add missing binary-validation.cpp file for test case

test/binary-validation.cpp

@@ -0,0 +1,135 @@
+// bson-validate.cpp
+
+#include <iostream>
+#include <nlohmann/json-schema.hpp>
+#include <nlohmann/json.hpp>
+
+int error_count = 0;
+
+#define EXPECT_EQ(a, b)                                              \
+	do {                                                             \
+		if (a != b) {                                                \
+			std::cerr << "Failed: '" << a << "' != '" << b << "'\n"; \
+			error_count++;                                           \
+		}                                                            \
+	} while (0)
+
+using json = nlohmann::json;
+using validator = nlohmann::json_schema::json_validator;
+
+// check binary data validation
+const json bson_schema = json::parse(R"(
+{
+  "type": "object",
+  "properties": {
+    "standard_string": {
+      "type": "string"
+    },
+    "binary_data": {
+      "type": "string",
+      "contentEncoding": "binary"
+    }
+  },
+  "additionalProperties": false
+}
+)");
+
+const json array_of_types = json::parse(R"(
+{
+  "type": "object",
+  "properties": {
+    "something": {
+      "type": ["string", "number", "boolean"],
+      "contentEncoding": "binary"
+    }
+  }
+}
+)");
+
+const json array_of_types_without_binary = json::parse(R"(
+{
+  "type": "object",
+  "properties": {
+    "something": {
+      "type": ["string", "number", "boolean"]
+    }
+  }
+}
+)");
+
+class store_ptr_err_handler : public nlohmann::json_schema::basic_error_handler
+{
+	void error(const nlohmann::json::json_pointer &ptr, const json &, const std::string &message) override
+	{
+		nlohmann::json_schema::basic_error_handler::error(ptr, "", message);
+		std::cerr << "ERROR: '" << ptr << "' - '"
+		          << ""
+		          << "': " << message << "\n";
+		failed_pointers.push_back(ptr);
+	}
+
+public:
+	std::vector<nlohmann::json::json_pointer> failed_pointers;
+
+	void reset() override
+	{
+		nlohmann::json_schema::basic_error_handler::reset();
+		failed_pointers.clear();
+	}
+};
+
+int main()
+{
+	validator val;
+	val.set_root_schema(bson_schema);
+
+	// create some bson doc
+	json::binary_t arr;
+	std::string as_binary = "hello world";
+	std::copy(as_binary.begin(), as_binary.end(), std::back_inserter(arr));
+
+	json binary = json::binary(arr);
+
+	// all right
+	store_ptr_err_handler err{};
+	val.validate({{"standard_string", "some string"}, {"binary_data", binary}}, err);
+	EXPECT_EQ(err.failed_pointers.size(), 0);
+	err.reset();
+
+	// invalid binary data
+	val.validate({{"binary_data", "string, but expect binary data"}}, err);
+	EXPECT_EQ(err.failed_pointers.size(), 1);
+	EXPECT_EQ(err.failed_pointers[0].to_string(), "/binary_data");
+	err.reset();
+
+	// also check that simple string not accept binary data
+	val.validate({{"standard_string", binary}, {"binary_data", binary}}, err);
+	EXPECT_EQ(err.failed_pointers.size(), 1);
+	EXPECT_EQ(err.failed_pointers[0].to_string(), "/standard_string");
+	err.reset();
+
+	/////////////////////////////////////
+	// check with array of types
+
+	// check simple types
+	val.set_root_schema(array_of_types);
+	val.validate({{"something", "string"}}, err);
+	val.validate({{"something", 1}}, err);
+	val.validate({{"something", false}}, err);
+	EXPECT_EQ(err.failed_pointers.size(), 0);
+	err.reset();
+
+	// check binary data
+	val.validate({{"something", binary}}, err);
+	EXPECT_EQ(err.failed_pointers.size(), 0);
+	err.reset();
+
+	// and check that you can't set binary data if contentEncoding don't set
+	val.set_root_schema(array_of_types_without_binary);
+	val.validate({{"something", binary}}, err);
+	EXPECT_EQ(err.failed_pointers.size(), 1);
+	EXPECT_EQ(err.failed_pointers[0], "/something");
+	err.reset();
+
+	return error_count;
+}