#####
# Test of missing go.mod error message.
$ govulncheck -C ${moddir}/nogomod . --> FAIL 1
govulncheck: no go.mod file

govulncheck only works with Go modules. Try navigating to your module directory.
Otherwise, run go mod init to make your project a module.

See https://go.dev/doc/modules/managing-dependencies for more information.

#####
# Test of handing a binary to source mode
$ govulncheck ${vuln_binary} --> FAIL 2
govulncheck: myfile is a file.

By default, govulncheck runs source analysis on Go modules.

Did you mean to run govulncheck with -mode=binary?

For details, run govulncheck -h.

#####
# Test of handing an invalid package pattern to source mode
$ govulncheck -C ${moddir}/vuln blah --> FAIL 1
govulncheck: loading packages: 
There are errors with the provided package patterns:

-: package foo is not in GOROOT (/tmp/foo)

For details on package patterns, see https://pkg.go.dev/cmd/go#hdr-Package_lists_and_patterns.