Add tests for Note Transactions that check that both UTF-8 encoded st…

…rings will parse JSON objects, and that UTF-16 encoded strings generate an {io} error on JSON parse (#154)

test/src/NoteTransaction_test.cpp

@@ -194,6 +194,47 @@ SCENARIO("NoteTransaction")
         JDelete(resp);
     }
 
+    WHEN("The transaction is successful, and contains UTF-8 encoded characters in valid JSON"){
+        J* req = NoteNewRequest("web.get");
+        REQUIRE(req != NULL);
+        noteJSONTransaction_fake.custom_fake = [] (const char *, size_t, char **response, uint32_t) -> const char * {
+            const char rsp_str[] = "{\"area\":\"bí\"}";
+            *response = (char *)malloc(sizeof(rsp_str));
+            strncpy(*response, rsp_str, sizeof(rsp_str));
+            return nullptr;
+        };
+        J* resp = NoteTransaction(req);
+        THEN("An error is not returned") {
+            CHECK(resp != NULL);
+            CHECK(!JIsPresent(resp, "err"));
+        }
+
+        JDelete(req);
+        JDelete(resp);
+    }
+
+    WHEN("The transaction is successful, and contains UTF-16 encoded characters in valid JSON"){
+        J* req = NoteNewRequest("web.get");
+        REQUIRE(req != NULL);
+        noteJSONTransaction_fake.custom_fake = [] (const char *, size_t, char **response, uint32_t) -> const char * {
+            const uint8_t rsp_str[] = {0xff, 0xfe, 0x7b, 0x00, 0x22, 0x00, 0x61, 0x00, 0x72, 0x00, 0x65, 0x00, 0x61, 0x00, 0x22, 0x00, 0x3a, 0x00, 0x22, 0x00, 0x62, 0x00, 0xed, 0x00, 0x22, 0x00, 0x7d, 0x00};
+            *response = (char *)malloc(sizeof(rsp_str));
+            memcpy(*response, rsp_str, sizeof(rsp_str));
+            return nullptr;
+        };
+        J* resp = NoteTransaction(req);
+        THEN("An {io} error is returned") {
+            CHECK(resp != NULL);
+            CHECK(JIsPresent(resp, "err"));
+            CHECK(JContainsString(resp, "err", "{io}"));
+        }
+
+        JDelete(req);
+        JDelete(resp);
+    }
+
+
+
 #ifndef NOTE_C_LOW_MEM
     SECTION("Bad CRC") {
         J *req = NoteNewRequest("note.add");