Sunshine Pty Ltd is an Australian based Manufacturer. On $1$ July $2016,$ Sunshine purchased a machine from ABC Pty Ltd for $$50000$ and the freight cost is $$1000.$ It is expected to be used in $10$ years with no residual value. Sunshine Pty Ltd adopts straight$-$line depreciation method and uses cost model in accounting for the machine.

In the financial year ending $30$ June $2019,$ due to financial crisis the fair value of the machine falls to $$22000$ on $30$ June $2019.$

Due to the widespread of COVID$-19,$ Sunshine has been experiencing sharp decrease in sales volume. After being reviewed, the machine is estimated to have fair value of $$5000$ and value in use is $$6000$ on $30$ June $2021.$ 

Required:

$1.$ Calculate the depreciation expense for years ending $30$ June $2017$ and $30$ June $2018$ using straight$-$line method and record the journal entries accordingly. $$

$2.$ Record transactions for the financial years ending $30$ June $2019,30$ June $2020,$ and $30$ June $2021$

$3.$ Discuss indicators for impairment tests in accordance with AASB$136$