shard-crystal-db/spec/db_spec.cr

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require "./spec_helper"
private def connections
DummyDriver::DummyConnection.connections
end
describe DB do
it "should get driver class by name" do
DB.driver_class("dummy").should eq(DummyDriver)
end
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it "should instantiate driver with connection uri" do
db = DB.open "dummy://localhost:1027"
db.driver.should be_a(DummyDriver)
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db.uri.scheme.should eq("dummy")
db.uri.host.should eq("localhost")
db.uri.port.should eq(1027)
end
it "should create a connection and close it" do
DummyDriver::DummyConnection.clear_connections
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DB.open "dummy://localhost" do |db|
end
connections.size.should eq(1)
connections.first.closed?.should be_true
end
it "query should close result_set" do
with_witness do |w|
with_dummy do |db|
db.query "1,2" do
break
end
w.check
DummyDriver::DummyResultSet.last_result_set.closed?.should be_true
end
end
end
it "scalar should close statement" do
with_dummy do |db|
db.scalar "1"
DummyDriver::DummyResultSet.last_result_set.closed?.should be_true
end
end
it "initially a single connection should be created" do
with_dummy do |db|
connections.size.should eq(1)
end
end
it "the connection should be closed after db usage" do
with_dummy do |db|
connections.first.closed?.should be_false
end
connections.first.closed?.should be_true
end
it "should raise if the sole connection is been used" do
with_dummy do |db|
db.query "1" do |rs|
expect_raises DB::PoolTimeout do
db.scalar "2"
end
end
end
end
it "exec should return to pool" do
with_dummy do |db|
db.exec "foo"
db.exec "bar"
end
end
it "scalar should return to pool" do
with_dummy do |db|
db.scalar "foo"
db.scalar "bar"
end
end
it "gives nice error message when no driver is registered for schema (#21)" do
expect_raises(ArgumentError, %(no driver was registered for the schema "foobar", did you maybe forget to require the database driver?)) do
DB.open "foobar://baz"
end
end
end