Extract reusable integration test cases to module (jwilger#32)

In order to reuse the same test logic for different event backends, we
want to extract the generic test logic to a module that can be reused.

---------

Signed-off-by: John Wilger <john@johnwilger.com>
Co-authored-by: John Wilger <john@johnwilger.com>

Author: jferris

.devcontainer/Dockerfile

@@ -0,0 +1 @@
+FROM xtruder/nix-devcontainer:v1

.devcontainer/devcontainer.json

@@ -0,0 +1,39 @@
+// For format details, see https://aka.ms/vscode-remote/devcontainer.json or the definition README at
+// https://github.com/microsoft/vscode-dev-containers/tree/master/containers/docker-existing-dockerfile
+{
+  "name": "mneme",
+  "dockerFile": "Dockerfile",
+  "context": "${localWorkspaceFolder}",
+  "build": {
+    "args": {
+      "USER_UID": "${localEnv:USER_UID}",
+      "USER_GID": "${localEnv:USER_GID}"
+    }
+  },
+  
+  // run arguments passed to docker
+  "runArgs": ["--security-opt", "label=disable"],
+
+  "containerEnv": {
+    // extensions to preload before other extensions
+    "PRELOAD_EXTENSIONS": "Rubymaniac.vscode-direnv"
+  },
+
+  // disable command overriding and updating remote user ID
+  "overrideCommand": false,
+  "userEnvProbe": "loginShell",
+  "updateRemoteUserUID": false,
+
+  // build development environment on creation, make sure you already have shell.nix
+  "onCreateCommand": "nix develop --install",
+
+  // Add the IDs of extensions you want installed when the container is created.
+  "extensions": ["Rubymaniac.vscode-direnv"],
+
+  "features": {
+    "ghcr.io/devcontainers/features/docker-in-docker:2": {}
+  },
+
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  "forwardPorts": [2113, 5432]
+}

.envrc

@@ -0,0 +1 @@
+use flake

.github/workflows/publish-crate.yml

@@ -22,3 +22,5 @@ Cargo.lock
 .cargo
 .bacon-locations
 .pg_data
+
+.direnv

.gitignore

@@ -39,7 +39,6 @@
             rust-analyzer
             rustToolchain
             just
-            goose-cli
           ];
 
           env = {