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gen_error_as_target.go
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gen_error_as_target.go
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package main
import (
"text/template"
"github.com/Antonboom/testifylint/internal/checkers"
)
type ErrorAsTargetTestsGenerator struct{}
func (g ErrorAsTargetTestsGenerator) TemplateData() any {
var (
checker = checkers.NewErrorIsAs().Name()
defaultReport = checker + ": second argument to %s.%s must be a non-nil pointer to either a type that implements error, or to any interface type" //nolint:lll
errorPtrReport = checker + ": second argument to %s.%s should not be *error"
)
return struct {
CheckerName CheckerName
InvalidAssertions []Assertion
ValidAssertions []Assertion
}{
CheckerName: CheckerName(checker),
InvalidAssertions: []Assertion{
{Fn: "ErrorAs", Argsf: "err, nil", ReportMsgf: defaultReport, ProposedFn: "ErrorAs"},
{Fn: "ErrorAs", Argsf: "err, pathErrNotPtr", ReportMsgf: defaultReport, ProposedFn: "ErrorAs"},
{Fn: "ErrorAs", Argsf: "err, pathErrNil", ReportMsgf: defaultReport, ProposedFn: "ErrorAs"},
{Fn: "ErrorAs", Argsf: "err, err", ReportMsgf: defaultReport, ProposedFn: "ErrorAs"},
{Fn: "ErrorAs", Argsf: "err, iface", ReportMsgf: defaultReport, ProposedFn: "ErrorAs"},
{Fn: "ErrorAs", Argsf: "err, &i", ReportMsgf: defaultReport, ProposedFn: "ErrorAs"},
{Fn: "ErrorAs", Argsf: "err, &err", ReportMsgf: errorPtrReport, ProposedFn: "ErrorAs"},
},
ValidAssertions: []Assertion{
{Fn: "ErrorAs", Argsf: "err, &pathErr"},
{Fn: "ErrorAs", Argsf: "err, &iface"},
{Fn: "ErrorAs", Argsf: "err, emptyIface"},
{Fn: "ErrorAs", Argsf: "err, &emptyIface"},
},
}
}
func (ErrorAsTargetTestsGenerator) ErroredTemplate() Executor {
return template.Must(template.New("ErrorAsTargetTestsGenerator.ErroredTemplate").
Funcs(fm).
Parse(ErrorAsTargetTestTmpl))
}
func (ErrorAsTargetTestsGenerator) GoldenTemplate() Executor {
return nil
}
const ErrorAsTargetTestTmpl = header + `
package {{ .CheckerName.AsPkgName }}
import (
"os"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func {{ .CheckerName.AsTestName }}(t *testing.T) {
var (
err error
pathErrNotPtr os.PathError
pathErrNil *os.PathError
pathErr = new(os.PathError)
i int
iface interface { m() }
emptyIface any
)
// Invalid.
{
{{- range $ai, $assrn := $.InvalidAssertions }}
{{ NewAssertionExpander.Expand $assrn "assert" "t" nil }}
{{ NewAssertionExpander.Expand $assrn "require" "t" nil }}
{{ end -}}
}
// Valid.
{
{{- range $ai, $assrn := $.ValidAssertions }}
{{ NewAssertionExpander.Expand $assrn "assert" "t" nil }}
{{ NewAssertionExpander.Expand $assrn "require" "t" nil }}
{{ end -}}
}
}
`