func TestForceToFloat64(t *testing.T) {
    assert.Equal(t, float64(1), forceToFloat64("1"))
    assert.Equal(t, float64(0), forceToFloat64("a1"))
    assert.Equal(t, float64(0), forceToFloat64("1a"))
    assert.Equal(t, float64(1.21), forceToFloat64("1.21"))