feat: add channel test env toggle

setting/operation_setting/monitor_setting.go

@@ -31,5 +31,11 @@ func GetMonitorSetting() *MonitorSetting {
 			monitorSetting.AutoTestChannelMinutes = float64(frequency)
 		}
 	}
+	if enabled, ok := os.LookupEnv("CHANNEL_TEST_ENABLED"); ok {
+		parsed, err := strconv.ParseBool(enabled)
+		if err == nil {
+			monitorSetting.AutoTestChannelEnabled = parsed
+		}
+	}
 	return &monitorSetting
 }

setting/operation_setting/monitor_setting_test.go

@@ -0,0 +1,43 @@
+package operation_setting
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGetMonitorSetting_ChannelTestEnabledEnvOverridesEnabledConfig(t *testing.T) {
+	orig := monitorSetting
+	t.Cleanup(func() { monitorSetting = orig })
+
+	t.Setenv("CHANNEL_TEST_ENABLED", "false")
+	t.Setenv("CHANNEL_TEST_FREQUENCY", "5")
+	monitorSetting = MonitorSetting{
+		AutoTestChannelEnabled: true,
+		AutoTestChannelMinutes: 20,
+	}
+
+	setting := GetMonitorSetting()
+
+	require.NotNil(t, setting)
+	assert.False(t, setting.AutoTestChannelEnabled)
+	assert.Equal(t, float64(5), setting.AutoTestChannelMinutes)
+}
+
+func TestGetMonitorSetting_ChannelTestEnabledEnvCanEnableDisabledConfig(t *testing.T) {
+	orig := monitorSetting
+	t.Cleanup(func() { monitorSetting = orig })
+
+	t.Setenv("CHANNEL_TEST_ENABLED", "true")
+	monitorSetting = MonitorSetting{
+		AutoTestChannelEnabled: false,
+		AutoTestChannelMinutes: 12,
+	}
+
+	setting := GetMonitorSetting()
+
+	require.NotNil(t, setting)
+	assert.True(t, setting.AutoTestChannelEnabled)
+	assert.Equal(t, float64(12), setting.AutoTestChannelMinutes)
+}