driftctl/test/test_diff.go

79 lines
1.9 KiB
Go

package test
import (
"strings"
"testing"
"github.com/snyk/driftctl/enumeration/terraform"
"github.com/aws/aws-sdk-go/aws/awsutil"
"github.com/r3labs/diff/v2"
"github.com/snyk/driftctl/enumeration/resource"
"github.com/snyk/driftctl/test/goldenfile"
"github.com/zclconf/go-cty/cty"
"github.com/zclconf/go-cty/cty/gocty"
"github.com/zclconf/go-cty/cty/json"
)
func TestAgainstGoldenFile(
got []*resource.Resource,
ty string,
dirName string,
provider terraform.TerraformProvider,
deserializer *resource.Deserializer,
shouldUpdate bool,
tt *testing.T,
) {
var expectedResources []*resource.Resource
ctyType := cty.List(provider.Schema()[ty].Block.ImpliedType())
// update golden file
if shouldUpdate {
attributes := make([]*resource.Attributes, 0, len(got))
for _, res := range got {
attributes = append(attributes, res.Attributes())
}
ctVal, err := gocty.ToCtyValue(attributes, ctyType)
if err != nil {
panic(err)
}
unm, err := json.Marshal(ctVal, ctyType)
if err != nil {
panic(err)
}
goldenfile.WriteFile(dirName, unm, goldenfile.ResultsFilename)
}
// read golden file
file := goldenfile.ReadFile(dirName, goldenfile.ResultsFilename)
decodedJson, err := json.Unmarshal(file, ctyType)
if err != nil {
panic(err)
}
decodedResources, err := deserializer.Deserialize(ty, decodedJson.AsValueSlice())
if err != nil {
panic(err)
}
expectedResources = append(expectedResources, decodedResources...)
// diff
differ, err := diff.NewDiffer(diff.SliceOrdering(true))
if err != nil {
panic(err)
}
got = resource.Sort(got)
expectedResources = resource.Sort(expectedResources)
changelog, err := differ.Diff(got, expectedResources)
if err != nil {
panic(err)
}
if len(changelog) > 0 {
for _, change := range changelog {
tt.Errorf("%s got = %v, want %v", strings.Join(change.Path, "."), awsutil.Prettify(change.From), awsutil.Prettify(change.To))
}
}
}