Function TestClassifyMainLoopStop

internal/agent/coverage_test.go:977–1004

classifyMainLoopStop keeps the unknown class for the empty-round and compression exits, but each reason must name its trigger: in --format json runs the manifest reason is the only stop diagnostic that leaves the runner, so the three non-budget stops must not collapse into one string.

(t *testing.T)

// runs the manifest reason is the only stop diagnostic that leaves the runner,
// so the three non-budget stops must not collapse into one string.
func TestClassifyMainLoopStop(t *testing.T) {
	reasons := make(map[string]llmloop.MainLoopStop)
	for _, tc := range []struct {
		name       string
		stop       llmloop.MainLoopStop
		wantClass  session.FailureClass
		wantReason string
	}{
		{"max_rounds", llmloop.StopMaxRounds, session.FailureBudget, "reached the maximum tool-request rounds without finishing"},
		{"empty_rounds", llmloop.StopEmptyRounds, session.FailureUnknown, "stopped after repeated rounds without a usable tool result"},
		{"compression", llmloop.StopCompression, session.FailureUnknown, "stopped because context compression exceeded its threshold"},
		{"none", llmloop.StopNone, session.FailureUnknown, "main task stopped before completing"},
	} {
		t.Run(tc.name, func(t *testing.T) {
			class, reason := classifyMainLoopStop(tc.stop)
			if class != tc.wantClass {
				t.Errorf("class = %q, want %q", class, tc.wantClass)
			}
			if reason != tc.wantReason {
				t.Errorf("reason = %q, want %q", reason, tc.wantReason)
			}
			if prev, dup := reasons[reason]; dup {
				t.Errorf("reason %q is shared by %v and %v; stops must stay distinguishable", reason, prev, tc.stop)
			}
			reasons[reason] = tc.stop
		})
	}
}