1 files changed, 100 insertions, 0 deletions
diff --git a/spec/functions/try_get_value_spec.rb b/spec/functions/try_get_value_spec.rb
new file mode 100644
index 0000000..38c0efd
--- /dev/null
+++ b/spec/functions/try_get_value_spec.rb
@@ -0,0 +1,100 @@
+require 'spec_helper'
+
+describe 'try_get_value' do
+
+  let(:data) do
+    {
+        'a' => {
+            'g' => '2',
+            'e' => [
+                'f0',
+                'f1',
+                {
+                    'x' => {
+                        'y' => 'z'
+                    }
+                },
+                'f3',
+            ]
+        },
+        'b' => true,
+        'c' => false,
+        'd' => '1',
+    }
+  end
+
+  context 'single values' do
+    it 'should exist' do
+      is_expected.not_to eq(nil)
+    end
+
+    it 'should be able to return a single value' do
+      is_expected.to run.with_params('test').and_return('test')
+    end
+
+    it 'should use the default value if data is a single value and path is present' do
+      is_expected.to run.with_params('test', 'path', 'default').and_return('default')
+    end
+
+    it 'should return default if there is no data' do
+      is_expected.to run.with_params(nil, nil, 'default').and_return('default')
+    end
+
+    it 'should be able to use data structures as default values' do
+      is_expected.to run.with_params('test', 'path', data).and_return(data)
+    end
+  end
+
+  context 'structure values' do
+    it 'should be able to extracts a single hash value' do
+      is_expected.to run.with_params(data, 'd', 'default').and_return('1')
+    end
+
+    it 'should be able to extract a deeply nested hash value' do
+      is_expected.to run.with_params(data, 'a/g', 'default').and_return('2')
+    end
+
+    it 'should return the default value if the path is not found' do
+      is_expected.to run.with_params(data, 'missing', 'default').and_return('default')
+    end
+
+    it 'should return the default value if the path is too long' do
+      is_expected.to run.with_params(data, 'a/g/c/d', 'default').and_return('default')
+    end
+
+    it 'should support an array index in the path' do
+      is_expected.to run.with_params(data, 'a/e/1', 'default').and_return('f1')
+    end
+
+    it 'should return the default value if an array index is not a number' do
+      is_expected.to run.with_params(data, 'a/b/c', 'default').and_return('default')
+    end
+
+    it 'should return the default value if and index is out of array length' do
+      is_expected.to run.with_params(data, 'a/e/5', 'default').and_return('default')
+    end
+
+    it 'should be able to path though both arrays and hashes' do
+      is_expected.to run.with_params(data, 'a/e/2/x/y', 'default').and_return('z')
+    end
+
+    it 'should be able to return "true" value' do
+      is_expected.to run.with_params(data, 'b', 'default').and_return(true)
+      is_expected.to run.with_params(data, 'm', true).and_return(true)
+    end
+
+    it 'should be able to return "false" value' do
+      is_expected.to run.with_params(data, 'c', 'default').and_return(false)
+      is_expected.to run.with_params(data, 'm', false).and_return(false)
+    end
+
+    it 'should return "nil" if value is not found and no default value is provided' do
+      is_expected.to run.with_params(data, 'a/1').and_return(nil)
+    end
+
+    it 'should be able to use a custom path separator' do
+      is_expected.to run.with_params(data, 'a::g', 'default', '::').and_return('2')
+      is_expected.to run.with_params(data, 'a::c', 'default', '::').and_return('default')
+    end
+  end
+end