From 385f6ad488e4d36d2d32e8a3ad2ef1502efaf21e Mon Sep 17 00:00:00 2001
From: Koen Zandberg <koen@bergzand.net>
Date: Thu, 30 Nov 2023 14:16:28 +0100
Subject: [PATCH] tests/pkg/mjson: Add test for mjson package

---
 tests/pkg/mjson/Makefile        |  6 +++
 tests/pkg/mjson/app.config.test |  2 +
 tests/pkg/mjson/main.c          | 80 +++++++++++++++++++++++++++++++++
 tests/pkg/mjson/tests/01-run.py | 14 ++++++
 4 files changed, 102 insertions(+)
 create mode 100644 tests/pkg/mjson/Makefile
 create mode 100644 tests/pkg/mjson/app.config.test
 create mode 100644 tests/pkg/mjson/main.c
 create mode 100755 tests/pkg/mjson/tests/01-run.py

diff --git a/tests/pkg/mjson/Makefile b/tests/pkg/mjson/Makefile
new file mode 100644
index 0000000000..cac857c6c4
--- /dev/null
+++ b/tests/pkg/mjson/Makefile
@@ -0,0 +1,6 @@
+include ../Makefile.pkg_common
+
+USEMODULE += embunit
+USEPKG += mjson
+
+include $(RIOTBASE)/Makefile.include
diff --git a/tests/pkg/mjson/app.config.test b/tests/pkg/mjson/app.config.test
new file mode 100644
index 0000000000..a81192b504
--- /dev/null
+++ b/tests/pkg/mjson/app.config.test
@@ -0,0 +1,2 @@
+CONFIG_MODULE_EMBUNIT=y
+CONFIG_PACKAGE_MJSON=y
diff --git a/tests/pkg/mjson/main.c b/tests/pkg/mjson/main.c
new file mode 100644
index 0000000000..91fb5754c5
--- /dev/null
+++ b/tests/pkg/mjson/main.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2023 Koen Zandberg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for mjson
+ *
+ * @author      Koen Zandberg <koen@bergzand.net>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include "embUnit.h"
+#include "mjson.h"
+
+void test_mjson_encode(void)
+{
+    /* Print into a statically allocated buffer */
+    char buf[100];
+    mjson_snprintf(buf, sizeof(buf), "{%Q:%d}", "a", 123);
+
+    static const char expected[] = "{\"a\":123}";
+
+    TEST_ASSERT_EQUAL_INT(0, strcmp(expected, buf));
+}
+
+void test_mjson_decode(void)
+{
+    static const char input[] = "{\"a\":1,\"b\":[2,false]}";  /* {"a":1,"b":[2,false]} */
+
+    double dval = 0;
+    int res = mjson_get_number(input, strlen(input), "$.a", &dval);
+    TEST_ASSERT_EQUAL_INT(1, res);
+    TEST_ASSERT_EQUAL_INT(1, dval);
+
+    const char *buf;
+    int buf_len;
+    res = mjson_find(input, strlen(input), "$.b", &buf, &buf_len);
+    TEST_ASSERT_EQUAL_INT(91, res);
+    TEST_ASSERT_EQUAL_INT(0, memcmp(buf, "[2,false]", buf_len));
+
+    res = mjson_get_number(input, strlen(input), "$.b[0]", &dval);
+    TEST_ASSERT_EQUAL_INT(1, res);
+    TEST_ASSERT_EQUAL_INT(2, dval);
+
+    int ival = 0;
+    res = mjson_get_bool(input, strlen(input), "$.b[1]", &ival);
+    TEST_ASSERT_EQUAL_INT(1, res);
+    TEST_ASSERT_EQUAL_INT(0, ival);
+
+}
+
+Test *tests_mjson(void)
+{
+    EMB_UNIT_TESTFIXTURES(fixtures) {
+        new_TestFixture(test_mjson_encode),
+        new_TestFixture(test_mjson_decode),
+    };
+
+    EMB_UNIT_TESTCALLER(mjson_tests, NULL, NULL, fixtures);
+    return (Test*)&mjson_tests;
+}
+
+int main(void)
+{
+    TESTS_START();
+    TESTS_RUN(tests_mjson());
+    TESTS_END();
+
+    return 0;
+}
diff --git a/tests/pkg/mjson/tests/01-run.py b/tests/pkg/mjson/tests/01-run.py
new file mode 100755
index 0000000000..593eef2621
--- /dev/null
+++ b/tests/pkg/mjson/tests/01-run.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2023 Koen Zandberg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+import sys
+from testrunner import run_check_unittests
+
+
+if __name__ == "__main__":
+    sys.exit(run_check_unittests())