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libvirt/tests/virjsontest.c
Peter Krempa a8b4a41731 util: json: Don't copy string in virJSONValueNewString 
With 'g_strdup' not needing error handling we can ask callers to pass a
copy of the string which will be adopted by the JSON value.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
2021-12-22 13:48:35 +01:00

618 lines
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#include <config.h>
#include <time.h>
#include "internal.h"
#include "virjson.h"
#include "testutils.h"
#define VIR_FROM_THIS VIR_FROM_NONE
struct testInfo {
const char *name;
const char *doc;
const char *expect;
bool pass;
};
static int
testJSONFromFile(const void *data)
{
const struct testInfo *info = data;
g_autoptr(virJSONValue) injson = NULL;
g_autofree char *infile = NULL;
g_autofree char *indata = NULL;
g_autofree char *outfile = NULL;
g_autofree char *actual = NULL;
infile = g_strdup_printf("%s/virjsondata/parse-%s-in.json",
abs_srcdir, info->name);
outfile = g_strdup_printf("%s/virjsondata/parse-%s-out.json",
abs_srcdir, info->name);
if (virTestLoadFile(infile, &indata) < 0)
return -1;
injson = virJSONValueFromString(indata);
if (!injson) {
if (info->pass) {
VIR_TEST_VERBOSE("Failed to parse %s", info->doc);
return -1;
} else {
VIR_TEST_DEBUG("As expected, failed to parse %s", info->doc);
return 0;
}
} else {
if (!info->pass) {
VIR_TEST_VERBOSE("Unexpected success while parsing %s", info->doc);
return -1;
}
}
if (!(actual = virJSONValueToString(injson, false)))
return -1;
if (virTestCompareToFile(actual, outfile) < 0)
return -1;
return 0;
}
static int
testJSONFromString(const void *data)
{
const struct testInfo *info = data;
g_autoptr(virJSONValue) json = NULL;
const char *expectstr = info->expect ? info->expect : info->doc;
g_autofree char *formatted = NULL;
json = virJSONValueFromString(info->doc);
if (!json) {
if (info->pass) {
VIR_TEST_VERBOSE("Failed to parse %s", info->doc);
return -1;
} else {
VIR_TEST_DEBUG("As expected, failed to parse %s", info->doc);
return 0;
}
} else {
if (!info->pass) {
VIR_TEST_VERBOSE("Unexpected success while parsing %s", info->doc);
return -1;
}
}
VIR_TEST_DEBUG("Parsed %s", info->doc);
if (!(formatted = virJSONValueToString(json, false))) {
VIR_TEST_VERBOSE("Failed to format json data");
return -1;
}
if (STRNEQ(expectstr, formatted)) {
virTestDifference(stderr, expectstr, formatted);
return -1;
}
return 0;
}
static int
testJSONAddRemove(const void *data)
{
const struct testInfo *info = data;
g_autoptr(virJSONValue) json = NULL;
g_autoptr(virJSONValue) name = NULL;
g_autofree char *infile = NULL;
g_autofree char *indata = NULL;
g_autofree char *outfile = NULL;
g_autofree char *actual = NULL;
infile = g_strdup_printf("%s/virjsondata/add-remove-%s-in.json",
abs_srcdir, info->name);
outfile = g_strdup_printf("%s/virjsondata/add-remove-%s-out.json",
abs_srcdir, info->name);
if (virTestLoadFile(infile, &indata) < 0)
return -1;
json = virJSONValueFromString(indata);
if (!json) {
VIR_TEST_VERBOSE("Fail to parse %s", info->name);
return -1;
}
switch (virJSONValueObjectRemoveKey(json, "name", &name)) {
case 1:
if (!info->pass) {
VIR_TEST_VERBOSE("should not remove from non-object %s",
info->name);
return -1;
}
break;
case -1:
if (!info->pass)
return 0;
else
VIR_TEST_VERBOSE("Fail to recognize non-object %s", info->name);
return -1;
default:
VIR_TEST_VERBOSE("unexpected result when removing from %s",
info->name);
return -1;
}
if (STRNEQ_NULLABLE(virJSONValueGetString(name), "sample")) {
VIR_TEST_VERBOSE("unexpected value after removing name: %s",
NULLSTR(virJSONValueGetString(name)));
return -1;
}
if (virJSONValueObjectRemoveKey(json, "name", NULL)) {
VIR_TEST_VERBOSE("%s",
"unexpected success when removing missing key");
return -1;
}
if (virJSONValueObjectAppendString(json, "newname", "foo") < 0) {
VIR_TEST_VERBOSE("%s", "unexpected failure adding new key");
return -1;
}
if (!(actual = virJSONValueToString(json, false))) {
VIR_TEST_VERBOSE("%s", "failed to stringize result");
return -1;
}
if (virTestCompareToFile(actual, outfile) < 0)
return -1;
return 0;
}
static int
testJSONLookup(const void *data)
{
const struct testInfo *info = data;
g_autoptr(virJSONValue) json = NULL;
virJSONValue *value = NULL;
g_autofree char *result = NULL;
int rc;
int number;
const char *str;
json = virJSONValueFromString(info->doc);
if (!json) {
VIR_TEST_VERBOSE("Fail to parse %s", info->doc);
return -1;
}
value = virJSONValueObjectGetObject(json, "a");
if (value) {
if (!info->pass) {
VIR_TEST_VERBOSE("lookup for 'a' in '%s' should have failed",
info->doc);
return -1;
} else {
result = virJSONValueToString(value, false);
if (STRNEQ_NULLABLE(result, "{}")) {
VIR_TEST_VERBOSE("lookup for 'a' in '%s' found '%s' but "
"should have found '{}'",
info->doc, NULLSTR(result));
return -1;
}
VIR_FREE(result);
}
} else if (info->pass) {
VIR_TEST_VERBOSE("lookup for 'a' in '%s' should have succeeded",
info->doc);
return -1;
}
number = 2;
rc = virJSONValueObjectGetNumberInt(json, "b", &number);
if (rc == 0) {
if (!info->pass) {
VIR_TEST_VERBOSE("lookup for 'b' in '%s' should have failed",
info->doc);
return -1;
} else if (number != 1) {
VIR_TEST_VERBOSE("lookup for 'b' in '%s' found %d but "
"should have found 1",
info->doc, number);
return -1;
}
} else if (info->pass) {
VIR_TEST_VERBOSE("lookup for 'b' in '%s' should have succeeded",
info->doc);
return -1;
}
str = virJSONValueObjectGetString(json, "c");
if (str) {
if (!info->pass) {
VIR_TEST_VERBOSE("lookup for 'c' in '%s' should have failed",
info->doc);
return -1;
} else if (STRNEQ(str, "str")) {
VIR_TEST_VERBOSE("lookup for 'c' in '%s' found '%s' but "
"should have found 'str'", info->doc, str);
return -1;
}
} else if (info->pass) {
VIR_TEST_VERBOSE("lookup for 'c' in '%s' should have succeeded",
info->doc);
return -1;
}
value = virJSONValueObjectGetArray(json, "d");
if (value) {
if (!info->pass) {
VIR_TEST_VERBOSE("lookup for 'd' in '%s' should have failed",
info->doc);
return -1;
} else {
result = virJSONValueToString(value, false);
if (STRNEQ_NULLABLE(result, "[]")) {
VIR_TEST_VERBOSE("lookup for 'd' in '%s' found '%s' but "
"should have found '[]'",
info->doc, NULLSTR(result));
return -1;
}
VIR_FREE(result);
}
} else if (info->pass) {
VIR_TEST_VERBOSE("lookup for 'd' in '%s' should have succeeded",
info->doc);
return -1;
}
return 0;
}
static int
testJSONCopy(const void *data)
{
const struct testInfo *info = data;
g_autoptr(virJSONValue) json = NULL;
g_autoptr(virJSONValue) jsonCopy = NULL;
g_autofree char *result = NULL;
g_autofree char *resultCopy = NULL;
json = virJSONValueFromString(info->doc);
if (!json) {
VIR_TEST_VERBOSE("Failed to parse %s", info->doc);
return -1;
}
jsonCopy = virJSONValueCopy(json);
if (!jsonCopy) {
VIR_TEST_VERBOSE("Failed to copy JSON data");
return -1;
}
result = virJSONValueToString(json, false);
if (!result) {
VIR_TEST_VERBOSE("Failed to format original JSON data");
return -1;
}
resultCopy = virJSONValueToString(json, false);
if (!resultCopy) {
VIR_TEST_VERBOSE("Failed to format copied JSON data");
return -1;
}
if (STRNEQ(result, resultCopy)) {
if (virTestGetVerbose())
virTestDifference(stderr, result, resultCopy);
return -1;
}
VIR_FREE(result);
VIR_FREE(resultCopy);
result = virJSONValueToString(json, true);
if (!result) {
VIR_TEST_VERBOSE("Failed to format original JSON data");
return -1;
}
resultCopy = virJSONValueToString(json, true);
if (!resultCopy) {
VIR_TEST_VERBOSE("Failed to format copied JSON data");
return -1;
}
if (STRNEQ(result, resultCopy)) {
if (virTestGetVerbose())
virTestDifference(stderr, result, resultCopy);
return -1;
}
return 0;
}
static int
testJSONDeflatten(const void *data)
{
const struct testInfo *info = data;
g_autoptr(virJSONValue) injson = NULL;
g_autoptr(virJSONValue) deflattened = NULL;
g_autofree char *infile = NULL;
g_autofree char *indata = NULL;
g_autofree char *outfile = NULL;
g_autofree char *actual = NULL;
infile = g_strdup_printf("%s/virjsondata/deflatten-%s-in.json",
abs_srcdir, info->name);
outfile = g_strdup_printf("%s/virjsondata/deflatten-%s-out.json",
abs_srcdir, info->name);
if (virTestLoadFile(infile, &indata) < 0)
return -1;
if (!(injson = virJSONValueFromString(indata)))
return -1;
if ((deflattened = virJSONValueObjectDeflatten(injson))) {
if (!info->pass) {
VIR_TEST_VERBOSE("%s: deflattening should have failed", info->name);
return -1;
}
} else {
if (!info->pass)
return 0;
return -1;
}
if (!(actual = virJSONValueToString(deflattened, true)))
return -1;
if (virTestCompareToFile(actual, outfile) < 0)
return -1;
return 0;
}
static int
testJSONEscapeObj(const void *data G_GNUC_UNUSED)
{
g_autoptr(virJSONValue) json = NULL;
g_autoptr(virJSONValue) nestjson = NULL;
g_autoptr(virJSONValue) parsejson = NULL;
g_autofree char *neststr = NULL;
g_autofree char *result = NULL;
const char *parsednestedstr;
if (virJSONValueObjectAdd(&nestjson,
"s:stringkey", "stringvalue",
"i:numberkey", 1234,
"b:booleankey", false, NULL) < 0) {
VIR_TEST_VERBOSE("failed to create nested json object");
return -1;
}
if (!(neststr = virJSONValueToString(nestjson, false))) {
VIR_TEST_VERBOSE("failed to format nested json object");
return -1;
}
if (virJSONValueObjectAdd(&json, "s:test", neststr, NULL) < 0) {
VIR_TEST_VERBOSE("Failed to create json object");
return -1;
}
if (!(result = virJSONValueToString(json, false))) {
VIR_TEST_VERBOSE("Failed to format json object");
return -1;
}
if (!(parsejson = virJSONValueFromString(result))) {
VIR_TEST_VERBOSE("Failed to parse JSON with nested JSON in string");
return -1;
}
if (!(parsednestedstr = virJSONValueObjectGetString(parsejson, "test"))) {
VIR_TEST_VERBOSE("Failed to retrieve string containing nested json");
return -1;
}
if (STRNEQ(parsednestedstr, neststr)) {
virTestDifference(stderr, neststr, parsednestedstr);
return -1;
}
return 0;
}
static int
testJSONObjectFormatSteal(const void *opaque G_GNUC_UNUSED)
{
g_autoptr(virJSONValue) a1 = NULL;
g_autoptr(virJSONValue) a2 = NULL;
g_autoptr(virJSONValue) t1 = NULL;
g_autoptr(virJSONValue) t2 = NULL;
if (!(a1 = virJSONValueNewString(g_strdup("test"))) ||
!(a2 = virJSONValueNewString(g_strdup("test")))) {
VIR_TEST_VERBOSE("Failed to create json object");
}
if (virJSONValueObjectAdd(&t1, "a:t", &a1, "s:f", NULL, NULL) != -1) {
VIR_TEST_VERBOSE("virJSONValueObjectAdd(t1) should have failed");
return -1;
}
if (a1) {
VIR_TEST_VERBOSE("appended object a1 was not consumed");
return -1;
}
if (virJSONValueObjectAdd(&t2, "s:f", NULL, "a:t", &a1, NULL) != -1) {
VIR_TEST_VERBOSE("virJSONValueObjectAdd(t2) should have failed");
return -1;
}
if (!a2) {
VIR_TEST_VERBOSE("appended object a2 was consumed");
return -1;
}
return 0;
}
static int
mymain(void)
{
int ret = 0;
#define DO_TEST_FULL(name, cmd, doc, expect, pass) \
do { \
struct testInfo info = { name, doc, expect, pass }; \
if (virTestRun(name, testJSON ## cmd, &info) < 0) \
ret = -1; \
} while (0)
/**
* DO_TEST_PARSE:
* @name: test name
* @doc: source JSON string
* @expect: expected output JSON formatted from parsed @doc
*
* Parses @doc and formats it back. If @expect is NULL the result has to be
* identical to @doc.
*/
#define DO_TEST_PARSE(name, doc, expect) \
DO_TEST_FULL(name, FromString, doc, expect, true)
#define DO_TEST_PARSE_FAIL(name, doc) \
DO_TEST_FULL(name, FromString, doc, NULL, false)
#define DO_TEST_PARSE_FILE(name) \
DO_TEST_FULL(name, FromFile, NULL, NULL, true)
DO_TEST_PARSE_FILE("Simple");
DO_TEST_PARSE_FILE("NotSoSimple");
DO_TEST_PARSE_FILE("Harder");
DO_TEST_PARSE_FILE("VeryHard");
DO_TEST_FULL("success", AddRemove, NULL, NULL, true);
DO_TEST_FULL("failure", AddRemove, NULL, NULL, false);
DO_TEST_FULL("copy and free", Copy,
"{\"return\": [{\"name\": \"quit\"}, {\"name\": \"eject\"},"
"{\"name\": \"change\"}, {\"name\": \"screendump\"},"
"{\"name\": \"stop\"}, {\"name\": \"cont\"}, {\"name\": "
"\"system_reset\"}, {\"name\": \"system_powerdown\"}, "
"{\"name\": \"device_add\"}, {\"name\": \"device_del\"}, "
"{\"name\": \"cpu\"}, {\"name\": \"memsave\"}, {\"name\": "
"\"pmemsave\"}, {\"name\": \"migrate\"}, {\"name\": "
"\"migrate_cancel\"}, {\"name\": \"migrate_set_speed\"},"
"{\"name\": \"client_migrate_info\"}, {\"name\": "
"\"migrate_set_downtime\"}, {\"name\": \"netdev_add\"}, "
"{\"name\": \"netdev_del\"}, {\"name\": \"block_resize\"},"
"{\"name\": \"balloon\"}, {\"name\": \"set_link\"}, {\"name\":"
"\"getfd\"}, {\"name\": \"closefd\"}, {\"name\": \"block_passwd\"},"
"{\"name\": \"set_password\"}, {\"name\": \"expire_password\"},"
"{\"name\": \"qmp_capabilities\"}, {\"name\": "
"\"human-monitor-command\"}, {\"name\": \"query-version\"},"
"{\"name\": \"query-commands\"}, {\"name\": \"query-chardev\"},"
"{\"name\": \"query-block\"}, {\"name\": \"query-blockstats\"}, "
"{\"name\": \"query-cpus\"}, {\"name\": \"query-pci\"}, {\"name\":"
"\"query-kvm\"}, {\"name\": \"query-status\"}, {\"name\": "
"\"query-mice\"}, {\"name\": \"query-vnc\"}, {\"name\": "
"\"query-spice\"}, {\"name\": \"query-name\"}, {\"name\": "
"\"query-uuid\"}, {\"name\": \"query-migrate\"}, {\"name\": "
"\"query-balloon\"}], \"id\": \"libvirt-2\"}", NULL, true);
DO_TEST_PARSE("almost nothing", "[]", NULL);
DO_TEST_PARSE_FAIL("nothing", "");
DO_TEST_PARSE("number without garbage", "[ 234545 ]", "[234545]");
DO_TEST_PARSE_FAIL("number with garbage", "[ 2345b45 ]");
DO_TEST_PARSE("float without garbage", "[ 1.024e19 ]", "[1.024e19]");
DO_TEST_PARSE_FAIL("float with garbage", "[ 0.0314159ee+100 ]");
DO_TEST_PARSE("unsigned minus one", "[ 18446744073709551615 ]", "[18446744073709551615]");
DO_TEST_PARSE("another big number", "[ 9223372036854775808 ]", "[9223372036854775808]");
DO_TEST_PARSE("string", "[ \"The meaning of life\" ]",
"[\"The meaning of life\"]");
DO_TEST_PARSE_FAIL("unterminated string", "[ \"The meaning of lif ]");
DO_TEST_PARSE("integer", "1", NULL);
DO_TEST_PARSE("boolean", "true", NULL);
DO_TEST_PARSE("null", "null", NULL);
DO_TEST_PARSE("escaping symbols", "[\"\\\"\\t\\n\\\\\"]", NULL);
DO_TEST_PARSE("escaped strings", "[\"{\\\"blurb\\\":\\\"test\\\"}\"]", NULL);
DO_TEST_PARSE_FAIL("incomplete keyword", "tr");
DO_TEST_PARSE_FAIL("overdone keyword", "[ truest ]");
DO_TEST_PARSE_FAIL("unknown keyword", "huh");
DO_TEST_PARSE_FAIL("comments", "[ /* nope */\n1 // not this either\n]");
DO_TEST_PARSE_FAIL("trailing garbage", "[] []");
DO_TEST_PARSE_FAIL("list without array", "1, 1");
DO_TEST_PARSE_FAIL("parser abuse", "1] [2");
DO_TEST_PARSE_FAIL("invalid UTF-8", "\"\x80\"");
DO_TEST_PARSE_FAIL("object with numeric keys", "{ 1:1, 2:1, 3:2 }");
DO_TEST_PARSE_FAIL("unterminated object", "{ \"1\":1, \"2\":1, \"3\":2");
DO_TEST_PARSE_FAIL("unterminated array of objects",
"[ {\"name\": \"John\"}, {\"name\": \"Paul\"}, ");
DO_TEST_PARSE_FAIL("array of an object with an array as a key",
"[ {[\"key1\", \"key2\"]: \"value\"} ]");
DO_TEST_PARSE_FAIL("object with unterminated key", "{ \"key:7 }");
DO_TEST_PARSE_FAIL("duplicate key", "{ \"a\": 1, \"a\": 1 }");
DO_TEST_FULL("lookup on array", Lookup,
"[ 1 ]", NULL, false);
DO_TEST_FULL("lookup on string", Lookup,
"\"str\"", NULL, false);
DO_TEST_FULL("lookup on integer", Lookup,
"1", NULL, false);
DO_TEST_FULL("lookup with missing key", Lookup,
"{ }", NULL, false);
DO_TEST_FULL("lookup with wrong type", Lookup,
"{ \"a\": 1, \"b\": \"str\", \"c\": [], \"d\": {} }",
NULL, false);
DO_TEST_FULL("lookup with correct type", Lookup,
"{ \"a\": {}, \"b\": 1, \"c\": \"str\", \"d\": [] }",
NULL, true);
DO_TEST_FULL("create object with nested json in attribute", EscapeObj,
NULL, NULL, true);
DO_TEST_FULL("stealing of attributes while creating objects",
ObjectFormatSteal, NULL, NULL, true);
#define DO_TEST_DEFLATTEN(name, pass) \
DO_TEST_FULL(name, Deflatten, NULL, NULL, pass)
DO_TEST_DEFLATTEN("unflattened", true);
DO_TEST_DEFLATTEN("basic-file", true);
DO_TEST_DEFLATTEN("basic-generic", true);
DO_TEST_DEFLATTEN("deep-file", true);
DO_TEST_DEFLATTEN("deep-generic", true);
DO_TEST_DEFLATTEN("nested", true);
DO_TEST_DEFLATTEN("double-key", false);
DO_TEST_DEFLATTEN("concat", true);
DO_TEST_DEFLATTEN("concat-double-key", false);
DO_TEST_DEFLATTEN("qemu-sheepdog", true);
DO_TEST_DEFLATTEN("dotted-array", true);
return (ret == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN(mymain)
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