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authorDan Bode <dan@puppetlabs.com>2011-07-29 15:28:21 -0700
committerDan Bode <dan@puppetlabs.com>2011-07-29 15:28:21 -0700
commitc4a13acafeee87359d1fd72abeccdab7b9d5fee1 (patch)
tree99d67fcb0a3d1fe02a4c20c715b42b44dc62aea4 /spec/unit/puppet
parentb1beaec2da36aa2312f959b1521137f5df96608f (diff)
downloadpuppet-stdlib-c4a13acafeee87359d1fd72abeccdab7b9d5fee1.tar.gz
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(#8709) Add hash merging function
In Puppet, it is not possible to reassign hash values. This function allows a reasonable way to perform hash munging in Puppet. Reviewed-by: Jeff McCune
Diffstat (limited to 'spec/unit/puppet')
-rw-r--r--spec/unit/puppet/parser/functions/merge_spec.rb54
1 files changed, 54 insertions, 0 deletions
diff --git a/spec/unit/puppet/parser/functions/merge_spec.rb b/spec/unit/puppet/parser/functions/merge_spec.rb
new file mode 100644
index 0000000..71e1869
--- /dev/null
+++ b/spec/unit/puppet/parser/functions/merge_spec.rb
@@ -0,0 +1,54 @@
+require 'puppet'
+require 'mocha'
+describe Puppet::Parser::Functions.function(:merge) do
+
+ # Pulled from Dan's create_resources function
+ # TODO - these let statements should be moved somewhere
+ # where they can be resued
+ let(:compiler) {
+ topscope = Puppet::Parser::Scope.new
+ # This is necessary so we don't try to use the compiler to discover our parent.
+ topscope.parent = nil
+ my_scope = Puppet::Parser::Scope.new
+ my_scope.compiler = Puppet::Parser::Compiler.new(Puppet::Node.new("floppy", :environment => 'production'))
+ my_scope.parent = topscope
+ compiler = my_scope.compiler
+ }
+ let(:scope) {
+ scope = Puppet::Parser::Scope.new
+ scope.stubs(:environment).returns(Puppet::Node::Environment.new('production'))
+ scope
+ }
+
+ describe 'when calling merge from puppet' do
+ it "should not compile when no arguments are passed" do
+ Puppet[:code] = 'merge()'
+ expect { compiler.compile }.should raise_error(Puppet::ParseError, /wrong number of arguments/)
+ end
+ it "should not compile when 1 argument is passed" do
+ Puppet[:code] = "$my_hash={'one' => 1}\nmerge($my_hash)"
+ expect { compiler.compile }.should raise_error(Puppet::ParseError, /wrong number of arguments/)
+ end
+ end
+ describe 'when calling merge on the scope instance' do
+ it 'should require all parameters are hashes' do
+ expect { new_hash = scope.function_merge([{}, '2'])}.should raise_error(Puppet::ParseError, /unexpected argument type String/)
+
+ end
+ it 'should be able to merge two hashes' do
+ new_hash = scope.function_merge([{'one' => '1', 'two' => '1'}, {'two' => '2', 'three' => '2'}])
+ new_hash['one'].should == '1'
+ new_hash['two'].should == '2'
+ new_hash['three'].should == '2'
+ end
+ it 'should merge multiple hashes' do
+ hash = scope.function_merge([{'one' => 1}, {'one' => '2'}, {'one' => '3'}])
+ hash['one'].should == '3'
+ end
+ it 'should accept empty hashes' do
+ scope.function_merge([{},{},{}]).should == {}
+ end
+
+ end
+
+end