Function TestIdleTimeoutFromEnv

internal/llm/llm_test.go:830–860

TestIdleTimeoutFromEnv pins the CODEHAMR_IDLE_TIMEOUT contract: a Go duration or bare-seconds string wins, anything else (unset, garbage, non-positive) falls back to the default. The default is deliberately generous because this is a dead-connection detector, not a loop guard.

(t *testing.T)

func TestNewHasNoHTTPTimeout(t *testing.T) {
	c := New("http://example.test", "model", "token")
	if c.HTTP.Timeout != 0 {
		t.Fatalf("http.Client.Timeout must be 0 so per-turn context governs SSE lifetime; got %v", c.HTTP.Timeout)
	}
}

// TestIdleTimeoutFromEnv pins the CODEHAMR_IDLE_TIMEOUT contract: a Go duration
// or bare-seconds string wins, anything else (unset, garbage, non-positive)
// falls back to the default. The default is deliberately generous because this
// is a dead-connection detector, not a loop guard.
func TestIdleTimeoutFromEnv(t *testing.T) {
	cases := []struct {
		val  string
		set  bool
		want time.Duration
	}{
		{set: false, want: streamIdleTimeout},
		{val: "", set: true, want: streamIdleTimeout},
		{val: "90m", set: true, want: 90 * time.Minute},
		{val: "1h30m", set: true, want: 90 * time.Minute},
		{val: "300", set: true, want: 300 * time.Second},
		{val: "garbage", set: true, want: streamIdleTimeout},
		{val: "0", set: true, want: streamIdleTimeout},
		{val: "-5m", set: true, want: streamIdleTimeout},
		// Bare seconds large enough to wrap the ×time.Second multiply to a
		// small POSITIVE duration must fall back, not silently kill every
		// live-but-slow stream mid-prefill.
		{val: "18446744074", set: true, want: streamIdleTimeout},
		{val: "9000000000", set: true, want: 9_000_000_000 * time.Second},
	}
	for _, tc := range cases {
		if tc.set {
			t.Setenv("CODEHAMR_IDLE_TIMEOUT", tc.val)
		} else {
			os.Unsetenv("CODEHAMR_IDLE_TIMEOUT")