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Avery Pennarun 08acb502e5 Add tstest.PanicOnLog(), and fix various problems detected by this. ... If a test calls log.Printf, 'go test' horrifyingly rearranges the output to no longer be in chronological order, which makes debugging virtually impossible. Let's stop that from happening by making log.Printf panic if called from any module, no matter how deep, during tests. This required us to change the default error handler in at least one http.Server, as well as plumbing a bunch of logf functions around, especially in magicsock and wgengine, but also in logtail and backoff. To add insult to injury, 'go test' also rearranges the output when a parent test has multiple sub-tests (all the sub-test's t.Logf is always printed after all the parent tests t.Logf), so we need to screw around with a special Logf that can point at the "current" t (current_t.Logf) in some places. Probably our entire way of using subtests is wrong, since 'go test' would probably like to run them all in parallel if you called t.Parallel(), but it definitely can't because the're all manipulating the shared state created by the parent test. They should probably all be separate toplevel tests instead, with common setup/teardown logic. But that's a job for another time. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>		4 years ago
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ipnserver	Add tstest.PanicOnLog(), and fix various problems detected by this.	4 years ago
ipnstate	ipn/ipnstate: improve HTML output	4 years ago
policy	ipn, ipn/policy: filter portlist to a short list of "interesting" ports	5 years ago
backend.go	ipn, wgengine/filter: remove exported type aliases	4 years ago
doc.go	Move Linux client & common packages into a public repo.	5 years ago
e2e_test.go	Add tstest.PanicOnLog(), and fix various problems detected by this.	4 years ago
fake_test.go	ipn, wgengine/filter: remove exported type aliases	4 years ago
handle.go	ipn, wgengine/filter: remove exported type aliases	4 years ago
local.go	Add tstest.PanicOnLog(), and fix various problems detected by this.	4 years ago
message.go	ipn: add AllowVersionSkew bool to Notify & Message	4 years ago
message_test.go	Add tstest.PanicOnLog(), and fix various problems detected by this.	4 years ago
prefs.go	wgengine/router: add a setting to disable SNAT for subnet routes.	4 years ago
prefs_test.go	Add tstest.PanicOnLog(), and fix various problems detected by this.	4 years ago
store.go	ipn: have NewFileStore try to create directories as needed	5 years ago
store_test.go	Add tstest.PanicOnLog(), and fix various problems detected by this.	4 years ago