184 lines
5 KiB
Ruby
184 lines
5 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require 'spec_helper'
|
|
|
|
describe WhereComposite do
|
|
describe '.where_composite' do
|
|
let_it_be(:test_table_name) { "test_table_#{SecureRandom.hex(10)}" }
|
|
|
|
let(:model) do
|
|
tbl_name = test_table_name
|
|
Class.new(ActiveRecord::Base) do
|
|
self.table_name = tbl_name
|
|
|
|
include WhereComposite
|
|
end
|
|
end
|
|
|
|
def connection
|
|
ActiveRecord::Base.connection
|
|
end
|
|
|
|
before_all do
|
|
connection.create_table(test_table_name) do |t|
|
|
t.integer :foo
|
|
t.integer :bar
|
|
t.string :wibble
|
|
end
|
|
end
|
|
|
|
it 'requires at least one permitted key' do
|
|
expect { model.where_composite([], nil) }
|
|
.to raise_error(ArgumentError)
|
|
end
|
|
|
|
it 'requires all arguments to match the permitted_keys' do
|
|
expect { model.where_composite([:foo], [{ foo: 1 }, { bar: 2 }]) }
|
|
.to raise_error(ArgumentError)
|
|
end
|
|
|
|
it 'attaches a key error as cause if a key is missing' do
|
|
expect { model.where_composite([:foo], [{ foo: 1 }, { bar: 2 }]) }
|
|
.to raise_error(have_attributes(cause: KeyError))
|
|
end
|
|
|
|
it 'returns an empty relation if there are no arguments' do
|
|
expect(model.where_composite([:foo, :bar], nil))
|
|
.to be_empty
|
|
|
|
expect(model.where_composite([:foo, :bar], []))
|
|
.to be_empty
|
|
end
|
|
|
|
it 'permits extra arguments' do
|
|
a = model.where_composite([:foo, :bar], { foo: 1, bar: 2 })
|
|
b = model.where_composite([:foo, :bar], { foo: 1, bar: 2, baz: 3 })
|
|
|
|
expect(a.to_sql).to eq(b.to_sql)
|
|
end
|
|
|
|
it 'can handle multiple fields' do
|
|
fields = [:foo, :bar, :wibble]
|
|
args = { foo: 1, bar: 2, wibble: 'wobble' }
|
|
pattern = %r{
|
|
WHERE \s+
|
|
\(?
|
|
\s* "#{test_table_name}"\."foo" \s* = \s* 1
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 2
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."wibble" \s* = \s* 'wobble'
|
|
\s*
|
|
\)?
|
|
}x
|
|
|
|
expect(model.where_composite(fields, args).to_sql).to match(pattern)
|
|
end
|
|
|
|
it 'is equivalent to ids.map { |attrs| model.find_by(attrs) }' do
|
|
10.times do |i|
|
|
10.times do |j|
|
|
model.create!(foo: i, bar: j, wibble: generate(:filename))
|
|
end
|
|
end
|
|
|
|
ids = [{ foo: 1, bar: 9 }, { foo: 9, bar: 1 }]
|
|
|
|
found = model.where_composite(%i[foo bar], ids)
|
|
|
|
expect(found).to match_array(ids.map { |attrs| model.find_by!(attrs) })
|
|
end
|
|
|
|
it 'constructs (A&B) for one argument' do
|
|
fields = [:foo, :bar]
|
|
args = [
|
|
{ foo: 1, bar: 2 }
|
|
]
|
|
pattern = %r{
|
|
WHERE \s+
|
|
\(?
|
|
\s* "#{test_table_name}"\."foo" \s* = \s* 1
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 2
|
|
\s*
|
|
\)?
|
|
}x
|
|
|
|
expect(model.where_composite(fields, args).to_sql).to match(pattern)
|
|
expect(model.where_composite(fields, args[0]).to_sql).to match(pattern)
|
|
end
|
|
|
|
it 'constructs (A&B) OR (C&D) for two arguments' do
|
|
args = [
|
|
{ foo: 1, bar: 2 },
|
|
{ foo: 3, bar: 4 }
|
|
]
|
|
pattern = %r{
|
|
WHERE \s+
|
|
\( \s* "#{test_table_name}"\."foo" \s* = \s* 1
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 2
|
|
\s* \)?
|
|
\s* OR \s*
|
|
\(? \s* "#{test_table_name}"\."foo" \s* = \s* 3
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 4
|
|
\s* \)
|
|
}x
|
|
|
|
q = model.where_composite([:foo, :bar], args)
|
|
|
|
expect(q.to_sql).to match(pattern)
|
|
end
|
|
|
|
it 'constructs (A&B) OR (C&D) OR (E&F) for three arguments' do
|
|
args = [
|
|
{ foo: 1, bar: 2 },
|
|
{ foo: 3, bar: 4 },
|
|
{ foo: 5, bar: 6 }
|
|
]
|
|
pattern = %r{
|
|
WHERE \s+
|
|
\({2}
|
|
\s* "#{test_table_name}"\."foo" \s* = \s* 1
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 2
|
|
\s* \)?
|
|
\s* OR \s*
|
|
\(? \s* "#{test_table_name}"\."foo" \s* = \s* 3
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 4
|
|
\s* \)?
|
|
\s* OR \s*
|
|
\(? \s* "#{test_table_name}"\."foo" \s* = \s* 5
|
|
\s+ AND
|
|
\s+ "#{test_table_name}"\."bar" \s* = \s* 6
|
|
\s* \)
|
|
}x
|
|
|
|
q = model.where_composite([:foo, :bar], args)
|
|
|
|
expect(q.to_sql).to match(pattern)
|
|
end
|
|
|
|
describe 'large sets of IDs' do
|
|
def query(size)
|
|
args = (0..).lazy.take(size).map { |n| { foo: n, bar: n * n, wibble: 'x' * n } }.to_a
|
|
model.where_composite([:foo, :bar, :wibble], args)
|
|
end
|
|
|
|
it 'constructs correct trees of constraints' do
|
|
n = described_class::TooManyIds::LIMIT
|
|
q = query(n)
|
|
sql = q.to_sql
|
|
|
|
expect(sql.scan(/OR/).count).to eq(n - 1)
|
|
expect(sql.scan(/AND/).count).to eq(2 * n)
|
|
end
|
|
|
|
it 'raises errors if too many IDs are passed' do
|
|
expect { query(described_class::TooManyIds::LIMIT + 1) }.to raise_error(described_class::TooManyIds)
|
|
end
|
|
end
|
|
end
|
|
end
|