machinarium: add machinarium_stat() test

tests/machinarium_test.c

@@ -21,6 +21,8 @@ extern void test_join(void);
 extern void test_condition0(void);
 extern void test_condition1(void);
 
+extern void test_stat(void);
+
 extern void test_signal0(void);
 extern void test_signal1(void);
 extern void test_signal2(void);
@@ -86,6 +88,7 @@ main(int argc, char *argv[])
 	machinarium_test(test_join);
 	machinarium_test(test_condition0);
 	machinarium_test(test_condition1);
+	machinarium_test(test_stat);
 	machinarium_test(test_signal0);
 	machinarium_test(test_signal1);
 	machinarium_test(test_signal2);

tests/makefile

@@ -15,6 +15,7 @@ OBJECTS    = machinarium_test.o \
              test_join.o \
              test_condition0.o \
              test_condition1.o \
+             test_stat.o \
              test_signal0.o \
              test_signal1.o \
              test_signal2.o \

tests/test_stat.c

@@ -0,0 +1,50 @@
+
+/*
+ * machinarium.
+ *
+ * Cooperative multitasking engine.
+*/
+
+#include <machinarium.h>
+#include <machinarium_test.h>
+
+static void
+coroutine(void *arg)
+{
+	machine_sleep(100);
+}
+
+void
+test_stat(void)
+{
+	machinarium_init();
+
+	int count_machine = 0;
+	int count_coroutine = 0;
+	int count_coroutine_cache = 0;
+
+	machinarium_stat(&count_machine, &count_coroutine,
+	                 &count_coroutine_cache);
+
+	test(count_machine == 3); /* thread pool */
+
+	int id;
+	id = machine_create("test", coroutine, NULL);
+	test(id != -1);
+
+	machinarium_stat(&count_machine, &count_coroutine,
+	                 &count_coroutine_cache);
+
+	test(count_machine == 4);
+
+	int rc;
+	rc = machine_wait(id);
+	test(rc != -1);
+
+	machinarium_stat(&count_machine, &count_coroutine,
+	                 &count_coroutine_cache);
+
+	test(count_machine == 3);
+
+	machinarium_free();
+}