unity-tests: parse_string

tests/CMakeLists.txt

@@ -10,6 +10,7 @@ if(ENABLE_CJSON_TEST)
         parse_examples
         parse_number
         parse_hex4
+        parse_string
     )
 
     foreach(unity_test ${unity_tests})

tests/parse_string.c

@@ -0,0 +1,111 @@
+/*
+  Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "unity/examples/unity_config.h"
+#include "unity/src/unity.h"
+#include "../cJSON.c"
+
+static cJSON item[1];
+
+static const unsigned char *error_pointer = NULL;
+
+static void assert_is_string(cJSON *string_item)
+{
+    TEST_ASSERT_NOT_NULL_MESSAGE(string_item, "Item is NULL.");
+
+    TEST_ASSERT_NULL_MESSAGE(string_item->next, "Linked list next pointer is not NULL.");
+    TEST_ASSERT_NULL_MESSAGE(string_item->prev, "Linked list previous pointer is not NULL");
+    TEST_ASSERT_NULL_MESSAGE(string_item->child, "Child pointer is not NULL.");
+    TEST_ASSERT_BITS_MESSAGE(0xFF, cJSON_String, string_item->type, "Item type is not string.");
+    TEST_ASSERT_BITS_MESSAGE(cJSON_IsReference, 1, string_item->type, "Item should have a string as reference.");
+    TEST_ASSERT_BITS_MESSAGE(cJSON_StringIsConst, 0, string_item->type, "Item should not have a const string.");
+    TEST_ASSERT_NOT_NULL_MESSAGE(string_item->valuestring, "Valuestring is NULL.");
+    TEST_ASSERT_NULL_MESSAGE(string_item->string, "String is not NULL.");
+}
+
+static void assert_parse_string(const char *string, const char *expected)
+{
+    TEST_ASSERT_NOT_NULL_MESSAGE(parse_string(item, (const unsigned char*)string, &error_pointer), "Couldn't parse string.");
+    assert_is_string(item);
+    TEST_ASSERT_EQUAL_STRING_MESSAGE(expected, item->valuestring, "The parsed result isn't as expected.");
+    cJSON_free(item->valuestring);
+    item->valuestring = NULL;
+}
+
+static void parse_string_should_parse_strings(void)
+{
+    assert_parse_string("\"\"", "");
+    assert_parse_string(
+        "\" !\\\"#$%&'()*+,-./\\/0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_'abcdefghijklmnopqrstuvwxyz{|}~\"",
+        " !\"#$%&'()*+,-.//0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_'abcdefghijklmnopqrstuvwxyz{|}~");
+    assert_parse_string(
+        "\"\\\"\\\\\\/\\b\\f\\n\\r\\t\\u20AC\\u732b\"",
+        "\"\\/\b\f\n\r\t€猫");
+    assert_parse_string("\"\b\f\n\r\t\"", "\b\f\n\r\t");
+}
+
+static void parse_string_should_parse_utf16_surrogate_pairs(void)
+{
+    assert_parse_string("\"\\uD83D\\udc31\"", "🐱");
+}
+
+static void parse_string_should_not_parse_non_strings(void)
+{
+    TEST_ASSERT_NULL(parse_string(item, (const unsigned char*)"this\" is not a string\"", &error_pointer));
+    TEST_ASSERT_NULL(parse_string(item, (const unsigned char*) "", &error_pointer));
+}
+
+static void parse_string_should_not_parse_invalid_backslash(void)
+{
+    TEST_ASSERT_NULL_MESSAGE(parse_string(item, (const unsigned char*)"Abcdef\\123", &error_pointer), "Invalid backshlash should not be accepted.");
+    TEST_ASSERT_NULL_MESSAGE(parse_string(item, (const unsigned char*)"Abcdef\\e23", &error_pointer), "Invalid backshlash should not be accepted.");
+}
+
+static void parse_string_should_not_overflow_with_closing_backslash(void)
+{
+    TEST_ASSERT_NULL_MESSAGE(parse_string(item, (const unsigned char*)"\"000000000000000000\\", &error_pointer), "Malformed string should not be accepted.");
+}
+
+static void parse_string_should_parse_bug_94(void)
+{
+    const char string[] = "\"~!@\\\\#$%^&*()\\\\\\\\-\\\\+{}[]:\\\\;\\\\\\\"\\\\<\\\\>?/.,DC=ad,DC=com\"";
+    assert_parse_string(string, "~!@\\#$%^&*()\\\\-\\+{}[]:\\;\\\"\\<\\>?/.,DC=ad,DC=com");
+}
+
+int main(void)
+{
+    /* initialize cJSON item and error pointer */
+    memset(item, 0, sizeof(cJSON));
+
+    UNITY_BEGIN();
+    RUN_TEST(parse_string_should_parse_strings);
+    RUN_TEST(parse_string_should_parse_utf16_surrogate_pairs);
+    RUN_TEST(parse_string_should_not_parse_non_strings);
+    RUN_TEST(parse_string_should_not_parse_invalid_backslash);
+    RUN_TEST(parse_string_should_parse_bug_94);
+    RUN_TEST(parse_string_should_not_overflow_with_closing_backslash);
+    return UNITY_END();
+}