3 files changed, 303 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 00000000..bb1fb398
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_cgroups_plugin.c
@@ -0,0 +1,130 @@
+// 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;
+
+struct k8s_test_data {
+    char *data;
+    char *name;
+    char *key[3];
+    char *value[3];
+    
+    const char *result_key[3];
+    const char *result_value[3];
+    int result_ls[3];
+    int i;
+};
+
+static int read_label_callback(const char *name, const char *value, void *data)
+{
+  struct k8s_test_data *test_data = (struct k8s_test_data *)data;
+
+  test_data->result_key[test_data->i] = name;
+  test_data->result_value[test_data->i] = value;
+
+  test_data->i++;
+
+  return 1;
+}
+
+static void test_cgroup_parse_resolved_name(void **state)
+{
+    UNUSED(state);
+
+    RRDLABELS *labels = rrdlabels_create();
+
+    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);
+
+        char *name = cgroup_parse_resolved_name_and_labels(labels, data);
+
+        assert_string_equal(name, test_data[i].name);
+
+        rrdlabels_walkthrough_read(labels, read_label_callback, &test_data[i]);
+
+        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];
+
+            const char *result_key = test_data[i].result_key[l];
+            const char *result_value = test_data[i].result_value[l];
+            int ls = test_data[i].result_ls[l];
+
+            assert_string_equal(key, result_key);
+            assert_string_equal(value, result_value);
+            assert_int_equal(RRDLABEL_SRC_AUTO | RRDLABEL_SRC_K8S, ls);
+        }
+
+        free(data);
+    }
+}
+
+int main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test(test_cgroup_parse_resolved_name),
+    };
+
+    int test_res = cmocka_run_group_tests_name("test_cgroup_parse_resolved_name", 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 00000000..3d68e923
--- /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 00000000..b13d4b19
--- /dev/null
+++ b/collectors/cgroups.plugin/tests/test_doubles.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "test_cgroups_plugin.h"
+
+void rrdset_is_obsolete___safe_from_collector_thread(RRDSET *st)
+{
+    UNUSED(st);
+}
+
+void rrdset_isnot_obsolete___safe_from_collector_thread(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);
+}
+
+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;
+}
+
+const RRDSETVAR_ACQUIRED *rrdsetvar_custom_chart_variable_add_and_acquire(RRDSET *st, const char *name)
+{
+    UNUSED(st);
+    UNUSED(name);
+
+    return NULL;
+}
+
+void rrdsetvar_custom_chart_variable_set(RRDSET *st, const RRDSETVAR_ACQUIRED *rsa, NETDATA_DOUBLE value)
+{
+    UNUSED(st);
+    UNUSED(rsa);
+    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_charts(struct pressure_charts *charts)
+{
+    UNUSED(charts);
+}
+
+void netdev_rename_device_add(
+    const char *host_device, const char *container_device, const char *container_name, DICTIONARY *labels, const char *ctx_prefix)
+{
+    UNUSED(host_device);
+    UNUSED(container_device);
+    UNUSED(container_name);
+    UNUSED(labels);
+    UNUSED(ctx_prefix);
+}
+
+void netdev_rename_device_del(const char *host_device)
+{
+    UNUSED(host_device);
+}
+
+void rrdcalc_update_rrdlabels(RRDSET *st) {
+    (void)st;
+}
+
+void db_execute(const char *cmd)
+{
+    UNUSED(cmd);
+}