Revert "Remove unused func in claimhelper (#2306)" (#2309)

This reverts commit 05862a9.

pkg/claimhelper/claimhelper.go

@@ -290,6 +290,14 @@ func UnmarshalConfigurations(configurations []byte, claimConfigurations map[stri
 	}
 }
 
+// UnmarshalClaim unmarshals the claim file
+func UnmarshalClaim(claimFile []byte, claimRoot *claim.Root) {
+	err := j.Unmarshal(claimFile, &claimRoot)
+	if err != nil {
+		log.Fatal("error unmarshalling claim file: %v", err)
+	}
+}
+
 // ReadClaimFile writes the output payload to the claim file.  In the event of an error, this method fatally fails.
 func ReadClaimFile(claimFileName string) (data []byte, err error) {
 	data, err = os.ReadFile(claimFileName)
@@ -300,6 +308,24 @@ func ReadClaimFile(claimFileName string) (data []byte, err error) {
 	return data, nil
 }
 
+// GetConfigurationFromClaimFile retrieves configuration details from claim file
+func GetConfigurationFromClaimFile(claimFileName string) (env *provider.TestEnvironment, err error) {
+	data, err := ReadClaimFile(claimFileName)
+	if err != nil {
+		log.Error("ReadClaimFile failed with err: %v", err)
+		return env, err
+	}
+	var aRoot claim.Root
+	fmt.Printf("%s", data)
+	UnmarshalClaim(data, &aRoot)
+	configJSON, err := j.Marshal(aRoot.Claim.Configurations)
+	if err != nil {
+		return nil, fmt.Errorf("cannot convert config to json")
+	}
+	err = j.Unmarshal(configJSON, &env)
+	return env, err
+}
+
 // MarshalClaimOutput is a helper function to serialize a claim as JSON for output.  In the event of an error, this
 // method fatally fails.
 func MarshalClaimOutput(claimRoot *claim.Root) []byte {