Examples to demonstrate use of go tests with/without parallel flags
- Sequential - 5 Tests each having 1S sleep without
t.Parallel()statements. - Parallel - 5 Tests each having 1S sleep with
t.Parallel()statements.
Running tests without parallel flag (Default parallel flag value is GOMAXPROCS, equals runtime.NumCPU)
GOMAXPROCS - The GOMAXPROCS variable limits the number of operating system threads that can execute user-level Go code simultaneously
- Sequential tests
go test -v .\sequential_test.goResults
=== RUN TestSerial
=== RUN TestSerial/First
***** Running First test =====
===== First test complete *****
=== RUN TestSerial/Second
***** Running Second test =====
===== Second test complete *****
=== RUN TestSerial/Third
***** Running Third test =====
===== Third test complete *****
=== RUN TestSerial/Fourth
***** Running Fourth test =====
===== Fourth test complete *****
=== RUN TestSerial/Fifth
***** Running Fifth test =====
===== Fifth test complete *****
--- PASS: TestSerial (5.03s)
--- PASS: TestSerial/First (1.00s)
--- PASS: TestSerial/Second (1.01s)
--- PASS: TestSerial/Third (1.01s)
--- PASS: TestSerial/Fourth (1.01s)
--- PASS: TestSerial/Fifth (1.01s)
PASS
ok command-line-arguments 7.226s
- Parallel tests
go test -v .\parallel_test.goResults
=== RUN TestParallel
=== RUN TestParallel/First
=== PAUSE TestParallel/First
=== RUN TestParallel/Second
=== PAUSE TestParallel/Second
=== RUN TestParallel/Third
=== PAUSE TestParallel/Third
=== RUN TestParallel/Fourth
=== PAUSE TestParallel/Fourth
=== RUN TestParallel/Fifth
=== PAUSE TestParallel/Fifth
=== CONT TestParallel/First
***** Running First test =====
=== CONT TestParallel/Second
***** Running Second test =====
=== CONT TestParallel/Fifth
***** Running Fifth test =====
=== CONT TestParallel/Fourth
***** Running Fourth test =====
=== CONT TestParallel/Third
***** Running Third test =====
===== Second test complete *****
===== Third test complete *****
===== Fourth test complete *****
===== First test complete *****
===== Fifth test complete *****
--- PASS: TestParallel (0.00s)
--- PASS: TestParallel/Third (1.01s)
--- PASS: TestParallel/Fourth (1.01s)
--- PASS: TestParallel/Fifth (1.01s)
--- PASS: TestParallel/First (1.01s)
--- PASS: TestParallel/Second (1.01s)
PASS
ok command-line-arguments 1.131s
- Sequential tests
go test -v .\sequential_test.go -parallel 1Results
=== RUN TestSerial
=== RUN TestSerial/First
***** Running First test =====
===== First test complete *****
=== RUN TestSerial/Second
***** Running Second test =====
===== Second test complete *****
=== RUN TestSerial/Third
***** Running Third test =====
===== Third test complete *****
=== RUN TestSerial/Fourth
***** Running Fourth test =====
===== Fourth test complete *****
=== RUN TestSerial/Fifth
***** Running Fifth test =====
===== Fifth test complete *****
--- PASS: TestSerial (5.04s)
--- PASS: TestSerial/First (1.00s)
--- PASS: TestSerial/Second (1.01s)
--- PASS: TestSerial/Third (1.01s)
--- PASS: TestSerial/Fourth (1.01s)
--- PASS: TestSerial/Fifth (1.01s)
PASS
ok command-line-arguments 5.178s
- Parallel tests
go test -v .\parallel_test.go -parallel 1Results
=== RUN TestParallel
=== RUN TestParallel/First
=== PAUSE TestParallel/First
=== RUN TestParallel/Second
=== PAUSE TestParallel/Second
=== RUN TestParallel/Third
=== PAUSE TestParallel/Third
=== RUN TestParallel/Fourth
=== PAUSE TestParallel/Fourth
=== RUN TestParallel/Fifth
=== PAUSE TestParallel/Fifth
=== CONT TestParallel/First
***** Running First test =====
===== First test complete *****
=== CONT TestParallel/Fourth
***** Running Fourth test =====
===== Fourth test complete *****
=== CONT TestParallel/Fifth
***** Running Fifth test =====
===== Fifth test complete *****
=== CONT TestParallel/Third
***** Running Third test =====
===== Third test complete *****
=== CONT TestParallel/Second
***** Running Second test =====
===== Second test complete *****
--- PASS: TestParallel (0.00s)
--- PASS: TestParallel/First (1.00s)
--- PASS: TestParallel/Fourth (1.01s)
--- PASS: TestParallel/Fifth (1.01s)
--- PASS: TestParallel/Third (1.01s)
--- PASS: TestParallel/Second (1.01s)
PASS
ok command-line-arguments 5.160s
- Sequential tests
go test -v .\sequential_test.go -parallel 8Results
=== RUN TestSerial
=== RUN TestSerial/First
***** Running First test =====
===== First test complete *****
=== RUN TestSerial/Second
***** Running Second test =====
===== Second test complete *****
=== RUN TestSerial/Third
***** Running Third test =====
===== Third test complete *****
=== RUN TestSerial/Fourth
***** Running Fourth test =====
===== Fourth test complete *****
=== RUN TestSerial/Fifth
***** Running Fifth test =====
===== Fifth test complete *****
--- PASS: TestSerial (5.04s)
--- PASS: TestSerial/First (1.01s)
--- PASS: TestSerial/Second (1.01s)
--- PASS: TestSerial/Third (1.01s)
--- PASS: TestSerial/Fourth (1.01s)
--- PASS: TestSerial/Fifth (1.01s)
PASS
ok command-line-arguments 5.165s
- Parallel tests
go test -v .\parallel_test.go -parallel 8Results
=== RUN TestParallel
=== RUN TestParallel/First
=== PAUSE TestParallel/First
=== RUN TestParallel/Second
=== PAUSE TestParallel/Second
=== RUN TestParallel/Third
=== PAUSE TestParallel/Third
=== RUN TestParallel/Fourth
=== PAUSE TestParallel/Fourth
=== RUN TestParallel/Fifth
=== PAUSE TestParallel/Fifth
=== CONT TestParallel/First
***** Running First test =====
=== CONT TestParallel/Fifth
***** Running Fifth test =====
=== CONT TestParallel/Fourth
***** Running Fourth test =====
=== CONT TestParallel/Third
***** Running Third test =====
=== CONT TestParallel/Second
***** Running Second test =====
===== Fifth test complete *****
===== Second test complete *****
===== First test complete *****
===== Third test complete *****
===== Fourth test complete *****
--- PASS: TestParallel (0.00s)
--- PASS: TestParallel/Fifth (1.01s)
--- PASS: TestParallel/First (1.01s)
--- PASS: TestParallel/Second (1.01s)
--- PASS: TestParallel/Fourth (1.01s)
--- PASS: TestParallel/Third (1.01s)
PASS
ok command-line-arguments 1.135s