[MODULES-2462] Improve parseyaml function

* Add default value support
  Second argument will be returned if yaml cannot be parsed
  instead of false value
* Update tests

1 files changed, 66 insertions, 8 deletions

diff --git a/spec/functions/parseyaml_spec.rb b/spec/functions/parseyaml_spec.rb
index fb635f8..492a1c9 100755
--- a/spec/functions/parseyaml_spec.rb
+++ b/spec/functions/parseyaml_spec.rb
@@ -1,14 +1,72 @@
 require 'spec_helper'
 
 describe 'parseyaml' do
-  it { is_expected.not_to eq(nil) }
-  it { is_expected.to run.with_params().and_raise_error(Puppet::ParseError, /wrong number of arguments/i) }
-  it { is_expected.to run.with_params('', '').and_raise_error(Puppet::ParseError, /wrong number of arguments/i) }
-  it { is_expected.to run.with_params('["one", "two", "three"]').and_return(['one', 'two', 'three']) }
-  context 'when running on modern rubies', :unless => RUBY_VERSION == '1.8.7' do
-    it { is_expected.to run.with_params('["one"').and_raise_error(Psych::SyntaxError) }
+  it 'should exist' do
+    is_expected.not_to eq(nil)
   end
-  context 'when running on ruby 1.8.7, which does not have Psych', :if => RUBY_VERSION == '1.8.7' do
-    it { is_expected.to run.with_params('["one"').and_raise_error(ArgumentError) }
+
+  it 'should raise an error if called without any arguments' do
+    is_expected.to run.with_params().
+                       and_raise_error(/wrong number of arguments/i)
+  end
+
+  context 'with correct YAML data' do
+    it 'should be able to parse a YAML data with a String' do
+      is_expected.to run.with_params('--- just a string').
+                         and_return('just a string')
+      is_expected.to run.with_params('just a string').
+                         and_return('just a string')
+    end
+
+    it 'should be able to parse a YAML data with a Hash' do
+      is_expected.to run.with_params("---\na: '1'\nb: '2'\n").
+                         and_return({'a' => '1', 'b' => '2'})
+    end
+
+    it 'should be able to parse a YAML data with an Array' do
+      is_expected.to run.with_params("---\n- a\n- b\n- c\n").
+                         and_return(['a', 'b', 'c'])
+    end
+
+    it 'should be able to parse a YAML data with a mixed structure' do
+      is_expected.to run.with_params("---\na: '1'\nb: 2\nc:\n  d:\n  - :a\n  - true\n  - false\n").
+                         and_return({'a' => '1', 'b' => 2, 'c' => {'d' => [:a, true, false]}})
+    end
+
+    it 'should not return the default value if the data was parsed correctly' do
+      is_expected.to run.with_params("---\na: '1'\n", 'default_value').
+                         and_return({'a' => '1'})
+    end
+
   end
+
+  context 'with incorrect YAML data' do
+    it 'should return "nil" if a default value should be returned but is not provided' do
+      is_expected.to run.with_params('').
+                         and_return(nil)
+    end
+
+    it 'should support a structure for a default value' do
+      is_expected.to run.with_params('', {'a' => '1'}).
+                         and_return({'a' => '1'})
+    end
+
+    [1, 1.2, nil, true, false, [], {}, :yaml].each do |value|
+      it "should return the default value for an incorrect #{value.inspect} (#{value.class}) parameter" do
+        is_expected.to run.with_params(value, 'default_value').
+                           and_return('default_value')
+      end
+    end
+
+    context 'when running on modern rubies', :unless => RUBY_VERSION == '1.8.7' do
+      ['---', '...', '*8', ''].each do |value|
+        it "should return the default value for an incorrect #{value.inspect} string parameter" do
+          is_expected.to run.with_params(value, 'default_value').
+                             and_return('default_value')
+        end
+      end
+    end
+
+  end
+
 end