108 lines
3.1 KiB
Elixir
108 lines
3.1 KiB
Elixir
Code.require_file "test_helper.exs", __DIR__
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defmodule RecordTest do
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use ExUnit.Case, async: true
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require Record
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test "extract/2 extracts information from an Erlang file" do
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assert Record.extract(:file_info, from_lib: "kernel/include/file.hrl") ==
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[size: :undefined, type: :undefined, access: :undefined, atime: :undefined,
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mtime: :undefined, ctime: :undefined, mode: :undefined, links: :undefined,
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major_device: :undefined, minor_device: :undefined, inode: :undefined,
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uid: :undefined, gid: :undefined]
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end
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test "extract/2 handles nested records too" do
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namespace = Record.extract(:xmlElement, from_lib: "xmerl/include/xmerl.hrl")[:namespace]
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assert is_tuple(namespace)
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assert elem(namespace, 0) == :xmlNamespace
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end
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test "extract/2 with defstruct" do
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defmodule StructExtract do
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defstruct Record.extract(:file_info, from_lib: "kernel/include/file.hrl")
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end
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assert %{__struct__: StructExtract, size: :undefined} =
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StructExtract.__struct__
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end
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# We need indirection to avoid warnings
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defp record?(data, kind) do
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Record.is_record(data, kind)
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end
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test "is_record/2" do
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assert record?({User, "meg", 27}, User)
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refute record?({User, "meg", 27}, Author)
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refute record?(13, Author)
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end
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# We need indirection to avoid warnings
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defp record?(data) do
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Record.is_record(data)
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end
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test "is_record/1" do
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assert record?({User, "john", 27})
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refute record?({"john", 27})
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refute record?(13)
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end
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Record.defrecord :timestamp, [:date, :time]
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Record.defrecord :user, __MODULE__, name: "john", age: 25
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Record.defrecordp :file_info, Record.extract(:file_info, from_lib: "kernel/include/file.hrl")
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test "records generates macros that generates tuples" do
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record = user()
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assert user(record, :name) == "john"
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assert user(record, :age) == 25
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record = user(record, name: "meg")
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assert user(record, :name) == "meg"
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assert elem(record, user(:name)) == "meg"
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assert elem(record, 0) == RecordTest
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user(name: name) = record
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assert name == "meg"
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assert user(:name) == 1
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end
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test "records with no tag" do
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assert elem(file_info(), 0) == :file_info
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end
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test "records with dynamic arguments" do
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record = file_info()
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assert file_info(record, :size) == :undefined
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record = user()
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assert user(record) == [name: "john", age: 25]
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assert user(user()) == [name: "john", age: 25]
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msg = "expected argument to be a literal atom, literal keyword or a :file_info record, " <>
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"got runtime: {RecordTest, \"john\", 25}"
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assert_raise ArgumentError, msg, fn ->
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file_info(record)
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end
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end
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test "records visibility" do
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assert macro_exported?(__MODULE__, :user, 0)
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refute macro_exported?(__MODULE__, :file_info, 1)
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end
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test "records with no defaults" do
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record = timestamp()
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assert timestamp(record, :date) == nil
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assert timestamp(record, :time) == nil
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record = timestamp(date: :foo, time: :bar)
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assert timestamp(record, :date) == :foo
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assert timestamp(record, :time) == :bar
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end
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end
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