feat(when): ✨ add statement to move or copy to an element with a cert…

…ain encoding

remove some debug leftover and move the fucntion to apply a new encoding in zencode_data.lua

src/lua/zencode_data.lua

@@ -581,3 +581,44 @@ end
     local pruned_tables = prune_in(pruned_values)
     return pruned_tables
  end
+
+-- encode the octet in ACK[src_name] following the src_enc
+-- and then it transform it back to octet following the dest_enc
+-- @param src_name name of the variable in ACK
+-- @param src_enc the encoding to use when transforming ACK[src_name] into string
+-- @param dest_enc the encoding to use when transfroming back the string into octet
+-- @return the octet/table of octets of the above transformation
+function apply_encoding(src_name, src_enc, dest_enc)
+  local src_value, src_codec = have(src_name)
+  f_src_enc = get_encoding_function(src_enc)
+  if not f_src_enc then error("Encoding format not found: "..src_enc, 2) end
+  local encoded_src
+  -- accpet also schemas as encoding
+  if ZEN.schemas[uscore(src_enc)] then
+      if uscore(src_enc) ~= src_codec.schema then
+          error("Source schema: "..src_codec.schema.." does not match encoding "..src_enc)
+      end
+      if f_src_enc == default_export_f then
+          f_src_enc = function (obj)
+              if luatype(obj) == "table" then
+                  return deepmap(CONF.output.encoding.fun, obj)
+              else
+                  return CONF.output.encoding.fun(obj)
+              end
+          end
+      end
+      if src_codec.zentype == "e" then
+          encoded_src = f_src_enc(src_value)
+      else
+          encoded_src = {}
+          for k,v in src_value do
+              encoded_src[k] = f_src_enc(src_value)
+          end
+      end
+  else
+      encoded_src = deepmap(f_src_enc, src_value)
+  end
+  f_dest_enc = input_encoding(dest_enc)
+  if not f_dest_enc then error("Destination encoding format not found: "..dest_enc, 2) end
+  return deepmap(f_dest_enc.fun, encoded_src)
+end

src/lua/zencode_table.lua

@@ -20,47 +20,12 @@
 --on Monday, 28th August 2023
 --]]
 
-local function encode_from_to(src_name, src_enc, dest_enc)
-    local src_value, src_codec = have(src_name)
-    f_src_enc = get_encoding_function(src_enc)
-    if not f_src_enc then error("Encoding format not found: "..src_enc, 2) end
-    local encoded_src
-    -- accpet also schemas as encoding
-    if ZEN.schemas[uscore(src_enc)] then
-        if uscore(src_enc) ~= src_codec.schema then
-            error("Source schema: "..src_codec.schema.." does not match encoding "..src_enc)
-        end
-        if f_src_enc == default_export_f then
-            f_src_enc = function (obj)
-                if luatype(obj) == "table" then
-                    return deepmap(CONF.output.encoding.fun, obj)
-                else
-                    return CONF.output.encoding.fun(obj)
-                end
-            end
-        end
-        if src_codec.zentype == "e" then
-            encoded_src = I.spy(f_src_enc(I.spy(src_value)))
-        else
-            encoded_src = {}
-            for k,v in src_value do
-                encoded_src[k] = f_src_enc(src_value)
-            end
-        end
-    else
-        encoded_src = deepmap(f_src_enc, src_value)
-    end
-    f_dest_enc = input_encoding(dest_enc)
-    if not f_dest_enc then error("Destination encoding format not found: "..dest_enc, 2) end
-    return deepmap(f_dest_enc.fun, I.spy(encoded_src))
-end
-
 local function move_or_copy_in(src_value, src_name, dest, new, enc)
     local d, cdest = have(dest)
     if luatype(d) ~= 'table' then error("Object is not a table: "..dest, 2) end
     local new_name = new or src_name
     if enc then
-        src_value = encode_from_to(src_name, enc, cdest.encoding)
+        src_value = apply_encoding(src_name, enc, cdest.encoding)
     end
     if cdest.zentype == 'e' and cdest.schema then
         local sdest = ZEN.schemas[cdest.schema]

src/lua/zencode_when.lua

@@ -227,11 +227,33 @@ When("create '' string of ''", function(encoding, src)
 							  encoding = 'string' })
 end)
 
-When("copy '' to ''", function(old,new)
-	have(old)
-	empty(new)
-	ACK[new] = deepcopy(ACK[old])
-	new_codec(new, { }, old)
+local function move_or_copy_to(src, dest, enc)
+    empty(dest)
+    if not enc then
+        ACK[dest] = deepcopy(ACK[src])
+        new_codec(dest, { }, src)
+    else
+        ACK[dest] = apply_encoding(src, enc, "string")
+        new_codec(dest, { encoding = 'string' })
+    end
+end
+
+When("copy '' to ''", move_or_copy_to)
+
+When("copy '' as '' to ''", function(src, enc, dest)
+    move_or_copy_to(src, dest, enc)
+end)
+
+When("move '' to ''", function(src, dest)
+    move_or_copy_to(src, dest)
+    ACK[src] = nil
+    CODEC[src] = nil
+end)
+
+When("move '' as '' to ''", function(src, enc, dest)
+    move_or_copy_to(src, dest, enc)
+    ACK[src] = nil
+    CODEC[src] = nil
 end)
 
 When("copy contents of '' in ''", function(src,dst)

test/zencode/when.bats

@@ -376,3 +376,28 @@ EOF
     assert_line --partial 'To copy/move element in existing element use:'
     assert_line --partial "When I move/copy '' from '' in ''"
 }
+
+@test "move/copy as to" {
+    cat <<EOF | save_asset move_from_to_existing_obj.data.json
+{
+    "base64_string": "aGVsbG8gbXkgZnJpZW5k",
+    "ecdh_signature": {
+        "r":"d2tYw0FFyVU7UjX+IRpiN8SLkLR4S8bYZmCwI2rzurI=",
+        "s":"vUljXtnKkBqle/Ik7y3GfMa1o3wEIi4lRC+b/KmVbaI="
+    }
+}
+EOF
+    cat <<EOF | zexe move_copy_as_to.zen move_from_to_existing_obj.data.json
+Scenario 'ecdh': sign
+Given I have a 'ecdh signature'
+and I have a 'base64' named 'base64_string'
+
+When I copy 'base64_string' as 'string' to 'string_from_base64'
+When I move 'ecdh signature' as 'ecdh signature' to 'new_ecdh_siganture_with_string_encoding'
+
+Then print the 'string_from_base64'
+Then print the 'new_ecdh_siganture_with_string_encoding'
+EOF
+    save_output move_from_to_existing_obj.out.json
+    assert_output '{"new_ecdh_siganture_with_string_encoding":{"r":"d2tYw0FFyVU7UjX+IRpiN8SLkLR4S8bYZmCwI2rzurI=","s":"vUljXtnKkBqle/Ik7y3GfMa1o3wEIi4lRC+b/KmVbaI="},"string_from_base64":"hello my friend"}'
+}