feat(test): format user code output (#14271)

This commit changes "deno test" to better denote user output coming
from test cases.

This is done by printing "---- output ----" and "---- output end ----"
markers if an output is produced. The output from "console" and
"Deno.core.print" is captured, as well as direct writes to "Deno.stdout"
and "Deno.stderr".

To achieve that new APIs were added to "deno_core" crate, that allow
to replace an existing resource with a different one (while keeping resource
ids intact). Resources for stdout and stderr are replaced by pipes.

Co-authored-by: David Sherret <dsherret@gmail.com>

1 files changed, 21 insertions, 10 deletions

diff --git a/cli/lsp/testing/execution.rs b/cli/lsp/testing/execution.rs
index dcf980fd6..bc780a475 100644
--- a/cli/lsp/testing/execution.rs
+++ b/cli/lsp/testing/execution.rs
@@ -14,6 +14,7 @@ use crate::lsp::client::TestingNotification;
 use crate::lsp::config;
 use crate::lsp::logging::lsp_log;
 use crate::ops;
+use crate::ops::testing::create_stdout_stderr_pipes;
 use crate::proc_state;
 use crate::tools::test;
 
@@ -183,11 +184,17 @@ async fn test_specifier(
   options: Option<Value>,
 ) -> Result<(), AnyError> {
   if !token.is_cancelled() {
+    let (stdout_writer, stderr_writer) =
+      create_stdout_stderr_pipes(channel.clone());
     let mut worker = create_main_worker(
       &ps,
       specifier.clone(),
       permissions,
-      vec![ops::testing::init(channel.clone())],
+      vec![ops::testing::init(
+        channel.clone(),
+        stdout_writer,
+        stderr_writer,
+      )],
     );
 
     worker
@@ -752,16 +759,20 @@ impl test::TestReporter for LspTestReporter {
         .get(origin)
         .and_then(|v| v.last().map(|td| td.into()))
     });
-    match output {
-      test::TestOutput::Console(value) => {
-        self.progress(lsp_custom::TestRunProgressMessage::Output {
-          value: value.replace('\n', "\r\n"),
-          test,
-          // TODO(@kitsonk) test output should include a location
-          location: None,
-        })
+    let value = match output {
+      test::TestOutput::PrintStdout(value)
+      | test::TestOutput::PrintStderr(value) => value.replace('\n', "\r\n"),
+      test::TestOutput::Stdout(bytes) | test::TestOutput::Stderr(bytes) => {
+        String::from_utf8_lossy(bytes).replace('\n', "\r\n")
       }
-    }
+    };
+
+    self.progress(lsp_custom::TestRunProgressMessage::Output {
+      value,
+      test,
+      // TODO(@kitsonk) test output should include a location
+      location: None,
+    })
   }
 
   fn report_result(