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Contents
if !System.get_env("EXERCISM_TEST_EXAMPLES") do
Code.load_file("account.exs", __DIR__)
end
ExUnit.start
ExUnit.configure exclude: :pending, trace: true
# The BankAccount module should support four calls:
#
# open_bank()
# Called at the start of each test. Returns an account handle.
#
# close_bank(account)
# Called at the end of each test.
#
# balance(account)
# Get the balance of the bank account.
#
# update(account, amount)
# Increment the balance of the bank account by the given amount.
# The amount may be negative for a withdrawal.
#
# The initial value of the bank account should be 0.
defmodule BankAccountTest do
use ExUnit.Case
setup do
account = BankAccount.open_bank
{ :ok, account: account }
end
# @tag :pending
test "initial balance is 0", %{account: account} do
assert BankAccount.balance(account) == 0
end
@tag :pending
test "incrementing and checking balance", %{account: account} do
assert BankAccount.balance(account) == 0
BankAccount.update(account, 10)
assert BankAccount.balance(account) == 10
end
@tag :pending
test "amount is added to balance", %{account: account} do
assert BankAccount.balance(account) == 0
BankAccount.update(account, 10)
BankAccount.update(account, 10)
assert BankAccount.balance(account) == 20
end
@tag :pending
test "incrementing balance from another process then checking it from test process", %{account: account} do
assert BankAccount.balance(account) == 0
this = self()
spawn(fn ->
BankAccount.update(account, 20)
send(this, :continue)
end)
receive do
:continue -> :ok
after
1000 -> flunk("Timeout")
end
assert BankAccount.balance(account) == 20
end
end
Version data entries
138 entries across 138 versions & 1 rubygems