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

unittest/test_relays.c

@@ -0,0 +1,46 @@
+#include "test.h"
+#include "relays.h"
+
+int test_relays() {
+  bool ret;
+  bool state=0;
+  uint8_t idx;
+  float last_change;
+
+  ret = relays_init("0,A");
+  ASSERT(ret!=0, "relays_init should not have taken '0,A'");
+  ret = relays_init("0,41");
+  ASSERT(ret!=0, "relays_init should not have taken '0,41'");
+  ret = relays_init("0,1,2,3,4,5,6,7,8");
+  ASSERT(ret!=0, "relays_init should not have taken '0,1,2,3,4,5,6,7,8'");
+  ret = relays_init(" 0, 2, ");
+  ASSERT(ret==0, "relays_init should have taken ' 0, 2, '");
+
+  ret = relays_init("12,13,14,16");
+  ASSERT(ret==0, "relays_init should have taken '12,13,14,16'");
+  idx = relays_find_by_gpio(1);
+  ASSERT(idx==255, "should not have gpio=1");
+  idx = relays_find_by_gpio(12);
+  ASSERT(idx==0, "should have gpio=12 at idx=0");
+  last_change = relays_get_last_change_by_gpio(12);
+  ASSERT(last_change==-1, "button at gpio=12 should have last_change==-1");
+  relays_set_by_gpio(12, true);
+  state = relays_get_by_gpio(12); 
+  ASSERT(state==true, "relay at gpio=12 should be state=true");
+  state = relays_get_by_idx(0);
+  ASSERT(state==true, "relay at idx=0 should be state=true");
+  state = relays_get_by_idx(1);
+  ASSERT(state==false, "relay at idx=1 should be state=false");
+  last_change = relays_get_last_change_by_gpio(12);
+  ASSERT(last_change>0, "button at gpio=12 should have last_change>0");
+  relays_set_by_idx(0, false);
+  state = relays_get_by_idx(0); 
+  ASSERT(state==false, "relay at idx=0 should be state=false");
+  state = relays_get_by_gpio(12); 
+  ASSERT(state==false, "relay at gpio=12 should be state=false");
+  last_change = relays_get_last_change_by_gpio(12);
+  ASSERT(last_change>0, "button at gpio=12 should have last_change>0");
+
+  return 0;
+}
+