str(escaped)?;
253 if start != self.0.as_ref().len() {
254 f.write_str(&self.0.as_ref()[start..])?;