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add spec for transactions and nested transactions (#12)

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Brian J. Cardiff 2016-12-14 12:27:43 -03:00 • committed by GitHub
parent c39220e3f0
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53
spec/driver_spec.cr
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@ -242,4 +242,57 @@ describe Driver do
File.delete(DB_FILENAME)
end
end
describe "transactions" do
it "can read inside transaction and rollback after" do
with_db do |db|
db.exec "create table person (name varchar(25))"
db.transaction do |tx|
tx.connection.scalar("select count(*) from person").should eq(0)
tx.connection.exec "insert into person (name) values (?)", "John Doe"
tx.connection.scalar("select count(*) from person").should eq(1)
tx.rollback
end
db.scalar("select count(*) from person").should eq(0)
end
end
it "can read inside transaction or after commit" do
with_db do |db|
db.exec "create table person (name varchar(25))"
db.transaction do |tx|
tx.connection.scalar("select count(*) from person").should eq(0)
tx.connection.exec "insert into person (name) values (?)", "John Doe"
tx.connection.scalar("select count(*) from person").should eq(1)
# using other connection
db.scalar("select count(*) from person").should eq(0)
end
db.scalar("select count(*) from person").should eq(1)
end
end
end
describe "nested transactions" do
it "can read inside transaction and rollback after" do
with_db do |db|
db.exec "create table person (name varchar(25))"
db.transaction do |tx_0|
tx_0.connection.scalar("select count(*) from person").should eq(0)
tx_0.connection.exec "insert into person (name) values (?)", "John Doe"
tx_0.transaction do |tx_1|
tx_1.connection.exec "insert into person (name) values (?)", "Sarah"
tx_1.connection.scalar("select count(*) from person").should eq(2)
tx_1.transaction do |tx_2|
tx_2.connection.exec "insert into person (name) values (?)", "Jimmy"
tx_2.connection.scalar("select count(*) from person").should eq(3)
tx_2.rollback
end
end
tx_0.connection.scalar("select count(*) from person").should eq(2)
tx_0.rollback
end
db.scalar("select count(*) from person").should eq(0)
end
end
end
end