Adding upstream version 252.22.upstream/252.22

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 667 insertions, 0 deletions

diff --git a/src/test/test-json.c b/src/test/test-json.c
new file mode 100644
index 0000000..563741d
--- /dev/null
+++ b/src/test/test-json.c
@@ -0,0 +1,667 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <float.h>
+
+#include "alloc-util.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "json-internal.h"
+#include "json.h"
+#include "math-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tests.h"
+#include "util.h"
+
+static void test_tokenizer_one(const char *data, ...) {
+        unsigned line = 0, column = 0;
+        void *state = NULL;
+        va_list ap;
+
+        _cleanup_free_ char *cdata = NULL;
+        assert_se(cdata = cescape(data));
+        log_info("/* %s data=\"%s\" */", __func__, cdata);
+
+        va_start(ap, data);
+
+        for (;;) {
+                unsigned token_line, token_column;
+                _cleanup_free_ char *str = NULL;
+                JsonValue v = JSON_VALUE_NULL;
+                int t, tt;
+
+                t = json_tokenize(&data, &str, &v, &token_line, &token_column, &state, &line, &column);
+                tt = va_arg(ap, int);
+
+                assert_se(t == tt);
+
+                if (t == JSON_TOKEN_END || t < 0)
+                        break;
+
+                else if (t == JSON_TOKEN_STRING) {
+                        const char *nn;
+
+                        nn = va_arg(ap, const char *);
+                        assert_se(streq_ptr(nn, str));
+
+                } else if (t == JSON_TOKEN_REAL) {
+                        double d;
+
+                        d = va_arg(ap, double);
+
+                        assert_se(fabs(d - v.real) < 1e-10 ||
+                                  fabs((d - v.real) / v.real) < 1e-10);
+
+                } else if (t == JSON_TOKEN_INTEGER) {
+                        int64_t i;
+
+                        i = va_arg(ap, int64_t);
+                        assert_se(i == v.integer);
+
+                } else if (t == JSON_TOKEN_UNSIGNED) {
+                        uint64_t u;
+
+                        u = va_arg(ap, uint64_t);
+                        assert_se(u == v.unsig);
+
+                } else if (t == JSON_TOKEN_BOOLEAN) {
+                        bool b;
+
+                        b = va_arg(ap, int);
+                        assert_se(b == v.boolean);
+                }
+        }
+
+        va_end(ap);
+}
+
+typedef void (*Test)(JsonVariant *);
+
+static void test_variant_one(const char *data, Test test) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL;
+        _cleanup_free_ char *s = NULL;
+        int r;
+
+        _cleanup_free_ char *cdata;
+        assert_se(cdata = cescape(data));
+        log_info("/* %s data=\"%s\" */", __func__, cdata);
+
+        r = json_parse(data, 0, &v, NULL, NULL);
+        assert_se(r == 0);
+        assert_se(v);
+
+        r = json_variant_format(v, 0, &s);
+        assert_se(r >= 0);
+        assert_se(s);
+        assert_se((size_t) r == strlen(s));
+
+        log_info("formatted normally: %s\n", s);
+
+        r = json_parse(data, JSON_PARSE_SENSITIVE, &w, NULL, NULL);
+        assert_se(r == 0);
+        assert_se(w);
+        assert_se(json_variant_has_type(v, json_variant_type(w)));
+        assert_se(json_variant_has_type(w, json_variant_type(v)));
+        assert_se(json_variant_equal(v, w));
+
+        s = mfree(s);
+        w = json_variant_unref(w);
+
+        r = json_variant_format(v, JSON_FORMAT_PRETTY, &s);
+        assert_se(r >= 0);
+        assert_se(s);
+        assert_se((size_t) r == strlen(s));
+
+        log_info("formatted prettily:\n%s", s);
+
+        r = json_parse(data, 0, &w, NULL, NULL);
+        assert_se(r == 0);
+        assert_se(w);
+
+        assert_se(json_variant_has_type(v, json_variant_type(w)));
+        assert_se(json_variant_has_type(w, json_variant_type(v)));
+        assert_se(json_variant_equal(v, w));
+
+        s = mfree(s);
+        r = json_variant_format(v, JSON_FORMAT_COLOR, &s);
+        assert_se(r >= 0);
+        assert_se(s);
+        assert_se((size_t) r == strlen(s));
+        printf("Normal with color: %s\n", s);
+
+        s = mfree(s);
+        r = json_variant_format(v, JSON_FORMAT_COLOR|JSON_FORMAT_PRETTY, &s);
+        assert_se(r >= 0);
+        assert_se(s);
+        assert_se((size_t) r == strlen(s));
+        printf("Pretty with color:\n%s\n", s);
+
+        if (test)
+                test(v);
+}
+
+static void test_1(JsonVariant *v) {
+        JsonVariant *p, *q;
+        unsigned i;
+
+        log_info("/* %s */", __func__);
+
+        /* 3 keys + 3 values */
+        assert_se(json_variant_elements(v) == 6);
+
+        /* has k */
+        p = json_variant_by_key(v, "k");
+        assert_se(p && json_variant_type(p) == JSON_VARIANT_STRING);
+
+        /* k equals v */
+        assert_se(streq(json_variant_string(p), "v"));
+
+        /* has foo */
+        p = json_variant_by_key(v, "foo");
+        assert_se(p && json_variant_type(p) == JSON_VARIANT_ARRAY && json_variant_elements(p) == 3);
+
+        /* check  foo[0] = 1, foo[1] = 2, foo[2] = 3 */
+        for (i = 0; i < 3; ++i) {
+                q = json_variant_by_index(p, i);
+                assert_se(q && json_variant_type(q) == JSON_VARIANT_UNSIGNED && json_variant_unsigned(q) == (i+1));
+                assert_se(q && json_variant_has_type(q, JSON_VARIANT_INTEGER) && json_variant_integer(q) == (i+1));
+        }
+
+        /* has bar */
+        p = json_variant_by_key(v, "bar");
+        assert_se(p && json_variant_type(p) == JSON_VARIANT_OBJECT && json_variant_elements(p) == 2);
+
+        /* zap is null */
+        q = json_variant_by_key(p, "zap");
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_NULL);
+}
+
+static void test_2(JsonVariant *v) {
+        JsonVariant *p, *q;
+
+        log_info("/* %s */", __func__);
+
+        /* 2 keys + 2 values */
+        assert_se(json_variant_elements(v) == 4);
+
+        /* has mutant */
+        p = json_variant_by_key(v, "mutant");
+        assert_se(p && json_variant_type(p) == JSON_VARIANT_ARRAY && json_variant_elements(p) == 4);
+
+        /* mutant[0] == 1 */
+        q = json_variant_by_index(p, 0);
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_UNSIGNED && json_variant_unsigned(q) == 1);
+        assert_se(q && json_variant_has_type(q, JSON_VARIANT_INTEGER) && json_variant_integer(q) == 1);
+
+        /* mutant[1] == null */
+        q = json_variant_by_index(p, 1);
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_NULL);
+
+        /* mutant[2] == "1" */
+        q = json_variant_by_index(p, 2);
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_STRING && streq(json_variant_string(q), "1"));
+
+        /* mutant[3] == JSON_VARIANT_OBJECT */
+        q = json_variant_by_index(p, 3);
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_OBJECT && json_variant_elements(q) == 2);
+
+        /* has 1 */
+        p = json_variant_by_key(q, "1");
+        assert_se(p && json_variant_type(p) == JSON_VARIANT_ARRAY && json_variant_elements(p) == 2);
+
+        /* "1"[0] == 1 */
+        q = json_variant_by_index(p, 0);
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_UNSIGNED && json_variant_unsigned(q) == 1);
+        assert_se(q && json_variant_has_type(q, JSON_VARIANT_INTEGER) && json_variant_integer(q) == 1);
+
+        /* "1"[1] == "1" */
+        q = json_variant_by_index(p, 1);
+        assert_se(q && json_variant_type(q) == JSON_VARIANT_STRING && streq(json_variant_string(q), "1"));
+
+        /* has thisisaverylongproperty */
+        p = json_variant_by_key(v, "thisisaverylongproperty");
+        assert_se(p && json_variant_type(p) == JSON_VARIANT_REAL && fabs(json_variant_real(p) - 1.27) < 0.001);
+}
+
+static void test_zeroes(JsonVariant *v) {
+        /* Make sure zero is how we expect it. */
+        log_info("/* %s */", __func__);
+
+        assert_se(json_variant_elements(v) == 13);
+
+        for (size_t i = 0; i < json_variant_elements(v); i++) {
+                JsonVariant *w;
+                size_t j;
+
+                assert_se(w = json_variant_by_index(v, i));
+
+                assert_se(json_variant_integer(w) == 0);
+                assert_se(json_variant_unsigned(w) == 0U);
+
+                assert_se(iszero_safe(json_variant_real(w)));
+
+                assert_se(json_variant_is_integer(w));
+                assert_se(json_variant_is_unsigned(w));
+                assert_se(json_variant_is_real(w));
+                assert_se(json_variant_is_number(w));
+
+                assert_se(!json_variant_is_negative(w));
+
+                assert_se(IN_SET(json_variant_type(w), JSON_VARIANT_INTEGER, JSON_VARIANT_UNSIGNED, JSON_VARIANT_REAL));
+
+                for (j = 0; j < json_variant_elements(v); j++) {
+                        JsonVariant *q;
+
+                        assert_se(q = json_variant_by_index(v, j));
+
+                        assert_se(json_variant_equal(w, q));
+                }
+        }
+}
+
+TEST(build) {
+        _cleanup_(json_variant_unrefp) JsonVariant *a = NULL, *b = NULL;
+        _cleanup_free_ char *s = NULL, *t = NULL;
+
+        assert_se(json_build(&a, JSON_BUILD_STRING("hallo")) >= 0);
+        assert_se(json_build(&b, JSON_BUILD_LITERAL(" \"hallo\"   ")) >= 0);
+        assert_se(json_variant_equal(a, b));
+
+        b = json_variant_unref(b);
+
+        assert_se(json_build(&b, JSON_BUILD_VARIANT(a)) >= 0);
+        assert_se(json_variant_equal(a, b));
+
+        b = json_variant_unref(b);
+        assert_se(json_build(&b, JSON_BUILD_STRING("pief")) >= 0);
+        assert_se(!json_variant_equal(a, b));
+
+        a = json_variant_unref(a);
+        b = json_variant_unref(b);
+
+        assert_se(json_build(&a, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("one", JSON_BUILD_INTEGER(7)),
+                                                   JSON_BUILD_PAIR("two", JSON_BUILD_REAL(2.0)),
+                                                   JSON_BUILD_PAIR("three", JSON_BUILD_INTEGER(0)))) >= 0);
+
+        assert_se(json_build(&b, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("two", JSON_BUILD_INTEGER(2)),
+                                                   JSON_BUILD_PAIR("three", JSON_BUILD_REAL(0)),
+                                                   JSON_BUILD_PAIR("one", JSON_BUILD_REAL(7)))) >= 0);
+
+        assert_se(json_variant_equal(a, b));
+
+        a = json_variant_unref(a);
+        b = json_variant_unref(b);
+
+        const char* arr_1234[] = {"one", "two", "three", "four", NULL};
+        assert_se(json_build(&a, JSON_BUILD_ARRAY(JSON_BUILD_OBJECT(JSON_BUILD_PAIR("x", JSON_BUILD_BOOLEAN(true)),
+                                                                    JSON_BUILD_PAIR("y", JSON_BUILD_OBJECT(JSON_BUILD_PAIR("this", JSON_BUILD_NULL)))),
+                                                  JSON_BUILD_VARIANT(NULL),
+                                                  JSON_BUILD_LITERAL(NULL),
+                                                  JSON_BUILD_STRING(NULL),
+                                                  JSON_BUILD_NULL,
+                                                  JSON_BUILD_INTEGER(77),
+                                                  JSON_BUILD_ARRAY(JSON_BUILD_VARIANT(JSON_VARIANT_STRING_CONST("foobar")),
+                                                                   JSON_BUILD_VARIANT(JSON_VARIANT_STRING_CONST("zzz"))),
+                                                  JSON_BUILD_STRV((char**) arr_1234))) >= 0);
+
+        assert_se(json_variant_format(a, 0, &s) >= 0);
+        log_info("GOT: %s\n", s);
+        assert_se(json_parse(s, 0, &b, NULL, NULL) >= 0);
+        assert_se(json_variant_equal(a, b));
+
+        a = json_variant_unref(a);
+        b = json_variant_unref(b);
+
+        assert_se(json_build(&a, JSON_BUILD_REAL(M_PI)) >= 0);
+
+        s = mfree(s);
+        assert_se(json_variant_format(a, 0, &s) >= 0);
+        log_info("GOT: %s\n", s);
+        assert_se(json_parse(s, 0, &b, NULL, NULL) >= 0);
+        assert_se(json_variant_format(b, 0, &t) >= 0);
+        log_info("GOT: %s\n", t);
+
+        assert_se(streq(s, t));
+
+        a = json_variant_unref(a);
+        b = json_variant_unref(b);
+
+        assert_se(json_build(&a, JSON_BUILD_OBJECT(
+                                             JSON_BUILD_PAIR("x", JSON_BUILD_STRING("y")),
+                                             JSON_BUILD_PAIR("z", JSON_BUILD_CONST_STRING("a")),
+                                             JSON_BUILD_PAIR("b", JSON_BUILD_CONST_STRING("c"))
+                             )) >= 0);
+
+        assert_se(json_build(&b, JSON_BUILD_OBJECT(
+                                             JSON_BUILD_PAIR("x", JSON_BUILD_STRING("y")),
+                                             JSON_BUILD_PAIR_CONDITION(false, "p", JSON_BUILD_STRING("q")),
+                                             JSON_BUILD_PAIR_CONDITION(true, "z", JSON_BUILD_CONST_STRING("a")),
+                                             JSON_BUILD_PAIR_CONDITION(false, "j", JSON_BUILD_ARRAY(JSON_BUILD_STRING("k"), JSON_BUILD_CONST_STRING("u"), JSON_BUILD_CONST_STRING("i"))),
+                                             JSON_BUILD_PAIR("b", JSON_BUILD_CONST_STRING("c"))
+                             )) >= 0);
+
+        assert_se(json_variant_equal(a, b));
+}
+
+TEST(json_parse_file_empty) {
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+        assert_se(fopen_unlocked("/dev/null", "re", &f) >= 0);
+        assert_se(json_parse_file(f, "waldo", 0, &v, NULL, NULL) == -ENODATA);
+        assert_se(v == NULL);
+}
+
+TEST(json_parse_file_invalid) {
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+        assert_se(f = fmemopen_unlocked((void*) "kookoo", 6, "r"));
+        assert_se(json_parse_file(f, "waldo", 0, &v, NULL, NULL) == -EINVAL);
+        assert_se(v == NULL);
+}
+
+TEST(source) {
+        static const char data[] =
+                "\n"
+                "\n"
+                "{\n"
+                "\"foo\" : \"bar\", \n"
+                "\"qüüx\" : [ 1, 2, 3,\n"
+                "4,\n"
+                "5 ],\n"
+                "\"miep\" : { \"hallo\" : 1 },\n"
+                "\n"
+                "\"zzzzzz\" \n"
+                ":\n"
+                "[ true, \n"
+                "false, 7.5, {} ]\n"
+                "}\n";
+
+        _cleanup_fclose_ FILE *f = NULL;
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+        printf("--- original begin ---\n"
+               "%s"
+               "--- original end ---\n", data);
+
+        assert_se(f = fmemopen_unlocked((void*) data, strlen(data), "r"));
+
+        assert_se(json_parse_file(f, "waldo", 0, &v, NULL, NULL) >= 0);
+
+        printf("--- non-pretty begin ---\n");
+        json_variant_dump(v, 0, stdout, NULL);
+        printf("\n--- non-pretty end ---\n");
+
+        printf("--- pretty begin ---\n");
+        json_variant_dump(v, JSON_FORMAT_PRETTY|JSON_FORMAT_COLOR|JSON_FORMAT_SOURCE, stdout, NULL);
+        printf("--- pretty end ---\n");
+}
+
+TEST(depth) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+        int r;
+
+        v = JSON_VARIANT_STRING_CONST("start");
+
+        /* Let's verify that the maximum depth checks work */
+
+        for (unsigned i = 0;; i++) {
+                _cleanup_(json_variant_unrefp) JsonVariant *w = NULL;
+
+                assert_se(i <= UINT16_MAX);
+                if (i & 1)
+                        r = json_variant_new_array(&w, &v, 1);
+                else
+                        r = json_variant_new_object(&w, (JsonVariant*[]) { JSON_VARIANT_STRING_CONST("key"), v }, 2);
+                if (r == -ELNRNG) {
+                        log_info("max depth at %u", i);
+                        break;
+                }
+#if HAS_FEATURE_MEMORY_SANITIZER
+                /* msan doesn't like the stack nesting to be too deep. Let's quit early. */
+                if (i >= 128) {
+                        log_info("quitting early at depth %u", i);
+                        break;
+                }
+#endif
+
+                assert_se(r >= 0);
+
+                json_variant_unref(v);
+                v = TAKE_PTR(w);
+        }
+
+        json_variant_dump(v, 0, stdout, NULL);
+        fputs("\n", stdout);
+}
+
+TEST(normalize) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL;
+        _cleanup_free_ char *t = NULL;
+
+        assert_se(json_build(&v, JSON_BUILD_OBJECT(
+                                             JSON_BUILD_PAIR("b", JSON_BUILD_STRING("x")),
+                                             JSON_BUILD_PAIR("c", JSON_BUILD_CONST_STRING("y")),
+                                             JSON_BUILD_PAIR("a", JSON_BUILD_CONST_STRING("z")))) >= 0);
+
+        assert_se(!json_variant_is_sorted(v));
+        assert_se(!json_variant_is_normalized(v));
+
+        assert_se(json_variant_format(v, 0, &t) >= 0);
+        assert_se(streq(t, "{\"b\":\"x\",\"c\":\"y\",\"a\":\"z\"}"));
+        t = mfree(t);
+
+        assert_se(json_build(&w, JSON_BUILD_OBJECT(
+                                             JSON_BUILD_PAIR("bar", JSON_BUILD_STRING("zzz")),
+                                             JSON_BUILD_PAIR("foo", JSON_BUILD_VARIANT(v)))) >= 0);
+
+        assert_se(json_variant_is_sorted(w));
+        assert_se(!json_variant_is_normalized(w));
+
+        assert_se(json_variant_format(w, 0, &t) >= 0);
+        assert_se(streq(t, "{\"bar\":\"zzz\",\"foo\":{\"b\":\"x\",\"c\":\"y\",\"a\":\"z\"}}"));
+        t = mfree(t);
+
+        assert_se(json_variant_sort(&v) >= 0);
+        assert_se(json_variant_is_sorted(v));
+        assert_se(json_variant_is_normalized(v));
+
+        assert_se(json_variant_format(v, 0, &t) >= 0);
+        assert_se(streq(t, "{\"a\":\"z\",\"b\":\"x\",\"c\":\"y\"}"));
+        t = mfree(t);
+
+        assert_se(json_variant_normalize(&w) >= 0);
+        assert_se(json_variant_is_sorted(w));
+        assert_se(json_variant_is_normalized(w));
+
+        assert_se(json_variant_format(w, 0, &t) >= 0);
+        assert_se(streq(t, "{\"bar\":\"zzz\",\"foo\":{\"a\":\"z\",\"b\":\"x\",\"c\":\"y\"}}"));
+        t = mfree(t);
+}
+
+TEST(bisect) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+        /* Tests the bisection logic in json_variant_by_key() */
+
+        for (char c = 'z'; c >= 'a'; c--) {
+
+                if ((c % 3) == 0)
+                        continue;
+
+                _cleanup_(json_variant_unrefp) JsonVariant *w = NULL;
+                assert_se(json_variant_new_stringn(&w, (char[4]) { '<', c, c, '>' }, 4) >= 0);
+                assert_se(json_variant_set_field(&v, (char[2]) { c, 0 }, w) >= 0);
+        }
+
+        json_variant_dump(v, JSON_FORMAT_COLOR|JSON_FORMAT_PRETTY, NULL, NULL);
+
+        assert_se(!json_variant_is_sorted(v));
+        assert_se(!json_variant_is_normalized(v));
+        assert_se(json_variant_normalize(&v) >= 0);
+        assert_se(json_variant_is_sorted(v));
+        assert_se(json_variant_is_normalized(v));
+
+        json_variant_dump(v, JSON_FORMAT_COLOR|JSON_FORMAT_PRETTY, NULL, NULL);
+
+        for (char c = 'a'; c <= 'z'; c++) {
+                JsonVariant *k;
+                const char *z;
+
+                k = json_variant_by_key(v, (char[2]) { c, 0 });
+                assert_se(!k == ((c % 3) == 0));
+
+                if (!k)
+                        continue;
+
+                assert_se(json_variant_is_string(k));
+
+                z = (char[5]){ '<', c, c, '>', 0};
+                assert_se(streq(json_variant_string(k), z));
+        }
+}
+
+static void test_float_match(JsonVariant *v) {
+        const double delta = 0.0001;
+
+        assert_se(json_variant_is_array(v));
+        assert_se(json_variant_elements(v) == 11);
+        assert_se(fabs(1.0 - (DBL_MIN / json_variant_real(json_variant_by_index(v, 0)))) <= delta);
+        assert_se(fabs(1.0 - (DBL_MAX / json_variant_real(json_variant_by_index(v, 1)))) <= delta);
+        assert_se(json_variant_is_null(json_variant_by_index(v, 2))); /* nan is not supported by json → null */
+        assert_se(json_variant_is_null(json_variant_by_index(v, 3))); /* +inf is not supported by json → null */
+        assert_se(json_variant_is_null(json_variant_by_index(v, 4))); /* -inf is not supported by json → null */
+        assert_se(json_variant_is_null(json_variant_by_index(v, 5)) ||
+                  fabs(1.0 - (HUGE_VAL / json_variant_real(json_variant_by_index(v, 5)))) <= delta); /* HUGE_VAL might be +inf, but might also be something else */
+        assert_se(json_variant_is_real(json_variant_by_index(v, 6)) &&
+                  json_variant_is_integer(json_variant_by_index(v, 6)) &&
+                  json_variant_integer(json_variant_by_index(v, 6)) == 0);
+        assert_se(json_variant_is_real(json_variant_by_index(v, 7)) &&
+                  json_variant_is_integer(json_variant_by_index(v, 7)) &&
+                  json_variant_integer(json_variant_by_index(v, 7)) == 10);
+        assert_se(json_variant_is_real(json_variant_by_index(v, 8)) &&
+                  json_variant_is_integer(json_variant_by_index(v, 8)) &&
+                  json_variant_integer(json_variant_by_index(v, 8)) == -10);
+        assert_se(json_variant_is_real(json_variant_by_index(v, 9)) &&
+                  !json_variant_is_integer(json_variant_by_index(v, 9)));
+        assert_se(fabs(1.0 - (DBL_MIN / 2 / json_variant_real(json_variant_by_index(v, 9)))) <= delta);
+        assert_se(json_variant_is_real(json_variant_by_index(v, 10)) &&
+                  !json_variant_is_integer(json_variant_by_index(v, 10)));
+        assert_se(fabs(1.0 - (-DBL_MIN / 2 / json_variant_real(json_variant_by_index(v, 10)))) <= delta);
+}
+
+TEST(float) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL;
+        _cleanup_free_ char *text = NULL;
+
+        assert_se(json_build(&v, JSON_BUILD_ARRAY(
+                                             JSON_BUILD_REAL(DBL_MIN),
+                                             JSON_BUILD_REAL(DBL_MAX),
+                                             JSON_BUILD_REAL(NAN),
+                                             JSON_BUILD_REAL(INFINITY),
+                                             JSON_BUILD_REAL(-INFINITY),
+                                             JSON_BUILD_REAL(HUGE_VAL),
+                                             JSON_BUILD_REAL(0),
+                                             JSON_BUILD_REAL(10),
+                                             JSON_BUILD_REAL(-10),
+                                             JSON_BUILD_REAL(DBL_MIN / 2),
+                                             JSON_BUILD_REAL(-DBL_MIN / 2))) >= 0);
+
+        json_variant_dump(v, JSON_FORMAT_COLOR|JSON_FORMAT_PRETTY, NULL, NULL);
+
+        test_float_match(v);
+
+        assert_se(json_variant_format(v, 0, &text) >= 0);
+        assert_se(json_parse(text, 0, &w, NULL, NULL) >= 0);
+
+        json_variant_dump(w, JSON_FORMAT_COLOR|JSON_FORMAT_PRETTY, NULL, NULL);
+
+        test_float_match(w);
+}
+
+static void test_equal_text(JsonVariant *v, const char *text) {
+        _cleanup_(json_variant_unrefp) JsonVariant *w = NULL;
+
+        assert_se(json_parse(text, 0, &w, NULL, NULL) >= 0);
+        assert_se(json_variant_equal(v, w) || (!v && json_variant_is_null(w)));
+}
+
+TEST(set_field) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+        test_equal_text(v, "null");
+        assert_se(json_variant_set_field(&v, "foo", NULL) >= 0);
+        test_equal_text(v, "{\"foo\" : null}");
+        assert_se(json_variant_set_field(&v, "bar", JSON_VARIANT_STRING_CONST("quux")) >= 0);
+        test_equal_text(v, "{\"foo\" : null, \"bar\" : \"quux\"}");
+        assert_se(json_variant_set_field(&v, "foo", JSON_VARIANT_STRING_CONST("quux2")) >= 0);
+        test_equal_text(v, "{\"foo\" : \"quux2\", \"bar\" : \"quux\"}");
+        assert_se(json_variant_set_field(&v, "bar", NULL) >= 0);
+        test_equal_text(v, "{\"foo\" : \"quux2\", \"bar\" : null}");
+}
+
+TEST(tokenizer) {
+        test_tokenizer_one("x", -EINVAL);
+        test_tokenizer_one("", JSON_TOKEN_END);
+        test_tokenizer_one(" ", JSON_TOKEN_END);
+        test_tokenizer_one("0", JSON_TOKEN_UNSIGNED, (uint64_t) 0, JSON_TOKEN_END);
+        test_tokenizer_one("-0", JSON_TOKEN_INTEGER, (int64_t) 0, JSON_TOKEN_END);
+        test_tokenizer_one("1234", JSON_TOKEN_UNSIGNED, (uint64_t) 1234, JSON_TOKEN_END);
+        test_tokenizer_one("-1234", JSON_TOKEN_INTEGER, (int64_t) -1234, JSON_TOKEN_END);
+        test_tokenizer_one("18446744073709551615", JSON_TOKEN_UNSIGNED, (uint64_t) UINT64_MAX, JSON_TOKEN_END);
+        test_tokenizer_one("-9223372036854775808", JSON_TOKEN_INTEGER, (int64_t) INT64_MIN, JSON_TOKEN_END);
+        test_tokenizer_one("18446744073709551616", JSON_TOKEN_REAL, (double) 18446744073709551616.0L, JSON_TOKEN_END);
+        test_tokenizer_one("-9223372036854775809", JSON_TOKEN_REAL, (double) -9223372036854775809.0L, JSON_TOKEN_END);
+        test_tokenizer_one("-1234", JSON_TOKEN_INTEGER, (int64_t) -1234, JSON_TOKEN_END);
+        test_tokenizer_one("3.141", JSON_TOKEN_REAL, (double) 3.141, JSON_TOKEN_END);
+        test_tokenizer_one("0.0", JSON_TOKEN_REAL, (double) 0.0, JSON_TOKEN_END);
+        test_tokenizer_one("7e3", JSON_TOKEN_REAL, (double) 7e3, JSON_TOKEN_END);
+        test_tokenizer_one("-7e-3", JSON_TOKEN_REAL, (double) -7e-3, JSON_TOKEN_END);
+        test_tokenizer_one("true", JSON_TOKEN_BOOLEAN, true, JSON_TOKEN_END);
+        test_tokenizer_one("false", JSON_TOKEN_BOOLEAN, false, JSON_TOKEN_END);
+        test_tokenizer_one("null", JSON_TOKEN_NULL, JSON_TOKEN_END);
+        test_tokenizer_one("{}", JSON_TOKEN_OBJECT_OPEN, JSON_TOKEN_OBJECT_CLOSE, JSON_TOKEN_END);
+        test_tokenizer_one("\t {\n} \n", JSON_TOKEN_OBJECT_OPEN, JSON_TOKEN_OBJECT_CLOSE, JSON_TOKEN_END);
+        test_tokenizer_one("[]", JSON_TOKEN_ARRAY_OPEN, JSON_TOKEN_ARRAY_CLOSE, JSON_TOKEN_END);
+        test_tokenizer_one("\t [] \n\n", JSON_TOKEN_ARRAY_OPEN, JSON_TOKEN_ARRAY_CLOSE, JSON_TOKEN_END);
+        test_tokenizer_one("\"\"", JSON_TOKEN_STRING, "", JSON_TOKEN_END);
+        test_tokenizer_one("\"foo\"", JSON_TOKEN_STRING, "foo", JSON_TOKEN_END);
+        test_tokenizer_one("\"foo\\nfoo\"", JSON_TOKEN_STRING, "foo\nfoo", JSON_TOKEN_END);
+        test_tokenizer_one("{\"foo\" : \"bar\"}", JSON_TOKEN_OBJECT_OPEN, JSON_TOKEN_STRING, "foo", JSON_TOKEN_COLON, JSON_TOKEN_STRING, "bar", JSON_TOKEN_OBJECT_CLOSE, JSON_TOKEN_END);
+        test_tokenizer_one("{\"foo\" : [true, false]}", JSON_TOKEN_OBJECT_OPEN, JSON_TOKEN_STRING, "foo", JSON_TOKEN_COLON, JSON_TOKEN_ARRAY_OPEN, JSON_TOKEN_BOOLEAN, true, JSON_TOKEN_COMMA, JSON_TOKEN_BOOLEAN, false, JSON_TOKEN_ARRAY_CLOSE, JSON_TOKEN_OBJECT_CLOSE, JSON_TOKEN_END);
+        test_tokenizer_one("\"\xef\xbf\xbd\"", JSON_TOKEN_STRING, "\xef\xbf\xbd", JSON_TOKEN_END);
+        test_tokenizer_one("\"\\ufffd\"", JSON_TOKEN_STRING, "\xef\xbf\xbd", JSON_TOKEN_END);
+        test_tokenizer_one("\"\\uf\"", -EINVAL);
+        test_tokenizer_one("\"\\ud800a\"", -EINVAL);
+        test_tokenizer_one("\"\\udc00\\udc00\"", -EINVAL);
+        test_tokenizer_one("\"\\ud801\\udc37\"", JSON_TOKEN_STRING, "\xf0\x90\x90\xb7", JSON_TOKEN_END);
+
+        test_tokenizer_one("[1, 2, -3]", JSON_TOKEN_ARRAY_OPEN, JSON_TOKEN_UNSIGNED, (uint64_t) 1, JSON_TOKEN_COMMA, JSON_TOKEN_UNSIGNED, (uint64_t) 2, JSON_TOKEN_COMMA, JSON_TOKEN_INTEGER, (int64_t) -3, JSON_TOKEN_ARRAY_CLOSE, JSON_TOKEN_END);
+}
+
+TEST(variant) {
+        test_variant_one("{\"k\": \"v\", \"foo\": [1, 2, 3], \"bar\": {\"zap\": null}}", test_1);
+        test_variant_one("{\"mutant\": [1, null, \"1\", {\"1\": [1, \"1\"]}], \"thisisaverylongproperty\": 1.27}", test_2);
+        test_variant_one("{\"foo\" : \"\\u0935\\u093f\\u0935\\u0947\\u0915\\u0916\\u094d\\u092f\\u093e\\u0924\\u093f\\u0930\\u0935\\u093f\\u092a\\u094d\\u0932\\u0935\\u093e\\u0020\\u0939\\u093e\\u0928\\u094b\\u092a\\u093e\\u092f\\u0903\\u0964\"}", NULL);
+
+        test_variant_one("[ 0, -0, 0.0, -0.0, 0.000, -0.000, 0e0, -0e0, 0e+0, -0e-0, 0e-0, -0e000, 0e+000 ]", test_zeroes);
+}
+
+TEST(json_append) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL, *w = NULL;
+
+        assert_se(json_build(&v, JSON_BUILD_OBJECT(
+                                             JSON_BUILD_PAIR("b", JSON_BUILD_STRING("x")),
+                                             JSON_BUILD_PAIR("c", JSON_BUILD_CONST_STRING("y")),
+                                             JSON_BUILD_PAIR("a", JSON_BUILD_CONST_STRING("z")))) >= 0);
+
+        assert_se(json_append(&w, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("b", JSON_BUILD_STRING("x")))) >= 0);
+        assert_se(json_append(&w, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("c", JSON_BUILD_STRING("y")))) >= 0);
+        assert_se(json_append(&w, JSON_BUILD_OBJECT(JSON_BUILD_PAIR("a", JSON_BUILD_STRING("z")))) >= 0);
+
+        assert_se(json_variant_equal(v, w));
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);