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Alex Chan 7953592f40 tstest/integration: get TestOneNodeUpAuth to pass when offline ... How TestOneNodeUpAuth works: * it starts a test version of tailscaled * it runs `tailscale up` * it checks that tailscaled becomes "Running" However, if the network is down, the test either fails or times out, because tailscaled never becomes Running. ## Why does the test fail? ipn only becomes Running when it sees at least one live peer or DERP connection: 0cc1b2ff76/ipn/ipnlocal/local.go (L5861-L5866) The test only uses a single node, so it's never going to see a peer -- it has to wait to see a DERP server. The test environment does have a DERP map of in-memory DERP nodes, but we aren't connecting to them. magicsock sets the preferred DERP server in `updateNetInfo()`, but this function returns early if the network is down. 0cc1b2ff76/wgengine/magicsock/magicsock.go (L1053-L1106) Because we're checking the real network, this prevents ipn from entering "Running" and causes the test to fail. ## What's the fix? In tests, we can assume the network is up unless we're explicitly testing the behaviour of tailscaled when the network is down. We do something similar in magicsock/derp.go, where we assume we're connected to control unless explicitly testing otherwise: 7d2101f352/wgengine/magicsock/derp.go (L166-L177) This is the template for the changes to `networkDown()`. Additionally, the `testenv.InTest()` function currently checks for the `-test.v` flag, but this isn't visible to the version of tailscaled running in the test environment. Instead, we add a new `TEST` env var so this process knows it's inside a test. Fixes #17122 Signed-off-by: Alex Chan <alexc@tailscale.com>		3 months ago
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archtest	all: cleanup unused code, part 1 (#10661)	2 years ago
deptest	ipn/ipnlocal: use policyclient.Client always, stop using global syspolicy funcs	3 months ago
integration	tstest/integration: get TestOneNodeUpAuth to pass when offline	3 months ago
iosdeps	feature/capture: move packet capture to feature/*, out of iOS + CLI	10 months ago
jsdeps	all: use math/rand/v2 more	2 years ago
mts	tstest/mts: add multiple-tailscaled development tool	9 months ago
natlab	tstest/natlab: fix conn.Close race with conn.ReadFromUDPAddrPort (#16710)	4 months ago
nettest	net/{netx,memnet},all: add netx.DialFunc, move memnet Network impl	8 months ago
tailmac	tstest/tailmac: add support for mounting host directories in the guest (#13957)	1 year ago
tlstest	tstest/tlstest: simplify, don't even bake in any keys	6 months ago
tools	go.{mod,sum},tstest/tools,k8s-operator,cmd/k8s-operator: autogenerate CRD API docs (#12884)	1 year ago
allocs.go	all: update copyright and license headers	3 years ago
clock.go	tstime: add Since method (#8622)	2 years ago
clock_test.go	all: use Go 1.22 range-over-int	2 years ago
log.go	net/portmapper: fix test flakes from logging after test done	7 months ago
log_test.go	all: update copyright and license headers	3 years ago
reflect.go	net/dns: fix IsZero and Equal methods on OSConfig	1 year ago
resource.go	tstest: parse goroutines for diff in ResourceCheck (#15619)	8 months ago
resource_test.go	tstest: parse goroutines for diff in ResourceCheck (#15619)	8 months ago
test-wishlist.md	wf/firewall: allow link-local multicast for permitted local routes when the killswitch is on on Windows	1 year ago
tstest.go	ipn/{conffile,ipnlocal}: start booting tailscaled from a config file w/ auth key	2 years ago
tstest_test.go	tstest: add method to Replace values for tests	3 years ago