AllocateMiniPorts(1) reserved masterPort and masterPort+GrpcPortOffset
by holding listeners open, but closed them on return. The subsequent
AllocatePorts call bound 127.0.0.1:0, so the OS could immediately reuse
the just-released mini gRPC port as a volume port — causing the volume
server to fail at bind time with "address already in use".
Introduce AllocatePortSet(miniCount, regularCount) that holds every
listener open until the full set is chosen, and route the five volume
test cluster builders through it.
* test: consolidate port allocation into shared test/testutil package
Move duplicated port allocation logic from 15+ test files into a single
shared package at test/testutil/. This fixes a port collision bug where
independently allocated ports could overlap via the gRPC offset
(port+10000), causing weed mini to reject the configuration.
The shared package provides:
- AllocatePorts: atomic allocation of N unique ports
- AllocateMiniPorts/MustFreeMiniPorts: gRPC-offset-aware allocation
that prevents port A+10000 == port B collisions
- WaitForPort, WaitForService, FindBindIP, WriteIAMConfig, HasDocker
* test: address review feedback and fix FUSE build
- Revert fuse_integration change: it has its own go.mod and cannot
import the shared testutil package
- AllocateMiniPorts: hold all listeners open until the entire batch is
allocated, preventing race conditions where other processes steal ports
- HasDocker: add 5s context timeout to avoid hanging on stalled Docker
- WaitForService: only treat 2xx HTTP status codes as ready
* test: use global rand in AllocateMiniPorts for better seeding
Go 1.20+ auto-seeds the global rand generator. Using it avoids
identical sequences when multiple tests call at the same nanosecond.
* test: revert WaitForService status code check
S3 endpoints return non-2xx (e.g. 403) on bare GET requests, so
requiring 2xx caused the S3 integration test to time out. Any HTTP
response is sufficient proof that the service is running.
* test: fix gofmt formatting in s3tables test files
