Issue #8778 has been updated by Jeff McCune.
Nigel Kersten wrote:
> Can we get a tighter scope on this? Is it just undef, or all symbols?
It appears to only affect undef.
Here's my test manifest:
<pre>
notify { 'one': }
notify { 'two': }
$notify_one = Notify[one]
$notify_two = Notify[two]
if undef == undef {
notice("undef == undef")
}
if undef == '' {
notice("undef == ''")
}
if '' == undef {
notice("'' == undef")
}
if $notify_one == $notify_two {
notice('$notify_one == $notify_two')
}
if $notify_one != $notify_two {
notice('$notify_one != $notify_two')
}
if $notify_two == $notify_one {
notice('$notify_two == $notify_one')
}
if $notify_two != $notify_one {
notice('$notify_two != $notify_one')
}
if true == false {
notice('true == false')
}
if false == true {
notice('false == true')
}
if true != false {
notice('true != false')
}
if false != true {
notice('false != true')
}
</pre>
And the expected output:
<pre>
notice: Scope(Class[main]): undef == undef
notice: Scope(Class[main]): undef == ''
notice: Scope(Class[main]): $notify_one != $notify_two
notice: Scope(Class[main]): $notify_two != $notify_one
notice: Scope(Class[main]): true != false
notice: Scope(Class[main]): false != true
notice: one
notice: /Stage[main]//Notify[one]/message: defined 'message' as 'one'
notice: two
notice: /Stage[main]//Notify[two]/message: defined 'message' as 'two'
notice: Finished catalog run in 0.02 seconds
</pre>
----------------------------------------
Bug #8778: Equality in Puppet is not commutative
https://projects.puppetlabs.com/issues/8778
Author: Jeff McCune
Status: Needs More Information
Priority: Normal
Assignee: Jeff McCune
Category: parser
Target version:
Affected Puppet version:
Keywords:
Branch:
# Overview #
The equality (`==`) test in Puppet is not commutative in combination with the
undef value.
All three notices should print OR only "undef == undef" should print. Two
notices should NOT print.
<pre>
if undef == undef {
notice("undef == undef")
}
if undef == '' {
notice("undef == ''")
}
if '' == undef {
notice("'' == undef")
}
</pre>
# Actual Behavior #
Notice that undef == '' but not '' == undef.
<pre>
notice: Scope(Class[main]): undef == undef
notice: Scope(Class[main]): undef == ''
notice: Finished catalog run in 0.02 seconds
</pre>
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