libtest: Json format now outputs failed tests' stdouts.

Author: Gilad Naaman

src/libtest/formatters.rs

@@ -77,7 +77,7 @@ impl<T: Write> HumanFormatter<T> {
                 // `stamp` in the rust CI).
                 self.write_plain("\n")?;
             }
-            
+
             self.test_count += 1;
             Ok(())
         } else {
@@ -296,13 +296,39 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
 
     fn write_result(&mut self, desc: &TestDesc, result: &TestResult) -> io::Result<()> {
         let output = match *result {
-            TrOk =>                 format!("\t\t{{ \"test\": \"{}\", \"event\": \"ok\" }}", desc.name),
-            TrFailed =>             format!("\t\t{{ \"test\": \"{}\", \"event\": \"failed\" }}", desc.name),
-            TrFailedMsg(ref m) =>   format!("\t\t{{ \"test\": \"{}\", \"event\": \"failed\", \"extra\": \"{}\" }}", desc.name, m),
-            TrIgnored =>            format!("\t\t{{ \"test\": \"{}\", \"event\": \"ignored\" }}", desc.name),
-            TrAllowedFail =>        format!("\t\t{{ \"test\": \"{}\", \"event\": \"allowed_failure\" }}", desc.name),
-            TrMetrics(ref mm) =>    format!("\t\t{{ \"test\": \"{}\", \"event\": \"metrics\", \"extra\": \"{}\" }}", desc.name, mm.fmt_metrics()),
-            TrBench(ref bs) =>      format!("\t\t{{ \"test\": \"{}\", \"event\": \"bench\", \"extra\": \"{}\" }}", desc.name, fmt_bench_samples(bs)),
+            TrOk => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"ok\" }}", desc.name)
+            },
+
+            TrFailed => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"failed\" }}", desc.name)
+            },
+
+            TrFailedMsg(ref m) => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"failed\", \"extra\": \"{}\" }}",
+                        desc.name,
+                        m)
+            },
+
+            TrIgnored => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"ignored\" }}", desc.name)
+            },
+
+            TrAllowedFail => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"allowed_failure\" }}", desc.name)
+            },
+
+            TrMetrics(ref mm) => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"metrics\", \"extra\": \"{}\" }}",
+                        desc.name,
+                        mm.fmt_metrics())
+            },
+
+            TrBench(ref bs) => {
+                format!("\t\t{{ \"test\": \"{}\", \"event\": \"bench\", \"extra\": \"{}\" }}",
+                        desc.name,
+                        fmt_bench_samples(bs))
+            },
         };
 
         self.write_event(&*output)
@@ -343,10 +369,10 @@ impl<T: Write> OutputFormatter for JsonFormatter<T> {
                     self.write_str(&*format!("\t\t\t\"{}\": \"{}\"", f.name, output))?;
                 }
             }
-           
+
             self.write_str("\n\t\t]\n")?;
         }
-        
+
         self.write_str("\t}\n}\n")?;
 
         Ok(state.failed == 0)

src/libtest/lib.rs

@@ -374,7 +374,7 @@ impl TestOpts {
             logfile: None,
             nocapture: false,
             color: AutoColor,
-            format: OutputFormat,
+            format: OutputFormat::Pretty,
             test_threads: None,
             skip: vec![],
             options: Options::new(),
@@ -400,8 +400,8 @@ fn optgroups() -> getopts::Options {
                                      in parallel", "n_threads")
         .optmulti("", "skip", "Skip tests whose names contain FILTER (this flag can \
                                be used multiple times)","FILTER")
-        .optflag("q", "quiet", "Display one character per test instead of one line.\
-                                Equivalent to --format=terse")
+        .optflag("q", "quiet", "Display one character per test instead of one line. \
+                                Alias to --format=terse")
         .optflag("", "exact", "Exactly match filters rather than by substring")
         .optopt("", "color", "Configure coloring of output:
             auto   = colorize if stdout is a tty and tests are run on serially (default);
@@ -697,7 +697,7 @@ pub fn list_tests_console(opts: &TestOpts, tests: Vec<TestDescAndFn>) -> io::Res
         None => Raw(io::stdout()),
         Some(t) => Pretty(t),
     };
-    
+
     let quiet = opts.format == OutputFormat::Terse;
     let mut out = HumanFormatter::new(output, use_color(opts), quiet);
     let mut st = ConsoleTestState::new(opts)?;