Merging upstream version 1.18.1.

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

3 files changed, 56 insertions, 0 deletions

diff --git a/libnetdata/storage_number/Makefile.am b/libnetdata/storage_number/Makefile.am
index 1cb69ed99..349dd71f1 100644
--- a/libnetdata/storage_number/Makefile.am
+++ b/libnetdata/storage_number/Makefile.am
@@ -3,6 +3,9 @@
 AUTOMAKE_OPTIONS = subdir-objects
 MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
 
+SUBDIRS = \
+	tests \
+	$(NULL)
 
 dist_noinst_DATA = \
 	README.md \
diff --git a/libnetdata/storage_number/tests/Makefile.am b/libnetdata/storage_number/tests/Makefile.am
new file mode 100644
index 000000000..babdcf0df
--- /dev/null
+++ b/libnetdata/storage_number/tests/Makefile.am
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
diff --git a/libnetdata/storage_number/tests/test_storage_number.c b/libnetdata/storage_number/tests/test_storage_number.c
new file mode 100644
index 000000000..61a0c1880
--- /dev/null
+++ b/libnetdata/storage_number/tests/test_storage_number.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../../libnetdata.h"
+#include "../../required_dummies.h"
+#include <setjmp.h>
+#include <cmocka.h>
+
+static void test_number_pinting(void **state)
+{
+    (void)state;
+
+    char value[50];
+
+    print_calculated_number(value, 0);
+    assert_string_equal(value, "0");
+
+    print_calculated_number(value, 0.0000001);
+    assert_string_equal(value, "0.0000001");
+
+    print_calculated_number(value, 0.00000009);
+    assert_string_equal(value, "0.0000001");
+
+    print_calculated_number(value, 0.000000001);
+    assert_string_equal(value, "0");
+
+    print_calculated_number(value, 99.99999999999999999);
+    assert_string_equal(value, "100");
+
+    print_calculated_number(value, -99.99999999999999999);
+    assert_string_equal(value, "-100");
+
+    print_calculated_number(value, 123.4567890123456789);
+    assert_string_equal(value, "123.456789");
+
+    print_calculated_number(value, 9999.9999999);
+    assert_string_equal(value, "9999.9999999");
+
+    print_calculated_number(value, -9999.9999999);
+    assert_string_equal(value, "-9999.9999999");
+}
+
+int main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test(test_number_pinting)
+    };
+
+    return cmocka_run_group_tests_name("storage_number", tests, NULL, NULL);
+}