feat: render failing #[test] results as source diagnostics

crates/cli/src/go_cli.rs

@@ -535,6 +535,9 @@ pub struct GoTestEvent {
     pub output: Option<String>,
     /// `build-*` events name the package here, not in `package`.
     pub import_path: Option<String>,
+    /// `attr` events carry a key/value.
+    pub key: Option<String>,
+    pub value: Option<String>,
 }
 
 pub struct TestRun {

crates/cli/src/handlers/build.rs

@@ -9,7 +9,7 @@ use crate::lock::acquire_target_lock;
 use crate::workspace::WorkspaceBindgen;
 use diagnostics::render::{self, Filter};
 use lisette::fs::{LocalFileSystem, prune_orphan_go_files};
-use lisette::pipeline::{CompileConfig, CompilePhase, TestIndex, compile};
+use lisette::pipeline::{CompileConfig, CompilePhase, Sources, TestIndex, compile};
 
 pub fn emit(path: Option<String>, sourcemap: bool) -> i32 {
     with_locked_project(path, |prep| {
@@ -167,13 +167,15 @@ pub(super) struct BuildOptions {
 pub(super) struct BuildOutcome {
     pub code: i32,
     pub test_index: TestIndex,
+    pub sources: Sources,
 }
 
 impl BuildOutcome {
     fn failed(code: i32) -> Self {
         Self {
             code,
             test_index: TestIndex::default(),
+            sources: Sources::default(),
         }
     }
 }
@@ -427,6 +429,7 @@ pub(super) fn build_locked(prep: &BuildPrep, options: BuildOptions) -> BuildOutc
     BuildOutcome {
         code: 0,
         test_index: result.test_index,
+        sources: result.sources,
     }
 }
 

crates/cli/src/handlers/test/mod.rs

@@ -51,7 +51,10 @@ pub fn test(path: Option<String>, go_flags: Vec<String>) -> i32 {
             &run.events,
             &prep.manifest.project.name,
         );
-        eprint!("{}", render(&report, use_color(), started.elapsed()));
+        eprint!(
+            "{}",
+            render(&report, &outcome.sources, use_color(), started.elapsed())
+        );
 
         let build_error = report.build_output.trim();
         if !build_error.is_empty() {