A JSON verb's answer is its standard output alone

status --json prints its warnings beside the document; parsed from both streams together the first
status asked through the console carried no answer as data. Output stays both streams, in order.

cmd/mesh-controller/seatverbs_test.go

@@ -77,3 +77,21 @@ func TestToolsAnswersTheSeatsRecords(t *testing.T) {
 		t.Fatal("the mesh-controller seat is not in the listing")
 	}
 }
+
+// A JSON verb's answer is parsed from what the command wrote to standard output alone; a warning it
+// printed beside the document does not take the document away. The test binary stands in for the
+// controller: `-test.run` with a name that matches nothing prints `ok` and a warning about no tests.
+func TestAJSONVerbsAnswerIsItsStandardOutput(t *testing.T) {
+	jsonVerbs["-test.run"] = true
+	t.Cleanup(func() { delete(jsonVerbs, "-test.run") })
+	answer, err := runVerb(t.Context(), []string{"-test.run", "TestAnswerEcho", "-test.v"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !answer.OK {
+		t.Fatalf("the command failed: %s", answer.Output)
+	}
+	if !strings.Contains(answer.Output, "PASS") {
+		t.Fatalf("stderr and stdout are both what the command said: %s", answer.Output)
+	}
+}