terraform/internal/states/statefile/roundtrip_test.go

77 lines
1.3 KiB
Go

package statefile
import (
"bytes"
"io/ioutil"
"os"
"path/filepath"
"sort"
"strings"
"testing"
"github.com/go-test/deep"
)
func TestRoundtrip(t *testing.T) {
const dir = "testdata/roundtrip"
entries, err := ioutil.ReadDir(dir)
if err != nil {
t.Fatal(err)
}
for _, info := range entries {
const inSuffix = ".in.tfstate"
const outSuffix = ".out.tfstate"
if info.IsDir() {
continue
}
inName := info.Name()
if !strings.HasSuffix(inName, inSuffix) {
continue
}
name := inName[:len(inName)-len(inSuffix)]
outName := name + outSuffix
t.Run(name, func(t *testing.T) {
oSrcWant, err := ioutil.ReadFile(filepath.Join(dir, outName))
if err != nil {
t.Fatal(err)
}
oWant, diags := readStateV4(oSrcWant)
if diags.HasErrors() {
t.Fatal(diags.Err())
}
ir, err := os.Open(filepath.Join(dir, inName))
if err != nil {
t.Fatal(err)
}
defer ir.Close()
f, err := Read(ir)
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
var buf bytes.Buffer
err = Write(f, &buf)
if err != nil {
t.Fatal(err)
}
oSrcWritten := buf.Bytes()
oGot, diags := readStateV4(oSrcWritten)
if diags.HasErrors() {
t.Fatal(diags.Err())
}
problems := deep.Equal(oGot, oWant)
sort.Strings(problems)
for _, problem := range problems {
t.Error(problem)
}
})
}
}