shard-crystal-sqlite3/spec/database_spec.cr

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2015-03-12 21:21:33 +00:00
require "./spec_helper"
DB_FILENAME = "./test.db"
private def with_db
yield Database.new DB_FILENAME
ensure
File.delete(DB_FILENAME)
end
describe Database do
it "opens a database" do
with_db do |db|
File.exists?(DB_FILENAME).should be_true
end
end
[nil, 1, 1_i64, "hello", 1.5, 1.5_f32].each do |value|
it "executes and select #{value}" do
with_db(&.execute("select #{value ? value.inspect : "null"}")).should eq([[value]])
end
it "executes with bind #{value}" do
with_db(&.execute(%(select ?), value)).should eq([[value]])
end
it "executes with bind #{value} as array" do
with_db(&.execute(%(select ?), [value])).should eq([[value]])
end
end
it "executes and selects blob" do
rows = with_db(&.execute(%(select X'53514C697465')))
row = rows[0]
cell = row[0] as Slice(UInt8)
cell.to_a.should eq([0x53, 0x51, 0x4C, 0x69, 0x74, 0x65])
end
it "executes with named bind using symbol" do
with_db(&.execute(%(select :value), {value: "hello"})).should eq([["hello"]])
end
it "executes with named bind using string" do
with_db(&.execute(%(select :value), {"value": "hello"})).should eq([["hello"]])
end
it "executes with bind blob" do
ary = UInt8[0x53, 0x51, 0x4C, 0x69, 0x74, 0x65]
rows = with_db(&.execute(%(select cast(? as BLOB)), Slice.new(ary.buffer, ary.length)))
row = rows[0]
cell = row[0] as Slice(UInt8)
cell.to_a.should eq(ary)
end
it "gets column names" do
Database.new(":memory:") do |db|
db.execute "create table person (name string, age integer)"
stmt = db.prepare("select * from person")
stmt.columns.should eq(%w(name age))
stmt.close
end
end
it "gets column by name" do
Database.new(":memory:") do |db|
db.execute "create table person (name string, age integer)"
db.execute %(insert into person values ("foo", 10))
db.query("select * from person") do |result_set|
result_set.next.should be_true
result_set["name"].should eq("foo")
result_set["age"].should eq(10)
expect_raises { result_set["lala"] }
end
end
end
it "gets last insert row id" do
Database.new(":memory:") do |db|
db.execute "create table person (name string, age integer)"
db.last_insert_row_id.should eq(0)
db.execute %(insert into person values ("foo", 10))
db.last_insert_row_id.should eq(1)
end
end
it "quotes" do
db = Database.new(":memory:")
db.quote("'hello'").should eq("''hello''")
end
it "gets first row" do
with_db(&.get_first_row(%(select 1))).should eq([1])
end
it "gets first value" do
with_db(&.get_first_value(%(select 1))).should eq(1)
end
end