YOU SAID:
I'm going to fail this test
INTO JAPANESE
このテストは失敗するだろう
BACK INTO ENGLISH
This test will fail
INTO JAPANESE
このテストは失敗する
BACK INTO ENGLISH
This test fails
INTO JAPANESE
このテストは失敗しました
BACK INTO ENGLISH
This test failed
INTO JAPANESE
このテストは失敗しました
BACK INTO ENGLISH
This test failed
You've done this before, haven't you.