shard-crystal-db/spec/dummy_driver_spec.cr
2020-04-06 18:36:37 -03:00

312 lines
7.8 KiB
Crystal

require "./spec_helper"
describe DummyDriver do
it "with_dummy executes the block with a database" do
with_witness do |w|
with_dummy do |db|
w.check
db.should be_a(DB::Database)
end
end
end
describe DummyDriver::DummyStatement do
it "should enumerate split rows by spaces" do
with_dummy do |db|
rs = db.query("")
rs.move_next.should be_false
rs.close
rs = db.query("a,b")
rs.move_next.should be_true
rs.move_next.should be_false
rs.close
rs = db.query("a,b 1,2")
rs.move_next.should be_true
rs.move_next.should be_true
rs.move_next.should be_false
rs.close
rs = db.query("a,b 1,2 c,d")
rs.move_next.should be_true
rs.move_next.should be_true
rs.move_next.should be_true
rs.move_next.should be_false
rs.close
end
end
# it "should query with block should executes always" do
# with_witness do |w|
# with_dummy do |db|
# db.query "a" do |rs|
# w.check
# end
# end
# end
# end
#
# it "should query with block should executes always" do
# with_witness do |w|
# with_dummy do |db|
# db.query "lorem ipsum" do |rs|
# w.check
# end
# end
# end
# end
it "should enumerate string fields" do
with_dummy do |db|
db.query "a,b 1,2" do |rs|
rs.move_next
rs.read(String).should eq("a")
rs.read(String).should eq("b")
rs.move_next
rs.read(String).should eq("1")
rs.read(String).should eq("2")
end
end
end
it "should enumerate nil fields" do
with_dummy do |db|
db.query "a,NULL 1,NULL" do |rs|
rs.move_next
rs.read(String).should eq("a")
rs.read(String | Nil).should be_nil
rs.move_next
rs.read(Int64).should eq(1)
rs.read(Int64 | Nil).should be_nil
end
end
end
it "should enumerate int64 fields" do
with_dummy do |db|
db.query "3,4 1,2" do |rs|
rs.move_next
rs.read(Int64).should eq(3i64)
rs.read(Int64).should eq(4i64)
rs.move_next
rs.read(Int64).should eq(1i64)
rs.read(Int64).should eq(2i64)
end
end
end
it "should enumerate nillable int64 fields" do
with_dummy do |db|
db.query "3,4 1,NULL" do |rs|
rs.move_next
rs.read(Int64 | Nil).should eq(3i64)
rs.read(Int64 | Nil).should eq(4i64)
rs.move_next
rs.read(Int64 | Nil).should eq(1i64)
rs.read(Int64 | Nil).should be_nil
end
end
end
describe "query one" do
it "queries" do
with_dummy do |db|
db.query_one("3,4", &.read(Int64, Int64)).should eq({3i64, 4i64})
end
end
it "raises if more than one row" do
with_dummy do |db|
expect_raises(DB::Error, "more than one row") do
db.query_one("3,4 5,6") { }
end
end
end
it "raises if no rows" do
with_dummy do |db|
expect_raises(DB::NoResultsError) do
db.query_one("") { }
end
end
end
it "with as" do
with_dummy do |db|
db.query_one("3,4", as: {Int64, Int64}).should eq({3i64, 4i64})
end
end
it "with a named tuple" do
with_dummy do |db|
db.query_one("3,4", as: {a: Int64, b: Int64}).should eq({a: 3i64, b: 4i64})
end
end
it "with as, just one" do
with_dummy do |db|
db.query_one("3", as: Int64).should eq(3i64)
end
end
end
describe "query one?" do
it "queries" do
with_dummy do |db|
value = db.query_one?("3,4", &.read(Int64, Int64))
value.should eq({3i64, 4i64})
value.should be_a(Tuple(Int64, Int64)?)
end
end
it "raises if more than one row" do
with_dummy do |db|
expect_raises(DB::Error, "more than one row") do
db.query_one?("3,4 5,6") { }
end
end
end
it "returns nil if no rows" do
with_dummy do |db|
db.query_one?("") { fail("block shouldn't be invoked") }.should be_nil
end
end
it "with as" do
with_dummy do |db|
value = db.query_one?("3,4", as: {Int64, Int64})
value.should be_a(Tuple(Int64, Int64)?)
value.should eq({3i64, 4i64})
end
end
it "with as" do
with_dummy do |db|
value = db.query_one?("3,4", as: {a: Int64, b: Int64})
value.should be_a(NamedTuple(a: Int64, b: Int64)?)
value.should eq({a: 3i64, b: 4i64})
end
end
it "with as, no rows" do
with_dummy do |db|
value = db.query_one?("", as: {a: Int64, b: Int64})
value.should be_nil
end
end
it "with as, just one" do
with_dummy do |db|
value = db.query_one?("3", as: Int64)
value.should be_a(Int64?)
value.should eq(3i64)
end
end
end
describe "query all" do
it "queries" do
with_dummy do |db|
ary = db.query_all "3,4 1,2", &.read(Int64, Int64)
ary.should eq([{3, 4}, {1, 2}])
end
end
it "queries with as" do
with_dummy do |db|
ary = db.query_all "3,4 1,2", as: {Int64, Int64}
ary.should eq([{3, 4}, {1, 2}])
end
end
it "queries with a named tuple" do
with_dummy do |db|
ary = db.query_all "3,4 1,2", as: {a: Int64, b: Int64}
ary.should eq([{a: 3, b: 4}, {a: 1, b: 2}])
end
end
it "queries with as, just one" do
with_dummy do |db|
ary = db.query_all "3 1", as: Int64
ary.should eq([3, 1])
end
end
end
describe "query each" do
it "queries" do
with_dummy do |db|
i = 0
db.query_each "3,4 1,2" do |rs|
case i
when 0
rs.read(Int64, Int64).should eq({3i64, 4i64})
when 1
rs.read(Int64, Int64).should eq({1i64, 2i64})
else
raise "unreachable"
end
i += 1
end
i.should eq(2)
end
end
end
it "reads multiple values" do
with_dummy do |db|
db.query "3,4 1,2" do |rs|
rs.move_next
rs.read(Int64, Int64).should eq({3i64, 4i64})
rs.move_next
rs.read(Int64, Int64).should eq({1i64, 2i64})
end
end
end
it "should enumerate blob fields" do
with_dummy do |db|
db.query("az,AZ") do |rs|
rs.move_next
ary = [97u8, 122u8]
rs.read(Bytes).should eq(Bytes.new(ary.to_unsafe, ary.size))
ary = [65u8, 90u8]
rs.read(Bytes).should eq(Bytes.new(ary.to_unsafe, ary.size))
end
end
end
it "should get Nil scalars" do
with_dummy do |db|
db.scalar("NULL").should be_nil
end
end
it "should raise executing raise query" do
with_dummy do |db|
expect_raises DB::Error do
db.exec "raise"
end
end
end
{% for value in [1, 1_i64, "hello", 1.5, 1.5_f32] %}
it "should set positional arguments for {{value.id}}" do
with_dummy do |db|
db.scalar("?", {{value}}).should eq({{value}})
end
end
{% end %}
it "executes and selects blob" do
with_dummy do |db|
ary = UInt8[0x53, 0x51, 0x4C]
slice = Bytes.new(ary.to_unsafe, ary.size)
(db.scalar("?", slice).as(Bytes)).to_a.should eq(ary)
end
end
end
end