comparison ext/json11/test.cpp @ 150:bf8e3e7dd7de

Move some things around, and add overall test script

+#include <string>
+#include <cstdio>
+#include <cstring>
+#include <iostream>
+#include <sstream>
+#include "json11.hpp"
+#include <cassert>
+#include <list>
+#include <set>
+#include <unordered_map>
+
+using namespace json11;
+using std::string;
+
+// Check that Json has the properties we want.
+#include <type_traits>
+#define CHECK_TRAIT(x) static_assert(std::x::value, #x)
+CHECK_TRAIT(is_nothrow_constructible<Json>);
+CHECK_TRAIT(is_nothrow_default_constructible<Json>);
+CHECK_TRAIT(is_copy_constructible<Json>);
+CHECK_TRAIT(is_nothrow_move_constructible<Json>);
+CHECK_TRAIT(is_copy_assignable<Json>);
+CHECK_TRAIT(is_nothrow_move_assignable<Json>);
+CHECK_TRAIT(is_nothrow_destructible<Json>);
+
+void parse_from_stdin() {
+    string buf;
+    string line;
+    while (std::getline(std::cin, line)) {
+        buf += line + "\n";
+    }
+
+    string err;
+    auto json = Json::parse(buf, err);
+    if (!err.empty()) {
+        printf("Failed: %s\n", err.c_str());
+    } else {
+        printf("Result: %s\n", json.dump().c_str());
+    }
+}
+
+int main(int argc, char **argv) {
+    if (argc == 2 && argv[1] == string("--stdin")) {
+        parse_from_stdin();
+        return 0;
+    }
+
+    const string simple_test =
+        R"({"k1":"v1", "k2":42, "k3":["a",123,true,false,null]})";
+
+    string err;
+    auto json = Json::parse(simple_test, err);
+
+    std::cout << "k1: " << json["k1"].string_value() << "\n";
+    std::cout << "k3: " << json["k3"].dump() << "\n";
+
+    for (auto &k : json["k3"].array_items()) {
+        std::cout << "    - " << k.dump() << "\n";
+    }
+
+    const string comment_test = R"({
+      // comment /* with nested comment */
+      "a": 1,
+      // comment
+      // continued
+      "b": "text",
+      /* multi
+         line
+         comment */
+      // and single-line comment
+      "c": [1, 2, 3]
+    })";
+
+    string err_comment;
+    auto json_comment = Json::parse(
+      comment_test, err_comment, JsonParse::COMMENTS);
+    if (!err_comment.empty()) {
+        printf("Failed: %s\n", err_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_comment.dump().c_str());
+    }
+
+    string failing_comment_test = R"({
+      /* bad comment
+      "a": 1,
+    })";
+
+    string err_failing_comment;
+    auto json_failing_comment = Json::parse(
+      failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
+    if (!err_failing_comment.empty()) {
+        printf("Failed: %s\n", err_failing_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_failing_comment.dump().c_str());
+    }
+
+    failing_comment_test = R"({
+      / / bad comment })";
+
+    json_failing_comment = Json::parse(
+      failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
+    if (!err_failing_comment.empty()) {
+        printf("Failed: %s\n", err_failing_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_failing_comment.dump().c_str());
+    }
+
+    failing_comment_test = R"({// bad comment })";
+
+    json_failing_comment = Json::parse(
+      failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
+    if (!err_failing_comment.empty()) {
+        printf("Failed: %s\n", err_failing_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_failing_comment.dump().c_str());
+    }
+
+    failing_comment_test = R"({
+          "a": 1
+        }/)";
+
+    json_failing_comment = Json::parse(
+      failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
+    if (!err_failing_comment.empty()) {
+        printf("Failed: %s\n", err_failing_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_failing_comment.dump().c_str());
+    }
+
+    failing_comment_test = R"({/* bad
+                                  comment *})";
+
+    json_failing_comment = Json::parse(
+      failing_comment_test, err_failing_comment, JsonParse::COMMENTS);
+    if (!err_failing_comment.empty()) {
+        printf("Failed: %s\n", err_failing_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_failing_comment.dump().c_str());
+    }
+
+    std::list<int> l1 { 1, 2, 3 };
+    std::vector<int> l2 { 1, 2, 3 };
+    std::set<int> l3 { 1, 2, 3 };
+    assert(Json(l1) == Json(l2));
+    assert(Json(l2) == Json(l3));
+
+    std::map<string, string> m1 { { "k1", "v1" }, { "k2", "v2" } };
+    std::unordered_map<string, string> m2 { { "k1", "v1" }, { "k2", "v2" } };
+    assert(Json(m1) == Json(m2));
+
+    // Json literals
+    Json obj = Json::object({
+        { "k1", "v1" },
+        { "k2", 42.0 },
+        { "k3", Json::array({ "a", 123.0, true, false, nullptr }) },
+    });
+
+    std::cout << "obj: " << obj.dump() << "\n";
+
+    assert(Json("a").number_value() == 0);
+    assert(Json("a").string_value() == "a");
+    assert(Json().number_value() == 0);
+
+    assert(obj == json);
+    assert(Json(42) == Json(42.0));
+    assert(Json(42) != Json(42.1));
+
+    const string unicode_escape_test =
+        R"([ "blah\ud83d\udca9blah\ud83dblah\udca9blah\u0000blah\u1234" ])";
+
+    const char utf8[] = "blah" "\xf0\x9f\x92\xa9" "blah" "\xed\xa0\xbd" "blah"
+                        "\xed\xb2\xa9" "blah" "\0" "blah" "\xe1\x88\xb4";
+
+    Json uni = Json::parse(unicode_escape_test, err);
+    assert(uni[0].string_value().size() == (sizeof utf8) - 1);
+    assert(std::memcmp(uni[0].string_value().data(), utf8, sizeof utf8) == 0);
+
+    // Demonstrates the behavior change in Xcode 7 / Clang 3.7 described
+    // here: https://llvm.org/bugs/show_bug.cgi?id=23812
+    Json nested_array = Json::array { Json::array { 1, 2, 3 } };
+    assert(nested_array.is_array());
+    assert(nested_array.array_items().size() == 1);
+    assert(nested_array.array_items()[0].is_array());
+    assert(nested_array.array_items()[0].array_items().size() == 3);
+
+    Json my_json = Json::object {
+        { "key1", "value1" },
+        { "key2", false },
+        { "key3", Json::array { 1, 2, 3 } },
+    };
+    std::string json_str = my_json.dump();
+    printf("%s\n", json_str.c_str());
+
+    class Point {
+    public:
+        int x;
+        int y;
+        Point (int x, int y) : x(x), y(y) {}
+        Json to_json() const { return Json::array { x, y }; }
+    };
+
+    std::vector<Point> points = { { 1, 2 }, { 10, 20 }, { 100, 200 } };
+    std::string points_json = Json(points).dump();
+    printf("%s\n", points_json.c_str());
+}