opentofu/internal/states/remote/remote_test.go
Martin Atkins f40800b3a4 Move states/ to internal/states/
This is part of a general effort to move all of Terraform's non-library
package surface under internal in order to reinforce that these are for
internal use within Terraform only.

If you were previously importing packages under this prefix into an
external codebase, you could pin to an earlier release tag as an interim
solution until you've make a plan to achieve the same functionality some
other way.
2021-05-17 14:09:07 -07:00

131 lines
3.0 KiB
Go

package remote
import (
"crypto/md5"
"encoding/json"
"testing"
)
func TestRemoteClient_noPayload(t *testing.T) {
s := &State{
Client: nilClient{},
}
if err := s.RefreshState(); err != nil {
t.Fatal("error refreshing empty remote state")
}
}
// nilClient returns nil for everything
type nilClient struct{}
func (nilClient) Get() (*Payload, error) { return nil, nil }
func (c nilClient) Put([]byte) error { return nil }
func (c nilClient) Delete() error { return nil }
// mockClient is a client that tracks persisted state snapshots only in
// memory and also logs what it has been asked to do for use in test
// assertions.
type mockClient struct {
current []byte
log []mockClientRequest
}
type mockClientRequest struct {
Method string
Content map[string]interface{}
}
func (c *mockClient) Get() (*Payload, error) {
c.appendLog("Get", c.current)
if c.current == nil {
return nil, nil
}
checksum := md5.Sum(c.current)
return &Payload{
Data: c.current,
MD5: checksum[:],
}, nil
}
func (c *mockClient) Put(data []byte) error {
c.appendLog("Put", data)
c.current = data
return nil
}
func (c *mockClient) Delete() error {
c.appendLog("Delete", c.current)
c.current = nil
return nil
}
func (c *mockClient) appendLog(method string, content []byte) {
// For easier test assertions, we actually log the result of decoding
// the content JSON rather than the raw bytes. Callers are in principle
// allowed to provide any arbitrary bytes here, but we know we're only
// using this to test our own State implementation here and that always
// uses the JSON state format, so this is fine.
var contentVal map[string]interface{}
if content != nil {
err := json.Unmarshal(content, &contentVal)
if err != nil {
panic(err) // should never happen because our tests control this input
}
}
c.log = append(c.log, mockClientRequest{method, contentVal})
}
// mockClientForcePusher is like mockClient, but also implements
// EnableForcePush, allowing testing for this behavior
type mockClientForcePusher struct {
current []byte
force bool
log []mockClientRequest
}
func (c *mockClientForcePusher) Get() (*Payload, error) {
c.appendLog("Get", c.current)
if c.current == nil {
return nil, nil
}
checksum := md5.Sum(c.current)
return &Payload{
Data: c.current,
MD5: checksum[:],
}, nil
}
func (c *mockClientForcePusher) Put(data []byte) error {
if c.force {
c.appendLog("Force Put", data)
} else {
c.appendLog("Put", data)
}
c.current = data
return nil
}
// Implements remote.ClientForcePusher
func (c *mockClientForcePusher) EnableForcePush() {
c.force = true
}
func (c *mockClientForcePusher) Delete() error {
c.appendLog("Delete", c.current)
c.current = nil
return nil
}
func (c *mockClientForcePusher) appendLog(method string, content []byte) {
var contentVal map[string]interface{}
if content != nil {
err := json.Unmarshal(content, &contentVal)
if err != nil {
panic(err) // should never happen because our tests control this input
}
}
c.log = append(c.log, mockClientRequest{method, contentVal})
}