Add getNumberValue function

* Add GetNumberValue function and testcase

Co-authored-by: Alan Wang <wp_scut@163.com>

.gitignore

@@ -14,3 +14,5 @@ libcjson.so.*
 libcjson_utils.so.*
 *.orig
 .vscode
+.idea
+cmake-build-debug

CMakeLists.txt

@@ -64,7 +64,6 @@ if (ENABLE_SANITIZERS)
         -fno-omit-frame-pointer
         -fsanitize=address
         -fsanitize=undefined
-        -fsanitize=float-divide-by-zero
         -fsanitize=float-cast-overflow
         -fsanitize-address-use-after-scope
         -fsanitize=integer

README.md

@@ -245,6 +245,12 @@ Given some JSON in a zero terminated string, you can parse it with `cJSON_Parse`
 cJSON *json = cJSON_Parse(string);
 ```
 
+Given some JSON in a string (whether zero terminated or not), you can parse it with `cJSON_ParseWithLength`.
+
+```c
+cJSON *json = cJSON_ParseWithLength(string, buffer_length);
+```
+
 It will parse the JSON and allocate a tree of `cJSON` items that represents it. Once it returns, you are fully responsible for deallocating it after use with `cJSON_Delete`.
 
 The allocator used by `cJSON_Parse` is `malloc` and `free` by default but can be changed (globally) with `cJSON_InitHooks`.
@@ -255,6 +261,8 @@ By default, characters in the input string that follow the parsed JSON will not
 If you want more options, use `cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated)`.
 `return_parse_end` returns a pointer to the end of the JSON in the input string or the position that an error occurs at (thereby replacing `cJSON_GetErrorPtr` in a thread safe way). `require_null_terminated`, if set to `1` will make it an error if the input string contains data after the JSON.
 
+If you want more options giving buffer length, use `cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated)`.
+
 ### Printing JSON
 
 Given a tree of `cJSON` items, you can print them as a string using `cJSON_Print`.

cJSON.c

@@ -39,7 +39,6 @@
 
 #include <string.h>
 #include <stdio.h>
-#include <math.h>
 #include <stdlib.h>
 #include <limits.h>
 #include <ctype.h>
@@ -72,14 +71,26 @@ CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void)
     return (const char*) (global_error.json + global_error.position);
 }
 
-CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item) {
-    if (!cJSON_IsString(item)) {
+CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item) 
+{
+    if (!cJSON_IsString(item)) 
+    {
         return NULL;
     }
 
     return item->valuestring;
 }
 
+CJSON_PUBLIC(double) cJSON_GetNumberValue(cJSON *item) 
+{
+    if (!cJSON_IsNumber(item)) 
+    {
+        return 0.0/0.0;
+    }
+
+    return item->valuedouble;
+}
+
 /* This is a safeguard to prevent copy-pasters from using incompatible C and header files */
 #if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 7) || (CJSON_VERSION_PATCH != 7)
     #error cJSON.h and cJSON.c have different versions. Make sure that both have the same.
@@ -234,6 +245,20 @@ CJSON_PUBLIC(void) cJSON_Delete(cJSON *item)
     }
 }
 
+static int double_to_saturated_integer(double number)
+{
+    if (number >= INT_MAX)
+    {
+        return INT_MAX;
+    }
+    else if (number <= INT_MIN)
+    {
+        return INT_MIN;
+    }
+
+    return (int)number;
+}
+
 /* get the decimal point character of the current locale */
 static unsigned char get_decimal_point(void)
 {
@@ -255,9 +280,9 @@ typedef struct
 } parse_buffer;
 
 /* check if the given size is left to read in a given parse buffer (starting with 1) */
-#define can_read(buffer, size) ((buffer != NULL) && (((buffer)->offset + size) <= (buffer)->length))
+#define can_read(buffer, size) (((buffer)->offset + (size)) <= (buffer)->length)
 /* check if the buffer can be accessed at the given index (starting with 0) */
-#define can_access_at_index(buffer, index) ((buffer != NULL) && (((buffer)->offset + index) < (buffer)->length))
+#define can_access_at_index(buffer, index) (((buffer)->offset + (index)) < (buffer)->length)
 #define cannot_access_at_index(buffer, index) (!can_access_at_index(buffer, index))
 /* get a pointer to the buffer at the position */
 #define buffer_at_offset(buffer) ((buffer)->content + (buffer)->offset)
@@ -318,21 +343,7 @@ loop_end:
     }
 
     item->valuedouble = number;
-
-    /* use saturation in case of overflow */
-    if (number >= INT_MAX)
-    {
-        item->valueint = INT_MAX;
-    }
-    else if (number <= INT_MIN)
-    {
-        item->valueint = INT_MIN;
-    }
-    else
-    {
-        item->valueint = (int)number;
-    }
-
+    item->valueint = double_to_saturated_integer(number);
     item->type = cJSON_Number;
 
     input_buffer->offset += (size_t)(after_end - number_c_string);
@@ -342,18 +353,7 @@ loop_end:
 /* don't ask me, but the original cJSON_SetNumberValue returns an integer or double */
 CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number)
 {
-    if (number >= INT_MAX)
-    {
-        object->valueint = INT_MAX;
-    }
-    else if (number <= INT_MIN)
-    {
-        object->valueint = INT_MIN;
-    }
-    else
-    {
-        object->valueint = (int)number;
-    }
+    object->valueint = double_to_saturated_integer(number);
 
     return object->valuedouble = number;
 }
@@ -470,11 +470,15 @@ static void update_offset(printbuffer * const buffer)
     buffer->offset += strlen((const char*)buffer_pointer);
 }
 
+#define is_nan(number) ((number) != (number))
+#define is_infinity(number) (!is_nan(number) && ((number) * 0) != 0)
+
 /* Render the number nicely from the given item into a string. */
 static cJSON_bool print_number(const cJSON * const item, printbuffer * const output_buffer)
 {
     unsigned char *output_pointer = NULL;
-    double d = item->valuedouble;
+    double number = item->valuedouble;
+    int integer = double_to_saturated_integer(number);
     int length = 0;
     size_t i = 0;
     unsigned char number_buffer[26]; /* temporary buffer to print the number into */
@@ -486,21 +490,24 @@ static cJSON_bool print_number(const cJSON * const item, printbuffer * const out
         return false;
     }
 
-    /* This checks for NaN and Infinity */
-    if ((d * 0) != 0)
+    if (is_nan(number) || is_infinity(number))
     {
         length = sprintf((char*)number_buffer, "null");
     }
+    else if (number == integer) /* avoid overhead for integers */
+    {
+        length = sprintf((char*)number_buffer, "%d", integer);
+    }
     else
     {
         /* Try 15 decimal places of precision to avoid nonsignificant nonzero digits */
-        length = sprintf((char*)number_buffer, "%1.15g", d);
+        length = sprintf((char*)number_buffer, "%1.15g", number);
 
         /* Check whether the original double can be recovered */
-        if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || ((double)test != d))
+        if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || ((double)test != number))
         {
             /* If not, print with 17 decimal places of precision */
-            length = sprintf((char*)number_buffer, "%1.17g", d);
+            length = sprintf((char*)number_buffer, "%1.17g", number);
         }
     }
 
@@ -841,12 +848,13 @@ static cJSON_bool print_string_ptr(const unsigned char * const input, printbuffe
     /* empty string */
     if (input == NULL)
     {
-        output = ensure(output_buffer, sizeof("\"\""));
+        const char quotes[] = "\"\"";
+        output = ensure(output_buffer, sizeof(quotes));
         if (output == NULL)
         {
             return false;
         }
-        strcpy((char*)output, "\"\"");
+        memcpy(output, quotes, sizeof(quotes));
 
         return true;
     }
@@ -967,6 +975,11 @@ static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
         return NULL;
     }
 
+    if (cannot_access_at_index(buffer, 0))
+    {
+        return buffer;
+    }
+
     while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32))
     {
        buffer->offset++;
@@ -996,8 +1009,23 @@ static parse_buffer *skip_utf8_bom(parse_buffer * const buffer)
     return buffer;
 }
 
-/* Parse an object - create a new root, and populate. */
 CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated)
+{
+    size_t buffer_length;
+
+    if (NULL == value)
+    {
+        return NULL;
+    }
+
+    /* Adding null character size due to require_null_terminated. */
+    buffer_length = strlen(value) + sizeof("");
+
+    return cJSON_ParseWithLengthOpts(value, buffer_length, return_parse_end, require_null_terminated);
+}
+
+/* Parse an object - create a new root, and populate. */
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated)
 {
     parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } };
     cJSON *item = NULL;
@@ -1006,13 +1034,13 @@ CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return
     global_error.json = NULL;
     global_error.position = 0;
 
-    if (value == NULL)
+    if (value == NULL || 0 == buffer_length)
     {
         goto fail;
     }
 
     buffer.content = (const unsigned char*)value;
-    buffer.length = strlen((const char*)value) + sizeof("");
+    buffer.length = buffer_length; 
     buffer.offset = 0;
     buffer.hooks = global_hooks;
 
@@ -1082,7 +1110,12 @@ CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value)
     return cJSON_ParseWithOpts(value, 0, 0);
 }
 
-#define cjson_min(a, b) ((a < b) ? a : b)
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length)
+{
+    return cJSON_ParseWithLengthOpts(value, buffer_length, 0, 0);
+}
+
+#define cjson_min(a, b) (((a) < (b)) ? (a) : (b))
 
 static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks)
 {
@@ -1109,6 +1142,8 @@ static unsigned char *print(const cJSON * const item, cJSON_bool format, const i
     }
     update_offset(buffer);
 
+    /* Reallocate the buffer so that it only uses as much as it needs.
+        This can save up to 50% because ensure increases the buffer size by a factor of 2 */
     /* check if reallocate is available */
     if (hooks->reallocate != NULL)
     {
@@ -1189,20 +1224,20 @@ CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON
     return (char*)p.buffer;
 }
 
-CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buf, const int len, const cJSON_bool fmt)
+CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format)
 {
     printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } };
 
-    if ((len < 0) || (buf == NULL))
+    if ((length < 0) || (buffer == NULL))
     {
         return false;
     }
 
-    p.buffer = (unsigned char*)buf;
-    p.length = (size_t)len;
+    p.buffer = (unsigned char*)buffer;
+    p.length = (size_t)length;
     p.offset = 0;
     p.noalloc = true;
-    p.format = fmt;
+    p.format = format;
     p.hooks = global_hooks;
 
     return print_value(item, &p);
@@ -1216,51 +1251,75 @@ static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buf
         return false; /* no input */
     }
 
-    /* parse the different types of values */
-    /* null */
-    if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "null", 4) == 0))
+    if (!can_read(input_buffer, 1))
     {
-        item->type = cJSON_NULL;
-        input_buffer->offset += 4;
-        return true;
-    }
-    /* false */
-    if (can_read(input_buffer, 5) && (strncmp((const char*)buffer_at_offset(input_buffer), "false", 5) == 0))
-    {
-        item->type = cJSON_False;
-        input_buffer->offset += 5;
-        return true;
-    }
-    /* true */
-    if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "true", 4) == 0))
-    {
-        item->type = cJSON_True;
-        item->valueint = 1;
-        input_buffer->offset += 4;
-        return true;
-    }
-    /* string */
-    if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '\"'))
-    {
-        return parse_string(item, input_buffer);
-    }
-    /* number */
-    if (can_access_at_index(input_buffer, 0) && ((buffer_at_offset(input_buffer)[0] == '-') || ((buffer_at_offset(input_buffer)[0] >= '0') && (buffer_at_offset(input_buffer)[0] <= '9'))))
-    {
-        return parse_number(item, input_buffer);
-    }
-    /* array */
-    if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '['))
-    {
-        return parse_array(item, input_buffer);
-    }
-    /* object */
-    if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '{'))
-    {
-        return parse_object(item, input_buffer);
+        return false;
     }
 
-    return false;
+    /* parse the different types of values */
+    switch (buffer_at_offset(input_buffer)[0])
+    {
+        /* number */
+        case '-':
+        case '0':
+        case '1':
+        case '2':
+        case '3':
+        case '4':
+        case '5':
+        case '6':
+        case '7':
+        case '8':
+        case '9':
+            return parse_number(item, input_buffer);
+
+        /* string */
+        case '\"':
+            return parse_string(item, input_buffer);
+
+        /* array */
+        case '[':
+            return parse_array(item, input_buffer);
+
+        /* object */
+        case '{':
+            return parse_object(item, input_buffer);
+
+        /* null */
+        case 'n':
+            if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "null", 4) == 0))
+            {
+                item->type = cJSON_NULL;
+                input_buffer->offset += 4;
+                return true;
+            }
+            return false;
+
+        /* true */
+        case 't':
+            if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "true", 4) == 0))
+            {
+                item->type = cJSON_True;
+                item->valueint = 1;
+                input_buffer->offset += 4;
+                return true;
+            }
+            return false;
+
+        /* false */
+        case 'f':
+            if (can_read(input_buffer, 5) && (strncmp((const char*)buffer_at_offset(input_buffer), "false", 5) == 0))
+            {
+                item->type = cJSON_False;
+                input_buffer->offset += 5;
+                return true;
+            }
+            return false;
+
+
+        default:
+            return false;
+    }
 }
 
 /* Render a value to text. */
@@ -1276,31 +1335,40 @@ static cJSON_bool print_value(const cJSON * const item, printbuffer * const outp
     switch ((item->type) & 0xFF)
     {
         case cJSON_NULL:
-            output = ensure(output_buffer, 5);
+        {
+            const char null_string[] = "null";
+            output = ensure(output_buffer, sizeof(null_string));
             if (output == NULL)
             {
                 return false;
             }
-            strcpy((char*)output, "null");
+            memcpy(output, null_string, sizeof(null_string));
             return true;
+        }
 
         case cJSON_False:
-            output = ensure(output_buffer, 6);
+        {
+            const char false_string[] = "false";
+            output = ensure(output_buffer, sizeof(false_string));
             if (output == NULL)
             {
                 return false;
             }
-            strcpy((char*)output, "false");
+            memcpy(output, false_string, sizeof(false_string));
             return true;
+        }
 
         case cJSON_True:
-            output = ensure(output_buffer, 5);
+        {
+            const char true_string[] = "true";
+            output = ensure(output_buffer, sizeof(true_string));
             if (output == NULL)
             {
                 return false;
             }
-            strcpy((char*)output, "true");
+            memcpy(output, true_string, sizeof(true_string));
             return true;
+        }
 
         case cJSON_Number:
             return print_number(item, output_buffer);
@@ -1716,8 +1784,7 @@ static cJSON_bool print_object(const cJSON * const item, printbuffer * const out
     return true;
 }
 
-/* Get Array size/item / object item. */
-CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array)
+static size_t get_array_size(const cJSON * const array)
 {
     cJSON *child = NULL;
     size_t size = 0;
@@ -1729,13 +1796,25 @@ CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array)
 
     child = array->child;
 
-    while(child != NULL)
+    while (child != NULL)
     {
         size++;
         child = child->next;
     }
 
-    /* FIXME: Can overflow here. Cannot be fixed without breaking the API */
+    return size;
+}
+
+/* Get Array size/item / object item. */
+CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array)
+{
+    size_t size = get_array_size(array);
+
+    if (size > INT_MAX)
+    {
+        /* This is incorrect but can't be fixed without breaking the API */
+        return INT_MAX;
+    }
 
     return (int)size;
 }
@@ -2276,12 +2355,12 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void)
     return item;
 }
 
-CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool b)
+CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean)
 {
     cJSON *item = cJSON_New_Item(&global_hooks);
     if(item)
     {
-        item->type = b ? cJSON_True : cJSON_False;
+        item->type = boolean ? cJSON_True : cJSON_False;
     }
 
     return item;
@@ -2294,20 +2373,7 @@ CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num)
     {
         item->type = cJSON_Number;
         item->valuedouble = num;
-
-        /* use saturation in case of overflow */
-        if (num >= INT_MAX)
-        {
-            item->valueint = INT_MAX;
-        }
-        else if (num <= INT_MIN)
-        {
-            item->valueint = INT_MIN;
-        }
-        else
-        {
-            item->valueint = (int)num;
-        }
+        item->valueint = double_to_saturated_integer(num);
     }
 
     return item;
@@ -2882,6 +2948,14 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
         {
             cJSON *a_element = NULL;
             cJSON *b_element = NULL;
+            size_t a_size = get_array_size(a);
+            size_t b_size = get_array_size(b);
+
+            if (a_size != b_size)
+            {
+                return false;
+            }
+
             cJSON_ArrayForEach(a_element, a)
             {
                 /* TODO This has O(n^2) runtime, which is horrible! */
@@ -2897,22 +2971,6 @@ CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * cons
                 }
             }
 
-            /* doing this twice, once on a and b to prevent true comparison if a subset of b
-             * TODO: Do this the proper way, this is just a fix for now */
-            cJSON_ArrayForEach(b_element, b)
-            {
-                a_element = get_object_item(a, b_element->string, case_sensitive);
-                if (a_element == NULL)
-                {
-                    return false;
-                }
-
-                if (!cJSON_Compare(b_element, a_element, case_sensitive))
-                {
-                    return false;
-                }
-            }
-
             return true;
         }
 

cJSON.h

@@ -138,9 +138,11 @@ CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks);
 /* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */
 /* Supply a block of JSON, and this returns a cJSON object you can interrogate. */
 CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value);
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLength(const char *value, size_t buffer_length);
 /* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */
 /* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */
 CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated);
+CJSON_PUBLIC(cJSON *) cJSON_ParseWithLengthOpts(const char *value, size_t buffer_length, const char **return_parse_end, cJSON_bool require_null_terminated);
 
 /* Render a cJSON entity to text for transfer/storage. */
 CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item);
@@ -152,7 +154,7 @@ CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON
 /* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */
 CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format);
 /* Delete a cJSON entity and all subentities. */
-CJSON_PUBLIC(void) cJSON_Delete(cJSON *c);
+CJSON_PUBLIC(void) cJSON_Delete(cJSON *item);
 
 /* Returns the number of items in an array (or object). */
 CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array);
@@ -165,8 +167,9 @@ CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *st
 /* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
 CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);
 
-/* Check if the item is a string and return its valuestring */
+/* Check item type and return its value */
 CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON *item);
+CJSON_PUBLIC(double) cJSON_GetNumberValue(cJSON *item);
 
 /* These functions check the type of an item */
 CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);

tests/misc_tests.c

@@ -463,6 +463,19 @@ static void cjson_get_string_value_should_get_a_string(void)
     cJSON_Delete(string);
 }
 
+static void cjson_get_number_value_should_get_a_number(void)
+{
+    cJSON *string = cJSON_CreateString("test");
+    cJSON *number = cJSON_CreateNumber(1);
+
+    TEST_ASSERT_EQUAL_DOUBLE(cJSON_GetNumberValue(number), number->valuedouble);
+    TEST_ASSERT_DOUBLE_IS_NAN(cJSON_GetNumberValue(string));
+    TEST_ASSERT_DOUBLE_IS_NAN(cJSON_GetNumberValue(NULL));
+    
+    cJSON_Delete(number);
+    cJSON_Delete(string);
+}
+
 static void cjson_create_string_reference_should_create_a_string_reference(void) {
     const char *string = "I am a string!";
 
@@ -527,6 +540,24 @@ static void cjson_add_item_to_object_should_not_use_after_free_when_string_is_al
     cJSON_Delete(object);
 }
 
+static void is_nan_should_detect_nan(void)
+{
+    double nan = 0.0/0.0;
+
+    TEST_ASSERT_TRUE(is_nan(nan));
+    TEST_ASSERT_FALSE(is_nan(1));
+}
+
+static void is_infinity_should_detect_infinity(void)
+{
+    double negative_infinity = -1.0/0.0;
+    double positive_infinity = 1.0/0.0;
+
+    TEST_ASSERT_TRUE(is_infinity(negative_infinity));
+    TEST_ASSERT_TRUE(is_infinity(positive_infinity));
+    TEST_ASSERT_FALSE(is_infinity(1));
+}
+
 int main(void)
 {
     UNITY_BEGIN();
@@ -546,10 +577,13 @@ int main(void)
     RUN_TEST(skip_utf8_bom_should_skip_bom);
     RUN_TEST(skip_utf8_bom_should_not_skip_bom_if_not_at_beginning);
     RUN_TEST(cjson_get_string_value_should_get_a_string);
+    RUN_TEST(cjson_get_number_value_should_get_a_number);
     RUN_TEST(cjson_create_string_reference_should_create_a_string_reference);
     RUN_TEST(cjson_create_object_reference_should_create_an_object_reference);
     RUN_TEST(cjson_create_array_reference_should_create_an_array_reference);
     RUN_TEST(cjson_add_item_to_object_should_not_use_after_free_when_string_is_aliased);
+    RUN_TEST(is_nan_should_detect_nan);
+    RUN_TEST(is_infinity_should_detect_infinity);
 
     return UNITY_END();
 }

tests/parse_examples.c

@@ -195,6 +195,61 @@ static void test12_should_not_be_parsed(void)
     }
 }
 
+static void test13_should_be_parsed_without_null_termination(void)
+{
+    cJSON *tree = NULL;
+    const char test_13[] = "{" \
+                                "\"Image\":{" \
+                                    "\"Width\":800," \
+                                    "\"Height\":600," \
+                                    "\"Title\":\"Viewfrom15thFloor\"," \
+                                    "\"Thumbnail\":{" \
+                                        "\"Url\":\"http:/*www.example.com/image/481989943\"," \
+                                        "\"Height\":125," \
+                                        "\"Width\":\"100\"" \
+                                    "}," \
+                                    "\"IDs\":[116,943,234,38793]" \
+                                "}" \
+                            "}";
+
+    char test_13_wo_null[sizeof(test_13) - 1];
+    memcpy(test_13_wo_null, test_13, sizeof(test_13) - 1);
+
+    tree = cJSON_ParseWithLength(test_13_wo_null, sizeof(test_13) - 1);
+    TEST_ASSERT_NOT_NULL_MESSAGE(tree, "Failed to parse valid json.");
+
+    if (tree != NULL)
+    {
+        cJSON_Delete(tree);
+    }
+}
+
+static void test14_should_not_be_parsed(void)
+{
+    cJSON *tree = NULL;
+    const char test_14[] = "{" \
+                                "\"Image\":{" \
+                                    "\"Width\":800," \
+                                    "\"Height\":600," \
+                                    "\"Title\":\"Viewfrom15thFloor\"," \
+                                    "\"Thumbnail\":{" \
+                                        "\"Url\":\"http:/*www.example.com/image/481989943\"," \
+                                        "\"Height\":125," \
+                                        "\"Width\":\"100\"" \
+                                    "}," \
+                                    "\"IDs\":[116,943,234,38793]" \
+                                "}" \
+                            "}";
+
+    tree = cJSON_ParseWithLength(test_14, sizeof(test_14) - 2);
+    TEST_ASSERT_NULL_MESSAGE(tree, "Should not continue after buffer_length is reached.");
+
+    if (tree != NULL)
+    {
+        cJSON_Delete(tree);
+    }
+}
+
 int main(void)
 {
     UNITY_BEGIN();
@@ -210,5 +265,7 @@ int main(void)
     RUN_TEST(file_test10_should_be_parsed_and_printed);
     RUN_TEST(file_test11_should_be_parsed_and_printed);
     RUN_TEST(test12_should_not_be_parsed);
+    RUN_TEST(test13_should_be_parsed_without_null_termination);
+    RUN_TEST(test14_should_not_be_parsed);
     return UNITY_END();
 }