Add unit tests for buttons / relays; and a bunch of mocks :)

unittest/test_buttons.c

@@ -0,0 +1,49 @@
+#include "test.h"
+#include "buttons.h"
+
+extern uint32_t mqtt_pub_count;
+extern uint32_t mqtt_sub_count;
+
+int test_buttons() {
+  bool ret;
+  uint8_t idx;
+  float last_change;
+
+  ret = buttons_init("0,A");
+  ASSERT(ret!=0, "buttons_init should not have taken '0,A'");
+  ret = buttons_init("0,41");
+  ASSERT(ret!=0, "buttons_init should not have taken '0,41'");
+  ret = buttons_init("0,1,2,3,4,5,6,7,8");
+  ASSERT(ret!=0, "buttons_init should not have taken '0,1,2,3,4,5,6,7,8'");
+  ret = buttons_init("0");
+  ASSERT(ret==0, "buttons_init should have taken '0'");
+
+  ret = relays_init("16,12,13,14");
+  ret = buttons_init("0,2");
+  ASSERT(ret==0, "buttons_init should have taken ' 0, 2, '");
+  idx = buttons_find_by_gpio(1);
+  ASSERT(idx==255, "should not have gpio=1");
+  idx = buttons_find_by_gpio(2);
+  ASSERT(idx==1, "should have gpio=2 at idx=1");
+  last_change = buttons_get_last_change_by_gpio(2);
+  ASSERT(last_change==-1, "button at gpio=2 should have last_change==-1");
+  mqtt_pub_count=0;
+  buttons_touch_by_gpio(2);
+  ASSERT(mqtt_pub_count==2, "button should have send mqtt message");
+  buttons_touch_by_gpio(0);
+  ASSERT(mqtt_pub_count==4, "button should have send mqtt message");
+  buttons_touch_by_gpio(1);
+  ASSERT(mqtt_pub_count==4, "button should not have send mqtt message");
+  last_change = buttons_get_last_change_by_gpio(2);
+  ASSERT(last_change>0, "button at gpio=2 should have last_change>0");
+  last_change = buttons_get_last_change_by_idx(0);
+  ASSERT(last_change>0, "button at idx=0 should have last_change>0");
+  last_change = buttons_get_last_change_by_idx(1);
+  ASSERT(last_change>0, "button at idx=1 should have last_change>0");
+  last_change = buttons_get_last_change_by_idx(2);
+  ASSERT(last_change==-1, "button at idx=2 should have last_change==-1");
+
+  return 0;
+}
+
+