check formatting and regressions (#647)

* ci: check formatting and regressions

* style: format Cargo manifests

* taplo: ignore more stuff, preserve style

.github/workflows/ci.yaml

@@ -31,6 +31,15 @@ jobs:
           email: [email protected]
           token: ${{ secrets.WORKFLOW_PAT }}
 
+  fmt:
+    name: Check formatting
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: docker://docker.io/tamasfe/taplo:latest
+        with:
+          args: fmt --check --diff
+
   test:
     name: Test on Rust stable
     runs-on: ubuntu-latest
@@ -40,8 +49,11 @@ jobs:
         run: rustup update --no-self-update
       - uses: Swatinem/rust-cache@v2
       - name: Test Taplo
-        run: |
-          cargo test -p taplo
+        run: cargo test -p taplo
+      - name: Check formatting regression
+        run: cargo run -- fmt --check
+      - name: Check if git index is clean
+        run: git diff-index --quiet HEAD --
 
   check_wasm32:
     name: Check on WASM

Cargo.toml

@@ -18,9 +18,9 @@ arc-swap           = { version = "1.5.0" }
 async-trait        = { version = "0.1.52" }
 either             = { version = "1.6.1" }
 futures            = { version = "0.3.5" }
+getrandom          = { version = "0.2", default-features = false }
 glob               = { version = "0.3" }
 globset            = { version = "0.4.8" }
-getrandom          = { version = "0.2", default-features = false }
 hex                = { version = "0.4" }
 indexmap           = { version = "2.2" }
 itertools          = { version = "0.10.3" }
@@ -37,8 +37,8 @@ sha1               = { version = "0.10.5" }
 tap                = { version = "1.0.1" }
 thiserror          = { version = "1.0.30" }
 time               = { version = "0.3.7" }
-toml               = { version = "0.7" }
 tokio              = { version = "1.24.2", default-features = false }
+toml               = { version = "0.7" }
 tracing            = { version = "0.1.30" }
 tracing-subscriber = { version = "0.3.7" }
 url                = { version = "2.2.2" }

taplo.toml

@@ -3,9 +3,27 @@ exclude = [
   "**/*nested-1000.toml",
   "**/node_modules/**",
   "**/invalid/*",
-  "test-data/analytics/**",
+  "test-data/**",
 ]
 
+[formatting]
+
+[[rule]]
+
+[rule.formatting]
+include = ["taplo.toml"]
+keys    = ["exclude"]
+
+array_auto_collapse = false
+
+[[rule]]
+
+[rule.formatting]
+include = ["**/Cargo.toml"]
+
+array_auto_expand   = false
+inline_table_expand = false
+
 [[rule]]
 
 [rule.formatting]
@@ -16,9 +34,8 @@ include = ["**/Cargo.toml"]
 keys    = ["dependencies", "*-dependencies", "workspace"]
 
 [rule.formatting]
-reorder_keys      = true
-align_comments    = true
-array_auto_expand = false
+reorder_keys   = true
+align_comments = true
 
 [[rule]]
 include = ["**/Cargo.toml"]