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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
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