3 files changed, 288 insertions, 0 deletions
diff --git a/collectors/cgroups.plugin/tests/test_cgroups_plugin.c b/collectors/cgroups.plugin/tests/test_cgroups_plugin.c
new file mode 100644
index 000000000..be8ea2c48
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_cgroups_plugin.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "test_cgroups_plugin.h"
+#include "libnetdata/required_dummies.h"
+
+RRDHOST *localhost;
+int netdata_zero_metrics_enabled = 1;
+struct config netdata_config;
+char *netdata_configured_primary_plugins_dir = NULL;
+
+static void test_parse_k8s_data(void **state)
+{
+    UNUSED(state);
+
+    struct label *labels = (struct label *)0xff;
+
+    struct k8s_test_data {
+        char *data;
+        char *name;
+        char *key[3];
+        char *value[3];
+    };
+
+    struct k8s_test_data test_data[] = {
+        // One label
+        { .data = "name label1=\"value1\"",
+          .name = "name",
+          .key[0] = "label1", .value[0] = "value1" },
+
+        // Three labels
+        { .data = "name label1=\"value1\",label2=\"value2\",label3=\"value3\"",
+          .name = "name",
+          .key[0] = "label1", .value[0] = "value1",
+          .key[1] = "label2", .value[1] = "value2",
+          .key[2] = "label3", .value[2] = "value3" },
+
+        // Comma at the end of the data string
+        { .data = "name label1=\"value1\",",
+          .name = "name",
+          .key[0] = "label1", .value[0] = "value1" },
+
+        // Equals sign in the value
+        { .data = "name label1=\"value=1\"",
+          .name = "name",
+          .key[0] = "label1", .value[0] = "value=1" },
+
+        // Double quotation mark in the value
+        { .data = "name label1=\"value\"1\"",
+          .name = "name",
+          .key[0] = "label1", .value[0] = "value" },
+
+        // Escaped double quotation mark in the value
+        { .data = "name label1=\"value\\\"1\"",
+          .name = "name",
+          .key[0] = "label1", .value[0] = "value\\\"1" },
+
+        // Equals sign in the key
+        { .data = "name label=1=\"value1\"",
+          .name = "name",
+          .key[0] = "label", .value[0] = "1=\"value1\"" },
+
+        // Skipped value
+        { .data = "name label1=,label2=\"value2\"",
+          .name = "name",
+          .key[0] = "label2", .value[0] = "value2" },
+
+        // A pair of equals signs
+        { .data = "name= =",
+          .name = "name=" },
+
+        // A pair of commas
+        { .data = "name, ,",
+          .name = "name," },
+
+        { .data = NULL }
+    };
+
+    for (int i = 0; test_data[i].data != NULL; i++) {
+        char *data = strdup(test_data[i].data);
+
+        for (int l = 0; l < 3 && test_data[i].key[l] != NULL; l++) {
+            char *key = test_data[i].key[l];
+            char *value = test_data[i].value[l];
+
+            expect_function_call(__wrap_add_label_to_list);
+            expect_value(__wrap_add_label_to_list, l, 0xff);
+            expect_string(__wrap_add_label_to_list, key, key);
+            expect_string(__wrap_add_label_to_list, value, value);
+            expect_value(__wrap_add_label_to_list, label_source, LABEL_SOURCE_KUBERNETES);    
+        }
+
+        char *name = parse_k8s_data(&labels, data);
+
+        assert_string_equal(name, test_data[i].name);
+        assert_ptr_equal(labels, 0xff);
+
+        free(data);
+    }
+}
+
+int main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test(test_parse_k8s_data),
+    };
+
+    int test_res = cmocka_run_group_tests_name("test_parse_k8s_data", tests, NULL, NULL);
+
+    return test_res;
+}
diff --git a/collectors/cgroups.plugin/tests/test_cgroups_plugin.h b/collectors/cgroups.plugin/tests/test_cgroups_plugin.h
new file mode 100644
index 000000000..3d68e9230
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_cgroups_plugin.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef TEST_CGROUPS_PLUGIN_H
+#define TEST_CGROUPS_PLUGIN_H 1
+
+#include "libnetdata/libnetdata.h"
+
+#include "../sys_fs_cgroup.h"
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <stdint.h>
+#include <cmocka.h>
+
+#endif /* TEST_CGROUPS_PLUGIN_H */
diff --git a/collectors/cgroups.plugin/tests/test_doubles.c b/collectors/cgroups.plugin/tests/test_doubles.c
new file mode 100644
index 000000000..5572fb2f5
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_doubles.c
@@ -0,0 +1,162 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "test_cgroups_plugin.h"
+
+void rrdset_is_obsolete(RRDSET *st)
+{
+    UNUSED(st);
+}
+
+void rrdset_isnot_obsolete(RRDSET *st)
+{
+    UNUSED(st);
+}
+
+struct mountinfo *mountinfo_read(int do_statvfs)
+{
+    UNUSED(do_statvfs);
+
+    return NULL;
+}
+
+struct mountinfo *
+mountinfo_find_by_filesystem_mount_source(struct mountinfo *root, const char *filesystem, const char *mount_source)
+{
+    UNUSED(root);
+    UNUSED(filesystem);
+    UNUSED(mount_source);
+
+    return NULL;
+}
+
+struct mountinfo *
+mountinfo_find_by_filesystem_super_option(struct mountinfo *root, const char *filesystem, const char *super_options)
+{
+    UNUSED(root);
+    UNUSED(filesystem);
+    UNUSED(super_options);
+
+    return NULL;
+}
+
+void mountinfo_free_all(struct mountinfo *mi)
+{
+    UNUSED(mi);
+}
+
+struct label *__wrap_add_label_to_list(struct label *l, char *key, char *value, LABEL_SOURCE label_source)
+{
+    function_called();
+    check_expected_ptr(l);
+    check_expected_ptr(key);
+    check_expected_ptr(value);
+    check_expected(label_source);
+    return l;
+}
+
+void rrdset_update_labels(RRDSET *st, struct label *labels)
+{
+    UNUSED(st);
+    UNUSED(labels);
+}
+
+RRDSET *rrdset_create_custom(
+    RRDHOST *host, const char *type, const char *id, const char *name, const char *family, const char *context,
+    const char *title, const char *units, const char *plugin, const char *module, long priority, int update_every,
+    RRDSET_TYPE chart_type, RRD_MEMORY_MODE memory_mode, long history_entries)
+{
+    UNUSED(host);
+    UNUSED(type);
+    UNUSED(id);
+    UNUSED(name);
+    UNUSED(family);
+    UNUSED(context);
+    UNUSED(title);
+    UNUSED(units);
+    UNUSED(plugin);
+    UNUSED(module);
+    UNUSED(priority);
+    UNUSED(update_every);
+    UNUSED(chart_type);
+    UNUSED(memory_mode);
+    UNUSED(history_entries);
+
+    return NULL;
+}
+
+RRDDIM *rrddim_add_custom(
+    RRDSET *st, const char *id, const char *name, collected_number multiplier, collected_number divisor,
+    RRD_ALGORITHM algorithm, RRD_MEMORY_MODE memory_mode)
+{
+    UNUSED(st);
+    UNUSED(id);
+    UNUSED(name);
+    UNUSED(multiplier);
+    UNUSED(divisor);
+    UNUSED(algorithm);
+    UNUSED(memory_mode);
+
+    return NULL;
+}
+
+collected_number rrddim_set(RRDSET *st, const char *id, collected_number value)
+{
+    UNUSED(st);
+    UNUSED(id);
+    UNUSED(value);
+
+    return 0;
+}
+
+collected_number rrddim_set_by_pointer(RRDSET *st, RRDDIM *rd, collected_number value)
+{
+    UNUSED(st);
+    UNUSED(rd);
+    UNUSED(value);
+
+    return 0;
+}
+
+RRDSETVAR *rrdsetvar_custom_chart_variable_create(RRDSET *st, const char *name)
+{
+    UNUSED(st);
+    UNUSED(name);
+
+    return NULL;
+}
+
+void rrdsetvar_custom_chart_variable_set(RRDSETVAR *rs, calculated_number value)
+{
+    UNUSED(rs);
+    UNUSED(value);
+}
+
+void rrdset_next_usec(RRDSET *st, usec_t microseconds)
+{
+    UNUSED(st);
+    UNUSED(microseconds);
+}
+
+void rrdset_done(RRDSET *st)
+{
+    UNUSED(st);
+}
+
+void update_pressure_chart(struct pressure_chart *chart)
+{
+    UNUSED(chart);
+}
+
+void netdev_rename_device_add(
+    const char *host_device, const char *container_device, const char *container_name, struct label *labels)
+{
+    UNUSED(host_device);
+    UNUSED(container_device);
+    UNUSED(container_name);
+    UNUSED(labels);
+}
+
+void netdev_rename_device_del(const char *host_device)
+{
+    UNUSED(host_device);
+}