1 files changed, 58 insertions, 0 deletions
diff --git a/code/environments/production/modules/stdlib/spec/functions/deep_merge_spec.rb b/code/environments/production/modules/stdlib/spec/functions/deep_merge_spec.rb
new file mode 100644
index 0000000..d09bde0
--- /dev/null
+++ b/code/environments/production/modules/stdlib/spec/functions/deep_merge_spec.rb
@@ -0,0 +1,58 @@
+require 'spec_helper'
+
+describe 'deep_merge' do
+  it { is_expected.to run.with_params.and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
+  it { is_expected.to run.with_params('key' => 'value').and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
+  it { is_expected.to run.with_params({}, '2').and_raise_error(Puppet::ParseError, %r{unexpected argument type String}) }
+  it { is_expected.to run.with_params({}, 2).and_raise_error(Puppet::ParseError, %r{unexpected argument}) }
+  it { is_expected.to run.with_params({}, '').and_return({}) }
+  it { is_expected.to run.with_params({}, {}).and_return({}) }
+  it { is_expected.to run.with_params({}, {}, {}).and_return({}) }
+  it { is_expected.to run.with_params({}, {}, {}, {}).and_return({}) }
+  it { is_expected.to run.with_params({ 'key' => 'value' }, '').and_return('key' => 'value') }
+  it { is_expected.to run.with_params({ 'key1' => 'value1' }, 'key2' => 'value2').and_return('key1' => 'value1', 'key2' => 'value2') }
+
+  describe 'when arguments have key collisions' do
+    it 'prefers values from the last hash' do
+      is_expected.to run \
+        .with_params({ 'key1' => 'value1', 'key2' => 'value2' }, 'key2' => 'replacement_value', 'key3' => 'value3') \
+        .and_return('key1' => 'value1', 'key2' => 'replacement_value', 'key3' => 'value3')
+    end
+    it {
+      is_expected.to run \
+        .with_params({ 'key1' => 'value1' }, { 'key1' => 'value2' }, 'key1' => 'value3') \
+        .and_return('key1' => 'value3')
+    }
+  end
+
+  describe 'when arguments have subhashes' do
+    it {
+      is_expected.to run \
+        .with_params({ 'key1' => 'value1' }, 'key2' => 'value2', 'key3' => { 'subkey1' => 'value4' }) \
+        .and_return('key1' => 'value1', 'key2' => 'value2', 'key3' => { 'subkey1' => 'value4' })
+    }
+    it {
+      is_expected.to run \
+        .with_params({ 'key1' => { 'subkey1' => 'value1' } }, 'key1' => { 'subkey2' => 'value2' }) \
+        .and_return('key1' => { 'subkey1' => 'value1', 'subkey2' => 'value2' })
+    }
+    it {
+      is_expected.to run \
+        .with_params({ 'key1' => { 'subkey1' => { 'subsubkey1' => 'value1' } } }, 'key1' => { 'subkey1' => { 'subsubkey1' => 'value2' } }) \
+        .and_return('key1' => { 'subkey1' => { 'subsubkey1' => 'value2' } })
+    }
+  end
+
+  arguments = { 'key1' => 'value1' }, { 'key2' => 'value2' }
+  originals = [arguments[0].dup, arguments[1].dup]
+  it 'does not change the original hashes' do
+    subject.call([arguments[0], arguments[1]])
+    arguments.each_with_index do |argument, index|
+      expect(argument).to eq(originals[index])
+    end
+  end
+
+  context 'with UTF8 and double byte characters' do
+    it { is_expected.to run.with_params({ 'ĸέỹ1' => 'ϋǻļủë1' }, 'この文字列' => '万').and_return('ĸέỹ1' => 'ϋǻļủë1', 'この文字列' => '万') }
+  end
+end