.

go/internal/xtracing/tracetest/example_test.go

@@ -190,7 +190,7 @@ func TestExpectValue(t *testing.T) {
 			hi("T1·A")
 		}()
 
-		t.Expect("t1", eventHello("T1·B"))
+		t.Expect("t1", eventHi("T1·B"))
 	})
 }
 
@@ -289,6 +289,17 @@ var testExpectMap = map[string]testExpect{
 `},
 
 	"TestExpectValue": {1,
-`
+`--- FAIL: TestExpectValue (<TIME>)
+    example_test.go:193: t1: expect: tracetest_test.eventHi:
+        want: T1·B
+	have: T1·A
+	diff:
+	-"T1·B"
+	+"T1·A"
+
+    example_test.go:193: test shutdown: #streams: 1,  #(pending events): 0
+        # t1
+
+    tracetest.go:<LINE>: t1: send: unexpected event data
 `},
 }