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mingo_test.go
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mingo_test.go
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package mingo
import (
"fmt"
"os"
"path/filepath"
"sort"
"strconv"
"strings"
"testing"
)
func TestLangChecks(t *testing.T) {
entries, err := os.ReadDir("_testdata")
if err != nil {
t.Fatal(err)
}
var versions []int
for _, entry := range entries {
if !entry.IsDir() {
continue
}
min, err := strconv.Atoi(entry.Name())
if err != nil {
continue // sic
}
versions = append(versions, min)
}
sort.Ints(versions)
var earlierCode string
for _, min := range versions {
minstr := strconv.Itoa(min)
t.Run(minstr, func(t *testing.T) {
var code string
entries, err := os.ReadDir("_testdata/" + minstr)
if err != nil {
t.Fatal(err)
}
for _, entry := range entries {
if entry.IsDir() {
continue
}
if !strings.HasSuffix(entry.Name(), ".go") {
continue
}
t.Run(strings.TrimSuffix(entry.Name(), ".go"), func(t *testing.T) {
content, err := os.ReadFile("_testdata/" + minstr + "/" + entry.Name())
if err != nil {
t.Fatal(err)
}
code += string(content)
tmpdir, err := os.MkdirTemp("", "mingo")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpdir)
gomod := filepath.Join(tmpdir, "go.mod")
if err := os.WriteFile(gomod, []byte("module foo\ngo 1.23.0\n"), 0644); err != nil {
t.Fatal(err)
}
tmpfile, err := os.Create(filepath.Join(tmpdir, "foo.go"))
if err != nil {
t.Fatal(err)
}
t.Log(tmpfile.Name())
fmt.Fprint(tmpfile, "package foo\n\n")
fmt.Fprint(tmpfile, earlierCode)
if _, err := tmpfile.Write(content); err != nil {
t.Fatal(err)
}
if err = tmpfile.Close(); err != nil {
t.Fatal(err)
}
t.Run("ScanDir", func(t *testing.T) {
s := Scanner{Verbose: testing.Verbose()}
res, err := s.ScanDir(tmpdir)
if err != nil {
t.Fatal(err)
}
if res.Version() != min {
t.Errorf("got %d, want %d", res.Version(), min)
}
})
// TODO: check the same thing using Scanner.Analyzer
// (when the API in https://github.com/golang/go/issues/61324 lands)
})
}
earlierCode += code
})
}
}