Tests: gather deserializeJson() errors test cases

2025-07-29 18:27:37 +02:00 · 2023-07-27 14:52:58 +02:00
parent db5b5f9ee2
commit 8fb187baed
5 changed files with 120 additions and 147 deletions
--- a/extras/tests/JsonDeserializer/errors.cpp
+++ b/extras/tests/JsonDeserializer/errors.cpp
@ -0,0 +1,103 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2023, Benoit BLANCHON
+// MIT License
+
+#define ARDUINOJSON_DECODE_UNICODE 1
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("deserializeJson() returns IncompleteInput") {
+  const char* testCases[] = {
+      // strings
+      "\"\\",
+      "\"hello",
+      "\'hello",
+      // unicode
+      "'\\u",
+      "'\\u00",
+      "'\\u000",
+      // false
+      "f",
+      "fa",
+      "fal",
+      "fals",
+      // true
+      "t",
+      "tr",
+      "tru",
+      // null
+      "n",
+      "nu",
+      "nul",
+      // object
+      "{",
+      "{a",
+      "{a:",
+      "{a:1",
+      "{a:1,",
+      "{a:1,b",
+      "{a:1,b:",
+  };
+
+  for (auto input : testCases) {
+    SECTION(input) {
+      JsonDocument doc;
+      REQUIRE(deserializeJson(doc, input) ==
+              DeserializationError::IncompleteInput);
+    }
+  }
+}
+
+TEST_CASE("deserializeJson() returns InvalidInput") {
+  const char* testCases[] = {
+      // unicode
+      "'\\u'", "'\\u000g'", "'\\u000'", "'\\u000G'", "'\\u000/'", "\\x1234",
+      // numbers
+      "6a9", "1,", "2]", "3}",
+      // constants
+      "nulL", "tru3", "fals3",
+      // garbage
+      "%*$£¤"};
+
+  for (auto input : testCases) {
+    SECTION(input) {
+      JsonDocument doc;
+      REQUIRE(deserializeJson(doc, input) ==
+              DeserializationError::InvalidInput);
+    }
+  }
+}
+
+TEST_CASE("deserializeJson() oversees some edge cases") {
+  const char* testCases[] = {
+      "'\\ud83d'",         // leading surrogate without a trailing surrogate
+      "'\\udda4'",         // trailing surrogate without a leading surrogate
+      "'\\ud83d\\ud83d'",  // two leading surrogates
+  };
+
+  for (auto input : testCases) {
+    SECTION(input) {
+      JsonDocument doc;
+      REQUIRE(deserializeJson(doc, input) == DeserializationError::Ok);
+    }
+  }
+}
+
+TEST_CASE("deserializeJson() returns EmptyInput") {
+  JsonDocument doc;
+
+  SECTION("null") {
+    auto err = deserializeJson(doc, static_cast<const char*>(0));
+    REQUIRE(err == DeserializationError::EmptyInput);
+  }
+
+  SECTION("Empty string") {
+    auto err = deserializeJson(doc, "");
+    REQUIRE(err == DeserializationError::EmptyInput);
+  }
+
+  SECTION("Only spaces") {
+    auto err = deserializeJson(doc, "  \t\n\r");
+    REQUIRE(err == DeserializationError::EmptyInput);
+  }
+}