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|
# frozen_string_literal: true
# rubocop:todo all
require 'spec_helper'
require 'json'
describe BSON::DBRef do
let(:object_id) do
BSON::ObjectId.new
end
describe '#as_json' do
context 'when the database is not provided' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id })
end
it 'returns the json document without database' do
expect(dbref.as_json).to eq({ '$ref' => 'users', '$id' => object_id })
end
end
context 'when the database is provided' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id, '$db' => 'database' })
end
it 'returns the json document with database' do
expect(dbref.as_json).to eq({
'$ref' => 'users',
'$id' => object_id,
'$db' => 'database'
})
end
end
context 'when other keys are provided' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id, '$db' => 'database', 'x' => 'y' })
end
it 'returns the json document with the other keys' do
expect(dbref.as_json).to eq({
'$ref' => 'users',
'$id' => object_id,
'$db' => 'database',
'x' => 'y'
})
end
end
end
describe '#initialize' do
let(:dbref) do
described_class.new(hash)
end
let(:hash) do
{ '$ref' => 'users', '$id' => object_id }
end
it 'sets the collection' do
expect(dbref.collection).to eq('users')
end
it 'sets the id' do
expect(dbref.id).to eq(object_id)
end
context 'when first argument is a hash and two arguments are provided' do
let(:dbref) do
described_class.new({:$ref => 'users', :$id => object_id}, object_id)
end
it 'raises InvalidDBRefArgument' do
lambda do
dbref
end.should raise_error(BSON::Error::InvalidDBRefArgument)
end
end
context 'when first argument is a hash and three arguments are provided' do
let(:dbref) do
described_class.new({:$ref => 'users', :$id => object_id}, object_id, 'db')
end
it 'raises InvalidDBRefArgument' do
lambda do
dbref
end.should raise_error(BSON::Error::InvalidDBRefArgument)
end
end
context 'when a database is provided' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, '$db' => 'db' }
end
it 'sets the database' do
expect(dbref.database).to eq('db')
end
end
context 'when not providing a collection' do
let(:hash) do
{ '$id' => object_id, '$db' => 'db' }
end
it 'raises an error' do
expect do
dbref
end.to raise_error(BSON::Error::InvalidDBRefArgument, /DBRef must have \$ref/)
end
end
context 'when not providing an id' do
let(:hash) do
{ '$ref' => 'users', '$db' => 'db' }
end
it 'raises an error' do
expect do
dbref
end.to raise_error(BSON::Error::InvalidDBRefArgument, /DBRef must have \$id/)
end
end
context 'when providing an invalid type for ref' do
let(:hash) do
{ '$ref' => 1, '$id' => object_id }
end
it 'raises an error' do
expect do
dbref
end.to raise_error(BSON::Error::InvalidDBRefArgument, /The value for key \$ref must be a string/)
end
end
context 'when providing an invalid type for database' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, '$db' => 1 }
end
it 'raises an error' do
expect do
dbref
end.to raise_error(BSON::Error::InvalidDBRefArgument, /The value for key \$db must be a string/)
end
end
context 'when providing the fieds as symbols' do
let(:hash) do
{ :$ref => 'users', :$id => object_id, :$db => 'db' }
end
it 'does not raise an error' do
expect do
dbref
end.to_not raise_error
end
end
context 'when testing the ordering of the fields' do
context 'when the fields are in order' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, '$db' => 'db' }
end
it 'has the correct order' do
expect(dbref.keys).to eq(['$ref', '$id', '$db'])
end
end
context 'when the fields are out of order' do
let(:hash) do
{ '$db' => 'db', '$id' => object_id, '$ref' => 'users' }
end
it 'has the correct order' do
expect(dbref.keys).to eq(['$ref', '$id', '$db'])
end
end
context 'when there is no db' do
let(:hash) do
{ '$id' => object_id, '$ref' => 'users' }
end
it 'has the correct order' do
expect(dbref.keys).to eq(['$ref', '$id'])
end
end
context 'when the there are other fields in order' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, '$db' => 'db', 'x' => 'y', 'y' => 'z' }
end
it 'has the correct order' do
expect(dbref.keys).to eq(['$ref', '$id', '$db', 'x', 'y'])
end
end
context 'when the there are other fields out of order' do
let(:hash) do
{ 'y' => 'z', '$db' => 'db', '$id' => object_id, 'x' => 'y', '$ref' => 'users' }
end
it 'has the correct order' do
expect(dbref.keys).to eq(['$ref', '$id', '$db', 'y', 'x'])
end
end
end
end
describe '#to_bson' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id, '$db' => 'database' })
end
it 'converts the underlying document to bson' do
expect(dbref.to_bson.to_s).to eq(dbref.as_json.to_bson.to_s)
end
end
describe '#to_json' do
context 'when the database is not provided' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id })
end
it 'returns the json document without database' do
expect(dbref.to_json).to eq("{\"$ref\":\"users\",\"$id\":#{object_id.to_json}}")
end
end
context 'when the database is provided' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id, '$db' => 'database' })
end
it 'returns the json document with database' do
expect(dbref.to_json).to eq("{\"$ref\":\"users\",\"$id\":#{object_id.to_json},\"$db\":\"database\"}")
end
end
context 'when other keys are provided' do
let(:dbref) do
described_class.new({ '$ref' => 'users', '$id' => object_id, '$db' => 'database', 'x' => 'y' })
end
it 'returns the json document with the other keys' do
expect(dbref.to_json).to eq("{\"$ref\":\"users\",\"$id\":#{object_id.to_json},\"$db\":\"database\",\"x\":\"y\"}")
end
end
end
describe '#from_bson' do
let(:buffer) do
hash.to_bson
end
let(:decoded) do
BSON::Document.from_bson(BSON::ByteBuffer.new(buffer.to_s))
end
context 'when a database exists' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, '$db' => 'database' }
end
it 'decodes the ref' do
expect(decoded.collection).to eq('users')
end
it 'decodes the id' do
expect(decoded.id).to eq(object_id)
end
it 'decodes the database' do
expect(decoded.database).to eq('database')
end
it 'is of class DBRef' do
expect(decoded).to be_a described_class
end
end
context 'when no database exists' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id }
end
it 'decodes the ref' do
expect(decoded.collection).to eq('users')
end
it 'decodes the id' do
expect(decoded.id).to eq(object_id)
end
it 'sets the database to nil' do
expect(decoded.database).to be_nil
end
it 'is of class DBRef' do
expect(decoded).to be_a described_class
end
end
context 'when other keys exist' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, 'x' => 'y' }
end
it 'decodes the key' do
expect(decoded['x']).to eq('y')
end
it 'is of class DBRef' do
expect(decoded).to be_a described_class
end
end
context 'when it is an invalid dbref' do
shared_examples 'bson document' do
it 'should not raise' do
expect do
decoded
end.to_not raise_error
end
it 'has the correct class' do
expect(decoded).to be_a BSON::Document
expect(decoded).to_not be_a described_class
end
end
context 'when the hash has invalid collection type' do
let(:hash) do
{ '$ref' => 1, '$id' => object_id }
end
include_examples 'bson document'
end
context 'when the hash has an invalid database type' do
let(:hash) do
{ '$ref' => 'users', '$id' => object_id, '$db' => 1 }
end
include_examples 'bson document'
end
context 'when the hash is missing a collection' do
let(:hash) do
{ '$id' => object_id }
end
include_examples 'bson document'
end
context 'when the hash is missing an id' do
let(:hash) do
{ '$ref' => 'users' }
end
include_examples 'bson document'
end
end
context 'when nesting the dbref' do
context 'when it is a valid dbref' do
let(:hash) do
{ 'dbref' => { '$ref' => 'users', '$id' => object_id } }
end
it 'should not raise' do
expect do
buffer
end.to_not raise_error
end
it 'has the correct class' do
expect(decoded['dbref']).to be_a described_class
end
end
context 'when it is an invalid dbref' do
shared_examples 'nested bson document' do
it 'should not raise' do
expect do
decoded
end.to_not raise_error
end
it 'has the correct class' do
expect(decoded['dbref']).to be_a BSON::Document
expect(decoded['dbref']).to_not be_a described_class
end
end
context 'when the hash has invalid collection type' do
let(:hash) do
{ 'dbref' => { '$ref' => 1, '$id' => object_id } }
end
include_examples 'nested bson document'
end
context 'when the hash has an invalid database type' do
let(:hash) do
{ 'dbref' => { '$ref' => 'users', '$id' => object_id, '$db' => 1 } }
end
include_examples 'nested bson document'
end
context 'when the hash is missing a collection' do
let(:hash) do
{ 'dbref' => { '$id' => object_id } }
end
include_examples 'nested bson document'
end
context 'when the hash is missing an id' do
let(:hash) do
{ 'dbref' => { '$ref' => 'users' } }
end
include_examples 'nested bson document'
end
end
end
context 'when nesting a dbref inside a dbref' do
context 'when it is a valid dbref' do
let(:hash) do
{ 'dbref1' => { '$ref' => 'users', '$id' => object_id, 'dbref2' => { '$ref' => 'users', '$id' => object_id } } }
end
it 'should not raise' do
expect do
buffer
end.to_not raise_error
end
it 'has the correct class' do
expect(decoded['dbref1']).to be_a described_class
expect(decoded['dbref1']['dbref2']).to be_a described_class
end
end
context 'when it is an invalid dbref' do
let(:hash) do
{ 'dbref' => { '$ref' => 'users', '$id' => object_id, 'dbref' => { '$ref' => 1, '$id' => object_id } } }
end
it 'should not raise' do
expect do
decoded
end.to_not raise_error
end
it 'has the correct class' do
expect(decoded['dbref']).to be_a described_class
expect(decoded['dbref']['dbref']).to be_a BSON::Document
end
end
end
end
end
|
