First commit

.formatter.exs

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+[
+  import_deps: [:phoenix],
+  inputs: ["*.{ex,exs}", "{config,lib,test}/**/*.{ex,exs}"],
+  locals_without_parens: [
+    field: :*,
+    belongs_to: :*
+  ]
+]

.gitignore

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+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where 3rd-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+stripe_mock-*.tar
+
+# Since we are building assets from assets/,
+# we ignore priv/static. You may want to comment
+# this depending on your deployment strategy.
+/priv/static/
+
+# Files matching config/*.secret.exs pattern contain sensitive
+# data and you should not commit them into version control.
+#
+# Alternatively, you may comment the line below and commit the
+# secrets files as long as you replace their contents by environment
+# variables.
+/config/*.secret.exs

LICENSE

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+MIT License
+
+Copyright (c) 2019 Nick Kezhaya
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# StripeMock
+
+Starts a server that pretends to be Stripe. Docs here: https://hexdocs.pm/stripe_mock/StripeMock.html

config/config.exs

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+# This file is responsible for configuring your application
+# and its dependencies with the aid of the Mix.Config module.
+#
+# This configuration file is loaded before any dependency and
+# is restricted to this project.
+
+# General application configuration
+use Mix.Config
+
+# Configures the endpoint
+config :stripe_mock, StripeMockWeb.Endpoint,
+  url: [host: "localhost"],
+  http: [:inet6, port: System.get_env("PORT") || 12111],
+  secret_key_base: "ug9ATr9o7f/N2inxnW+SlrNVP7Ok+f9gAP43yHfqqm/bgFZSLeY6vQOY+wp562Iz",
+  render_errors: [view: StripeMockWeb.ErrorView, accepts: ~w(json)],
+  pubsub: [name: StripeMock.PubSub, adapter: Phoenix.PubSub.PG2]
+
+# Configures Elixir's Logger
+config :logger, :console,
+  format: "$time $metadata[$level] $message\n",
+  metadata: [:request_id]
+
+# Use Jason for JSON parsing in Phoenix
+config :phoenix, :json_library, Jason
+
+# Import environment specific config. This must remain at the bottom
+# of this file so it overrides the configuration defined above.
+import_config "#{Mix.env()}.exs"

config/dev.exs

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+use Mix.Config
+
+# For development, we disable any cache and enable
+# debugging and code reloading.
+#
+# The watchers configuration can be used to run external
+# watchers to your application. For example, we use it
+# with webpack to recompile .js and .css sources.
+config :stripe_mock, StripeMockWeb.Endpoint,
+  debug_errors: true,
+  code_reloader: true,
+  check_origin: false,
+  watchers: []
+
+# ## SSL Support
+#
+# In order to use HTTPS in development, a self-signed
+# certificate can be generated by running the following
+# Mix task:
+#
+#     mix phx.gen.cert
+#
+# Note that this task requires Erlang/OTP 20 or later.
+# Run `mix help phx.gen.cert` for more information.
+#
+# The `http:` config above can be replaced with:
+#
+#     https: [
+#       port: 4001,
+#       cipher_suite: :strong,
+#       keyfile: "priv/cert/selfsigned_key.pem",
+#       certfile: "priv/cert/selfsigned.pem"
+#     ],
+#
+# If desired, both `http:` and `https:` keys can be
+# configured to run both http and https servers on
+# different ports.
+
+# Do not include metadata nor timestamps in development logs
+config :logger, :console, format: "[$level] $message\n"
+
+# Set a higher stacktrace during development. Avoid configuring such
+# in production as building large stacktraces may be expensive.
+config :phoenix, :stacktrace_depth, 20
+
+# Initialize plugs at runtime for faster development compilation
+config :phoenix, :plug_init_mode, :runtime

config/test.exs

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+use Mix.Config
+
+config :stripe_mock, StripeMockWeb.Endpoint,
+  server: false
+
+# Print only warnings and errors during test
+config :logger, level: :warn

lib/stripe_mock.ex

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+defmodule StripeMock do
+  @moduledoc """
+  StripeMock is a service that duplicates some of the core functionality of the
+  Stripe API, without doing enough to receive a cease-and-desist letter from
+  Stripe's legal team.
+
+  This has been created for testing purposes only. MY GOD will it speed up your
+  test suite.
+
+  First, add the dependency to your `mix.exs`:
+
+      {:stripe_mock, "~> 0.1.0"}
+
+  (or whatever the latest version is; I probably won't be updating this moduledoc.)
+
+  In your app's `config/test.exs` file:
+
+      config :stripity_stripe, :api_base_url, "http://localhost:12111/v1/"
+      config :stripe_mock, StripeMockWeb.Endpoint, http: [port: 12111], server: true
+
+  That should get the StripeMock server to start in your test environment.
+
+  No database connection is needed. `StripeMock.Repo` is just a GenServer that
+  stores everything in its state. It'd be nice if `ecto_mnesia` was updated for
+  Ecto 3, but as of right now this is the next best option.
+  """
+end

lib/stripe_mock/api.ex

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+defmodule StripeMock.API do
+  alias StripeMock.API.Operations, as: Ops
+
+  # Customers
+  defdelegate list_customers(), to: Ops.Customer
+  defdelegate get_customer(id), to: Ops.Customer
+  defdelegate get_customer!(id), to: Ops.Customer
+  defdelegate create_customer(attrs \\ %{}), to: Ops.Customer
+  defdelegate update_customer(customer, attrs \\ %{}), to: Ops.Customer
+  defdelegate delete_customer(customer), to: Ops.Customer
+
+  # Tokens
+  defdelegate get_token(id), to: Ops.Token
+  defdelegate create_token(attrs \\ %{}), to: Ops.Token
+
+  # Cards
+  defdelegate list_cards(customer), to: Ops.Card
+  defdelegate get_card!(id), to: Ops.Card
+  defdelegate create_card(customer, attrs \\ %{}), to: Ops.Card
+  defdelegate create_customer_card_from_source(customer, source, metadata \\ %{}), to: Ops.Card
+  defdelegate update_card(card, attrs \\ %{}), to: Ops.Card
+  defdelegate delete_card(card), to: Ops.Card
+
+  # Sources - TODO
+  # defdelegate attach_source(source, customer), to: Ops.Source
+  # defdelegate detach_source(source, customer), to: Ops.Source
+
+  # Charges
+  defdelegate list_charges(), to: Ops.Charge
+  defdelegate get_charge(id), to: Ops.Charge
+  defdelegate create_charge(attrs \\ %{}), to: Ops.Charge
+  defdelegate update_charge(charge, attrs \\ %{}), to: Ops.Charge
+
+  # Refunds
+  defdelegate list_refunds(), to: Ops.Refund
+  defdelegate get_refund(id), to: Ops.Refund
+  defdelegate create_refund(attrs \\ %{}), to: Ops.Refund
+  defdelegate update_refund(refund, attrs \\ %{}), to: Ops.Refund
+end

lib/stripe_mock/api/card.ex

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+defmodule StripeMock.API.Card do
+  use Ecto.Schema
+  import Ecto.Changeset
+  alias StripeMock.API
+
+  schema "cards" do
+    field :brand, :string
+    field :created, :integer
+    field :deleted, :boolean
+    field :metadata, StripeMock.Metadata, default: %{}
+    field :last4, :string
+    field :source, :string
+
+    field :number, :string
+    field :exp_month, :integer
+    field :exp_year, :integer
+    field :cvc, :string
+
+    belongs_to :customer, API.Customer
+  end
+
+  @doc false
+  def create_changeset(card, attrs) do
+    card
+    |> cast(attrs, [:source, :metadata])
+    |> validate_required([:source, :metadata])
+    |> set_brand()
+    |> set_last4()
+  end
+
+  @doc false
+  def update_changeset(card, attrs) do
+    card
+    |> cast(attrs, [])
+    |> validate_required([])
+  end
+
+  @doc false
+  def token_changeset(card, attrs) do
+    card
+    |> cast(attrs, [:number, :exp_month, :exp_year, :cvc])
+    |> validate_required([:number, :exp_month, :exp_year, :cvc])
+    |> set_brand()
+    |> set_last4()
+  end
+
+  defp set_brand(changeset) do
+    brand =
+      case get_field(changeset, :number) do
+        "4242424242424242" -> "Visa"
+        "4000056655665556" -> "Visa"
+        "5555555555554444" -> "Mastercard"
+        "2223003122003222" -> "Mastercard"
+        "5200828282828210" -> "Mastercard"
+        "5105105105105100" -> "Mastercard"
+        "378282246310005" -> "American Express"
+        "371449635398431" -> "American Express"
+        "6011111111111117" -> "Discover"
+        "6011000990139424" -> "Discover"
+        "30569309025904" -> "Diners Club"
+        "38520000023237" -> "Diners Club"
+        "3566002020360505" -> "JCB"
+        "6200000000000005" -> "UnionPay"
+      end
+
+    put_change(changeset, :brand, brand)
+  end
+
+  defp set_last4(changeset) do
+    case get_field(changeset, :number) do
+      number when is_bitstring(number) ->
+        last4 = String.split_at(number, -6) |> elem(1)
+        put_change(changeset, :last4, last4)
+
+      _ ->
+        changeset
+    end
+  end
+end

lib/stripe_mock/api/charge.ex

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+defmodule StripeMock.API.Charge do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  alias StripeMock.API
+
+  @foreign_key_type :binary_id
+  schema "charges" do
+    field :amount, :integer
+    field :capture, :boolean, default: false
+    field :currency, :string
+    field :description, :string
+    field :metadata, StripeMock.Metadata, default: %{}
+    field :statement_descriptor, :string
+    field :transfer_group, :string
+
+    belongs_to :customer, API.Customer
+  end
+
+  @doc false
+  def create_changeset(charge, attrs) do
+    charge
+    |> cast(attrs, [
+      :amount,
+      :currency,
+      :capture,
+      :customer_id,
+      :description,
+      :metadata,
+      :statement_descriptor,
+      :transfer_group
+    ])
+    |> validate_required([:amount, :currency])
+  end
+
+  @doc false
+  def update_changeset(charge, attrs) do
+    charge
+    |> cast(attrs, [
+      :customer_id,
+      :description,
+      :metadata,
+      :transfer_group
+    ])
+    |> validate_required([:amount, :currency])
+  end
+end

lib/stripe_mock/api/customer.ex

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+defmodule StripeMock.API.Customer do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  @primary_key {:id, :binary_id, autogenerate: false}
+  schema "customers" do
+    field :created, :integer
+    field :currency, :string, default: "usd"
+    field :deleted, :boolean, default: false
+    field :description, :string
+    field :email, :string
+    field :metadata, StripeMock.Metadata, default: %{}
+    field :name, :string
+    field :phone, :string
+  end
+
+  @doc false
+  def changeset(customer, attrs) do
+    customer
+    |> cast(attrs, [:created, :currency, :description, :email, :name, :phone])
+    |> validate_email()
+  end
+
+  defp validate_email(changeset) do
+    case get_field(changeset, :email) do
+      nil -> changeset
+      _ -> validate_format(changeset, :email, ~r/.+@.+\..+/i)
+    end
+  end
+end