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conditionals with no alternative now evaluate to 'undefined' instead of 'null'

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This commit is contained in:
Jeremy Ashkenas
2010-10-01 20:52:23 -04:00
parent 4fd878447e
commit 26de26f88f
10 changed files with 32 additions and 31 deletions
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14
test/test_existence.coffee
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@@ -44,7 +44,7 @@ eq obj?.prop, "hello"
eq obj?['prop'], "hello"
eq obj.prop?.length, 5
eq obj?.prop?['length'], 5
eq obj?.prop?.non?.existent?.property, null
eq obj?.prop?.non?.existent?.property, undefined
# Soaks and caches method calls as well.
@@ -52,13 +52,13 @@ arr = ["--", "----"]
eq arr.pop()?.length, 4
eq arr.pop()?.length, 2
eq arr.pop()?.length, null
eq arr.pop()?.length?.non?.existent()?.property, null
eq arr.pop()?.length, undefined
eq arr.pop()?.length?.non?.existent()?.property, undefined
# Soaks method calls safely.
value = null
eq value?.toString().toLowerCase(), null
eq value?.toString().toLowerCase(), undefined
value = 10
eq value?.toString().toLowerCase(), '10'
@@ -78,7 +78,7 @@ ok counter is 3
ident = (obj) -> obj
eq ident(non?.existent().method()), null, 'soaks inner values'
eq ident(non?.existent().method()), undefined, 'soaks inner values'
# Soaks constructor invocations.
@@ -94,7 +94,7 @@ ok a is 1
ok not value?.property?, 'safely checks existence on soaks'
eq nothing?.value, null, 'safely calls values off of non-existent variables'
eq nothing?.value, undefined, 'safely calls values off of non-existent variables'
# Assign to the result of an exsitential operation with a minus.
@@ -132,7 +132,7 @@ ok (maybe_close 'string', 41)?() is undefined
eq 2?(3), undefined
#726
eq calendar?[Date()], null
eq calendar?[Date()], undefined
#733
a = b: {c: null}