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Contents
RSpec.describe ROM::Relation, '#select' do
subject(:relation) { container.relations.tasks }
include_context 'users and tasks'
before do
conf.relation(:tasks) { schema(infer: true) }
end
with_adapters do
it 'projects a relation using a list of symbols' do
expect(relation.select(:id, :title).to_a)
.to eql([{ id: 1, title: "Joe's task" }, { id: 2, title: "Jane's task"}])
end
it 'projects a relation using a schema' do
expect(relation.select(*relation.schema.project(:id, :title)).to_a)
.to eql([{ id: 1, title: "Joe's task" }, { id: 2, title: "Jane's task"}])
end
it 'maintains schema' do
expect(relation.select(:id, :title).schema.map(&:name)).to eql(%i[id title])
end
it 'supports args and blocks' do
expect(relation.select(:id) { [title] }.schema.map(&:name)).to eql(%i[id title])
end
it 'supports blocks' do
expect(relation.select { [id, title] }.schema.map(&:name)).to eql(%i[id title])
end
it 'supports selecting literal strings' do
new_rel = relation.select { `'event'`.as(:type) }
expect(new_rel.schema[:type].primitive).to be(String)
expect(new_rel.first).to eql(type: 'event')
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems