Tests

Refactor exception classes #535

Job	Run time
test-postgres (9.5)	4m 14s
test-platforms (3.8, ubuntu-latest, asyncio)	3m 25s
test-postgres (9.6)	5m 54s
test-platforms (3.8, ubuntu-latest, uvloop)	3m 8s
test-postgres (10)	3m 36s
test-platforms (3.8, macos-latest, asyncio)	2m 52s
test-postgres (11)	3m 54s
test-platforms (3.8, macos-latest, uvloop)	2m 34s
test-postgres (12)	3m 30s
test-platforms (3.8, windows-latest, asyncio)	5m 51s
test-postgres (13)	4m 5s
test-platforms (3.9, ubuntu-latest, asyncio)	3m 12s
test-postgres (14)	3m 36s
test-platforms (3.9, ubuntu-latest, uvloop)	3m 16s
test-postgres (15)	3m 48s
test-platforms (3.9, macos-latest, asyncio)	2m 48s
test-postgres (16)	3m 44s
test-platforms (3.9, macos-latest, uvloop)	2m 21s
test-platforms (3.9, windows-latest, asyncio)	5m 56s
test-platforms (3.10, ubuntu-latest, asyncio)	3m 24s
test-platforms (3.10, ubuntu-latest, uvloop)	3m 15s
test-platforms (3.10, macos-latest, asyncio)	3m 8s
test-platforms (3.10, macos-latest, uvloop)	3m 34s
test-platforms (3.10, windows-latest, asyncio)	5m 45s
test-platforms (3.11, ubuntu-latest, asyncio)	3m 20s
test-platforms (3.11, ubuntu-latest, uvloop)	2m 56s
test-platforms (3.11, macos-latest, asyncio)	4m 3s
test-platforms (3.11, macos-latest, uvloop)	3m 3s
test-platforms (3.11, windows-latest, asyncio)	5m 47s
test-platforms (3.12, ubuntu-latest, asyncio)	3m 45s
test-platforms (3.12, macos-latest, asyncio)	2m 57s
test-platforms (3.12, windows-latest, asyncio)	6m 0s
Regression Tests	0s
	2h 2m 41s

Provide feedback