AK: Make a tiny JSON unit test based on a saved VisualBuilder form.

AK/Tests/TestJSON.cpp

@@ -0,0 +1,47 @@
+#include "TestHelpers.h"
+#include <AK/AKString.h>
+#include <AK/HashMap.h>
+#include <AK/JsonArray.h>
+#include <AK/JsonObject.h>
+#include <AK/JsonValue.h>
+#include <AK/StringBuilder.h>
+
+typedef HashMap<int, int> IntIntMap;
+
+int main()
+{
+    FILE* fp = fopen("../../Base/home/anon/test.frm", "r");
+    ASSERT(fp);
+
+    StringBuilder builder;
+    for (;;) {
+        char buffer[1024];
+        if (!fgets(buffer, sizeof(buffer), fp))
+            break;
+        builder.append(buffer);
+    }
+
+    fclose(fp);
+
+    JsonValue form_json = JsonValue::from_string(builder.to_string());
+
+    EXPECT(form_json.is_object());
+
+    auto name = form_json.as_object().get("name").to_string();
+
+    EXPECT_EQ(name, "Form1");
+
+    auto widgets = form_json.as_object().get("widgets").as_array();
+
+    widgets.for_each([&](const JsonValue& widget_value) {
+        auto& widget_object = widget_value.as_object();
+        auto widget_class = widget_object.get("class").as_string();
+        widget_object.for_each_member([&](auto& property_name, const JsonValue& property_value) {
+            (void)property_name;
+            (void)property_value;
+            //dbgprintf("Set property %s.%s to '%s'\n", widget_class.characters(), property_name.characters(), property_value.serialized().characters());
+        });
+    });
+
+    return 0;
+}