Improve formatting of testing: warning: no tests to run

[ghostsquad]

I'm seeing this warning when using gotestsum but not with go test

testing: warning: no tests to run

This seems to be something that go test emits in some cases, but I would then expect it to do so with go test.

❯ gotestsum --format testname ./...
testing: warning: no tests to run
PASS pkg/clioptions (cached)
PASS pkg/util/term.TestWordWrapWriter (0.00s)
PASS pkg/util/term.TestMaxWidthWriter (0.00s)
PASS pkg/util/term (cached)
PASS pkg/kubernetes/health/apis/apps/v1.TestDeploymentHealth (0.00s)
PASS pkg/kubernetes/health/apis/apps/v1 (cached)
PASS pkg/kubernetes/health/apis/extensions/v1beta1.TestIngressHealth (0.00s)
PASS pkg/kubernetes/health/apis/extensions/v1beta1 (cached)
EMPTY cmd/seaworthy
EMPTY pkg/cmd/verify
EMPTY pkg/errors
PASS pkg/kubernetes.TestResourcerOptions_GetCmdArgs/blah (0.00s)
PASS pkg/kubernetes.TestResourcerOptions_GetCmdArgs (0.00s)
PASS pkg/kubernetes.TestGetEvents/valid_args_provided (0.00s)
PASS pkg/kubernetes.TestGetEvents/blah (0.00s)
PASS pkg/kubernetes.TestGetEvents (0.00s)
PASS pkg/kubernetes.TestGetResources (0.00s)
PASS pkg/kubernetes.TestKubeCtlRawResourcer (0.00s)
PASS pkg/kubernetes.Test_kubectlRawResourcer (0.00s)
PASS pkg/kubernetes.Test_resourcesFromBytes (0.00s)
PASS pkg/kubernetes
EMPTY pkg/kubernetes/health
EMPTY pkg/kubernetes/health/apis/core/v1
EMPTY pkg/kubernetes/health/install
EMPTY pkg/util/sh
EMPTY pkg/util/templates

DONE 13 tests in 3.995s

12:55:31 in seaworthy on  main [!+] via 🐹 v1.14.4 took 4s
❯ go test ./...
?   	github.com/cakehappens/seaworthy/cmd/seaworthy	[no test files]
ok  	github.com/cakehappens/seaworthy/pkg/clioptions	0.224s [no tests to run]
?   	github.com/cakehappens/seaworthy/pkg/cmd/verify	[no test files]
?   	github.com/cakehappens/seaworthy/pkg/errors	[no test files]
ok  	github.com/cakehappens/seaworthy/pkg/kubernetes	0.698s
?   	github.com/cakehappens/seaworthy/pkg/kubernetes/health	[no test files]
ok  	github.com/cakehappens/seaworthy/pkg/kubernetes/health/apis/apps/v1	0.513s
?   	github.com/cakehappens/seaworthy/pkg/kubernetes/health/apis/core/v1	[no test files]
ok  	github.com/cakehappens/seaworthy/pkg/kubernetes/health/apis/extensions/v1beta1	0.336s
?   	github.com/cakehappens/seaworthy/pkg/kubernetes/health/install	[no test files]
?   	github.com/cakehappens/seaworthy/pkg/util/sh	[no test files]
?   	github.com/cakehappens/seaworthy/pkg/util/templates	[no test files]
ok  	github.com/cakehappens/seaworthy/pkg/util/term	0.205s
12:56:21 in seaworthy on  main [!+] via 🐹 v1.14.4 took 2s

I don't entirely understand why this is happening. Any ideas?

[dnephin]

That's interesting, I don't think I have seen that in the gotestsum output before. It comes from go test for sure (https://github.com/golang/go/blob/master/src/cmd/go/go_test.go#L122). There are also a couple places in testing that seem to print this line.

I would try go test -v ./... which may print it. Also go test -json ./... is what gotestsum will run. You may see it in that output and it might contain more information about which package it comes from.

This could be a bug in the testname format accidentally hiding some lines that should be printed.

[ghostsquad]

ok, so I found the problem. I have _test.go file but without any tests in it. Just an empty-ish file. I think it would be nice if gotestsum formatted it properly to show me where this message was coming from.

{"Time":"2020-08-08T14:03:11.546098-07:00","Action":"output","Package":"github.com/cakehappens/seaworthy/pkg/clioptions","Output":"testing: warning: no tests to run\n"}

It contains this line, along with the usual output: PASS for the same package.