shard-crystal-db/spec/serializable_spec.cr

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require "./spec_helper"
require "base64"
require "json"
class SimpleModel
include DB::Serializable
property c0 : Int32
property c1 : String
end
class NonStrictModel
include DB::Serializable
include DB::Serializable::NonStrict
property c1 : Int32
property c2 : String
end
class ModelWithDefaults
include DB::Serializable
property c0 : Int32 = 10
property c1 : String = "c"
end
class ModelWithNilables
include DB::Serializable
property c0 : Int32? = 10
property c1 : String?
end
class ModelWithNilUnionTypes
include DB::Serializable
property c0 : Int32 | Nil = 10
property c1 : String | Nil
end
class ModelWithKeys
include DB::Serializable
@[DB::Field(key: "c0")]
property foo : Int32
@[DB::Field(key: "c1")]
property bar : String
end
class ModelWithConverter
module Base64Converter
def self.from_rs(rs)
Base64.decode(rs.read(String))
end
end
include DB::Serializable
@[DB::Field(converter: ModelWithConverter::Base64Converter)]
property c0 : Slice(UInt8)
property c1 : String
end
class ModelWithInitialize
include DB::Serializable
property c0 : Int32
property c1 : String
def_equals c0, c1
def initialize(@c0, @c1)
end
end
class ModelWithJSON
include JSON::Serializable
include DB::Serializable
property c0 : Int32
property c1 : String
end
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struct ModelWithEnum
include DB::Serializable
getter c0 : Int32
getter c1 : MyEnum
# Ensure multiple enum types work together
getter c2 : MyOtherEnum
enum MyEnum
Foo = 0
Bar = 1
Baz = 2
Quux = 3
end
enum MyOtherEnum
OMG
LOL
WTF
BBQ
end
end
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macro from_dummy(query, type)
with_dummy do |db|
rs = db.query({{ query }})
rs.move_next
%obj = {{ type }}.new(rs)
rs.close
%obj
end
end
macro expect_model(query, t, values)
%obj = from_dummy({{ query }}, {{ t }})
%obj.should be_a({{ t }})
{% for key, value in values %}
%obj.{{key.id}}.should eq({{value}})
{% end %}
end
describe "DB::Serializable" do
it "should initialize a simple model" do
expect_model("1,a", SimpleModel, {c0: 1, c1: "a"})
end
it "should fail to initialize a simple model if types do not match" do
expect_raises DB::MappingException, /Invalid Int32: "?b"?\n deserializing SimpleModel#c0/ do
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from_dummy("b,a", SimpleModel)
end
end
it "should fail to initialize a simple model if there is a missing column" do
expect_raises DB::MappingException, "Missing column c1\n deserializing SimpleModel#c1" do
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from_dummy("1", SimpleModel)
end
end
it "should fail to initialize a simple model if there is an unexpected column" do
expect_raises DB::MappingException, "Unknown column: c2\n deserializing SimpleModel" do
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from_dummy("1,a,b", SimpleModel)
end
end
it "should initialize a non-strict model if there is an unexpected column" do
expect_model("1,2,a,b", NonStrictModel, {c1: 2, c2: "a"})
end
it "should initialize a model with default values" do
expect_model("1,a", ModelWithDefaults, {c0: 1, c1: "a"})
end
it "should initialize a model using default values if columns are missing" do
expect_model("1", ModelWithDefaults, {c0: 1, c1: "c"})
end
it "should initialize a model using default values if values are nil and types are non nilable" do
expect_model("1,NULL", ModelWithDefaults, {c0: 1, c1: "c"})
end
it "should initialize a model with nilables if columns are missing" do
expect_model("1", ModelWithNilables, {c0: 1, c1: nil})
end
it "should initialize a model with nilables ignoring default value if NULL" do
expect_model("NULL,a", ModelWithNilables, {c0: nil, c1: "a"})
end
it "should initialize a model with nil union types if columns are missing" do
expect_model("1", ModelWithNilUnionTypes, {c0: 1, c1: nil})
end
it "should initialize a model with nil union types ignoring default value if NULL" do
expect_model("NULL,a", ModelWithNilUnionTypes, {c0: nil, c1: "a"})
end
it "should initialize a model with different keys" do
expect_model("1,a", ModelWithKeys, {foo: 1, bar: "a"})
end
it "should initialize a model with a value converter" do
expect_model("Zm9v,a", ModelWithConverter, {c0: "foo".to_slice, c1: "a"})
end
it "should initialize a model with an initialize" do
obj1 = from_dummy("1,a", ModelWithInitialize)
obj2 = ModelWithInitialize.new(1, "a")
obj1.should eq obj2
end
it "should initialize a model with JSON serialization also defined" do
expect_model("1,a", ModelWithJSON, {c0: 1, c1: "a"})
end
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it "should initialize a model with an enum property" do
expect_model("1,2,LOL", ModelWithEnum, {
c0: 1,
c1: ModelWithEnum::MyEnum::Baz,
c2: ModelWithEnum::MyOtherEnum::LOL,
})
expect_raises DB::MappingException, "Unknown enum ModelWithEnum::MyEnum value: adsf" do
from_dummy("1,adsf,BBQ", ModelWithEnum)
end
end
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it "should initialize multiple instances from a single resultset" do
with_dummy do |db|
db.query("1,a 2,b") do |rs|
objs = SimpleModel.from_rs(rs)
objs.size.should eq(2)
objs[0].c0.should eq(1)
objs[0].c1.should eq("a")
objs[1].c0.should eq(2)
objs[1].c1.should eq("b")
end
end
end
it "Class.from_rs should close resultset" do
with_dummy do |db|
rs = db.query("1,a 2,b")
objs = SimpleModel.from_rs(rs)
rs.closed?.should be_true
objs.size.should eq(2)
objs[0].c0.should eq(1)
objs[0].c1.should eq("a")
objs[1].c0.should eq(2)
objs[1].c1.should eq("b")
end
end
it "should initialize from a query_one" do
with_dummy do |db|
obj = db.query_one "1,a", as: SimpleModel
obj.c0.should eq(1)
obj.c1.should eq("a")
end
end
it "should initialize from a query_all" do
with_dummy do |db|
objs = db.query_all "1,a 2,b", as: SimpleModel
objs.size.should eq(2)
objs[0].c0.should eq(1)
objs[0].c1.should eq("a")
objs[1].c0.should eq(2)
objs[1].c1.should eq("b")
end
end
end