+ test {INCRBYFLOAT against non existing key} {
+ r del novar
+ list [roundFloat [r incrbyfloat novar 1]] \
+ [roundFloat [r get novar]] \
+ [roundFloat [r incrbyfloat novar 0.25]] \
+ [roundFloat [r get novar]]
+ } {1 1 1.25 1.25}
+
+ test {INCRBYFLOAT against key originally set with SET} {
+ r set novar 1.5
+ roundFloat [r incrbyfloat novar 1.5]
+ } {3}
+
+ test {INCRBYFLOAT over 32bit value} {
+ r set novar 17179869184
+ r incrbyfloat novar 1.5
+ } {17179869185.5}
+
+ test {INCRBYFLOAT over 32bit value with over 32bit increment} {
+ r set novar 17179869184
+ r incrbyfloat novar 17179869184
+ } {34359738368}
+
+ test {INCRBYFLOAT fails against key with spaces (left)} {
+ set err {}
+ r set novar " 11"
+ catch {r incrbyfloat novar 1.0} err
+ format $err
+ } {ERR*valid*}
+
+ test {INCRBYFLOAT fails against key with spaces (right)} {
+ set err {}
+ r set novar "11 "
+ catch {r incrbyfloat novar 1.0} err
+ format $err
+ } {ERR*valid*}
+
+ test {INCRBYFLOAT fails against key with spaces (both)} {
+ set err {}
+ r set novar " 11 "
+ catch {r incrbyfloat novar 1.0} err
+ format $err
+ } {ERR*valid*}
+
+ test {INCRBYFLOAT fails against a key holding a list} {
+ r del mylist
+ set err {}
+ r rpush mylist 1
+ catch {r incrbyfloat mylist 1.0} err
+ r del mylist
+ format $err
+ } {ERR*kind*}
+
+ test {INCRBYFLOAT does not allow NaN or Infinity} {
+ r set foo 0
+ set err {}
+ catch {r incrbyfloat foo +inf} err
+ set err
+ # p.s. no way I can force NaN to test it from the API because
+ # there is no way to increment / decrement by infinity nor to
+ # perform divisions.
+ } {ERR*would produce*}
+
+ test {INCRBYFLOAT decrement} {
+ r set foo 1
+ roundFloat [r incrbyfloat foo -1.1]
+ } {-0.1}
+