Changelog

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All notable changes to this project are documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.3.1 - 2026-10-03

Changed

  • Requires Mutare 0.5 ({:mutare, "~> 0.5.0"}) and mutare_plug 0.2.1.

0.3.0 - 2026-09-26

Changed

  • Breaking: requires Mutare 0.4.1 and mutare_plug 0.2 ({:mutare, "~> 0.4.1"}, {:mutare_plug, "~> 0.2"}). Mutare 0.4.0 offers a call written as a pipe stage to a mutator as the direct call it is sugar for, with the piped value as its first argument; the families here read their argument positions that way now and no longer need Mutare's removed pipe-mode API.
  • A mutant that leaves the piped value alone is still reported at the stage (conn |> json(%{id: 1}) → json(%{}) at the json stage, as before); one that replaces the whole call is reported over the whole pipe.

Added

  • The removal families mutate a call written as a pipe stage. socket |> push("ack", %{}) and pubsub |> Phoenix.PubSub.subscribe(topic) now collapse to :ok over the whole pipe, upstream stages included; through 0.2.0 the piped spelling was left alone because the :ok could not be spelled as a stage.

0.2.0 - 2026-09-14

Added

  • Mutare.Phoenix.ChannelReply (:channel_reply) — drops replies from channel return tuples in modules implementing Phoenix.Channel, exposing tests that do not check join payloads or callback replies.
  • Mutare.Phoenix.ChannelMessage (:channel_message) — replaces channel broadcast, push, and deferred reply calls with :ok, exposing tests that do not assert outbound messages.
  • Mutare.Phoenix.PubSub (:pubsub) — replaces subscription, unsubscription, and broadcast calls with :ok, exposing tests that do not check message delivery or subscription changes.
  • Mutare.Phoenix.Token (:token) — swaps sign ↔ encrypt and verify ↔ decrypt, replaces token payloads with nil, and disables expiry by replacing explicit integer max_age: values with :infinity. Marks max_age: as a timeout so built-in integer and atom mutators skip it.
  • Variant-specific ignore support for channel message, PubSub, and token mutations, such as # mutare:ignore[token:expiry].

Changed

  • Mutare.Phoenix.all/0 now includes the four new families alongside the three controller families, enabling them in configurations using this preset.

0.1.0 - 2026-09-07

Initial release. Builds on mutare_plug, which provides the Plug.Conn families (:plug_halt, :http_status, :plug_session, :resp_header, :resp_cookie, :resp_body).

Added

  • Mutare.Phoenix.Redirect (:redirect_status) — swaps explicit atom status: options on Phoenix.Controller.redirect/2 among valid redirect status siblings.
  • Mutare.Phoenix.Body (:controller_body) — blanks the body argument of Phoenix.Controller.json/2 to %{} and of text/2 / html/2 to "" ("does any test read the rendered body?"); on a literal text/html body its whole-call rewrite supersedes the built-in string family's sentinel leaves via Mutare's overlap pruning.
  • Mutare.Phoenix.Download (:download_disposition) — flips the explicit disposition: option of Phoenix.Controller.send_download/3 between :attachment and :inline.
  • Mutare.Phoenix as a Mutare.CallRouting extension (list it under :extensions): routes the Phoenix.Router DSL (get/scope/…) :skip, so compile-time route definitions are left unmutated, and Phoenix.Component.sigil_H/2 (~H) arguments as compile-time literals, so HEEx arguments remain valid during metamutant compilation.
  • Mutare.Phoenix.all/0 for splicing the Phoenix families into a :mutators list, composing with Mutare.Plug.all/0.