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#..
Tests for the stuff defined in lib/control_flow.nom
use "core"
do nothing
action [test conditionals]
if: yes
%loc1 <- (yes)
if: no
barf "entered if 'no' conditional"
unless: yes
barf "entered unless 'yes' conditional"
if: yes
%loc2 <- (yes)
..else
barf "entered if 'yes' else conditional"
unless: no
%loc3 <- (yes)
..else
barf "entered unless 'no' else conditional"
assume (all of [%loc1 = (nil), %loc2 = (nil), %loc3 = (nil)]) or barf "conditionals leaking locals"
assume ((5 if (yes) else 1) = 5)
assume ((5 if (no) else 1) = 1)
action [return nil]: return (nil)
assume (((return nil) if (yes) else 99) = (nil))
go to %skip
barf "go-to failed."
--- %skip ---
%tot <- 0
for %x in [1,2,3]
%tot +<- %x
assume (%tot = 6) or barf "for-loop failed"
%tot <- 0
for all [1,2,3]
%tot +<- %
assume (%tot = 6) or barf "for-all-loop failed"
%x <- 0
repeat
%x +<- 1
if (%x = 3): stop repeating
if (%x > 3): barf "Failed to stop repeat loop"
assume (%x = 3) or barf "Failed to repeat"
%x <- 0
repeat 5 times
%x +<- 1
assume (%x = 5) or barf "Failed to repeat 5 times"
<- {%x:0,%y:0}
for all [1,2,3]
repeat 5 times
do next repeat
%x +<- 1
%y +<- 1
assume ([%x,%y] = [0,3]) or barf "Failed to continue repeat"
<- {%x:0,%y:0}
for all [1,2,3]
repeat 5 times
do next %
%x +<- 1
%y +<- 1
assume ([%x,%y] = [0,0]) or barf "Failed to continue for"
<- {%x:0,%y:0}
for all [1,2,3]
repeat 5 times
stop repeating
%x +<- 1
%y +<- 1
assume ([%x,%y] = [0,3]) or barf "Failed to stop repeat"
<- {%x:0,%y:0}
for all [1,2,3]
repeat 5 times
stop %
%x +<- 1
%y +<- 1
assume ([%x,%y] = [0,0]) or barf "Failed to stop for"
%x <- 0
repeat while: %x < 10
%x +<- 1
assume (%x = 10) or barf "repeat-while failed"
%x <- 0
repeat until: %x = 10
%x +<- 1
assume (%x = 10) or barf "repeat-until failed"
%x <- 0
for %i from 1 to 3: %x +<- %i
assume (%x = 6) or barf "Numeric for range failed"
%x <- 0
for %i from 3 to 1 via -1: %x +<- %i
assume (%x = 6) or barf "backwards numeric for range failed"
%x <- 0
for all 1 to 3: %x +<- %
assume (%x = 6) or barf "terse numeric for range failed"
%result <- {}
for %key = %value in {x:1,y:2}
(%result's ("\%key\%key")) <- (%value * 11)
assume (%result = {xx:11,yy:22}) or barf "key/value iteration failed"
for %key = %value in {x:1,y:2}
stop %key
barf "stopping key failed"
for %key = %value in {x:1,y:2}
stop %value
barf "stopping value failed"
for %key = %value in {x:1,y:2}
do next %key
barf "skipping key failed"
for %key = %value in {x:1,y:2}
do next %value
barf "skipping value failed"
action [barfer]: barf "this should never be reached"
when
* (no): barf "'when' fail"
* (no)
* (3 > 4): barf "'when' fail 2"
* (yes)
* (barfer): do nothing
* (99 > 1): barf "Fell through incorrectly"
%else_worked <- (no)
when
* (no): barf
* else: %else_worked <- (yes)
assume %else_worked or barf "when..else failed"
action [test when scope]
when
* (yes): %leaked <- (yes)
test when scope
assume (not %leaked) or barf "'when' is leaking locals"
%when_worked <- (no)
when 4 = ?
* 1
* 2: barf "'when = ?' fail"
* 3
* 4
* (barfer): %when_worked <- (yes)
assume %when_worked
%when_worked <- (no)
when 5 = ?
* 6: barf
* else: %when_worked <- (yes)
assume %when_worked
try: barf
..and if it succeeds: barf "try failed."
%worked <- (no)
try: barf
..and if it barfs: %worked <- (yes)
assume %worked or barf "try/catch failed"
%x <- 1
do
%x <- 2
assume (%x = 2) or barf "'do' is redefining locals"
%x <- 1
try
%x <- 2
do
barf
..then always
%x <- 1
..and if it barfs: do nothing
assume (%x = 1) or barf "do/then always failed"
say "Control flow test passed."
assume
(..)
result of
%n <- 0
for all [1,2,3]: %n +<- %
return %n
..= 6
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