check: no commit by a test identity

.github/workflows/gate.yml

@@ -27,6 +27,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          # task check's testidentity reads the branch's commits since origin/main, which a pull
+          # request's shallow checkout does not have.
+          fetch-depth: 0
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
         with:
           go-version-file: go.mod

Taskfile.yml

@@ -10,11 +10,14 @@ tasks:
       - task: check
 
   check:
-    desc: What CI runs - fail if a runbook's front matter, sections or links are not what the app reads, it carries raw HTML or what a public repository must not, a workflow step is not one task, or an install skips Socket Firewall.
+    desc: What CI runs - fail if a runbook's front matter, sections or links are not what the app reads, it carries raw HTML or what a public repository must not, a workflow step is not one task, an install skips Socket Firewall, or a commit since origin/main is by a test's identity.
     cmds:
       # The Task running this one: go.mod's is not on PATH, and taskgate asks it for the task names.
       - go tool taskgate -task {{.TASK_EXE}}
       - go tool sfw check
+      # A test that writes git's author into the checkout makes every commit after it the
+      # test's; this refuses those commits before they reach main.
+      - go tool testidentity -base origin/main
       - go vet ./...
       - go test ./...
       - go run ./cmd/check

go.mod

@@ -104,7 +104,7 @@ require (
 	github.com/sirupsen/logrus v1.9.4 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
 	github.com/spiffe/go-spiffe/v2 v2.8.1 // indirect
-	github.com/spin-stack/go-tools v0.0.0-20261109064146-2b473b1bc102 // indirect
+	github.com/spin-stack/go-tools v0.0.0-20261113061646-1c6d5ec38bf5 // indirect
 	github.com/stretchr/objx v0.5.3 // indirect
 	github.com/stretchr/testify v1.12.1 // indirect
 	github.com/u-root/u-root v0.16.0 // indirect
@@ -116,11 +116,12 @@ require (
 	go.opentelemetry.io/contrib/detectors/gcp v1.45.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.70.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.70.0 // indirect
-	go.opentelemetry.io/otel v1.45.0 // indirect
-	go.opentelemetry.io/otel/metric v1.45.0 // indirect
+	go.opentelemetry.io/otel v1.47.0 // indirect
+	go.opentelemetry.io/otel/log v1.47.0 // indirect
+	go.opentelemetry.io/otel/metric v1.47.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.45.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v1.45.0 // indirect
-	go.opentelemetry.io/otel/trace v1.45.0 // indirect
+	go.opentelemetry.io/otel/trace v1.47.0 // indirect
 	go.yaml.in/yaml/v3 v3.0.6 // indirect
 	golang.org/x/crypto v0.58.0 // indirect
 	golang.org/x/net v0.61.0 // indirect
@@ -132,9 +133,9 @@ require (
 	golang.org/x/time v0.15.0 // indirect
 	google.golang.org/api v0.293.0 // indirect
 	google.golang.org/genproto v0.0.0-20260724162435-b2f20204f0df // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260724162435-b2f20204f0df // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260807164820-c8921c73eeea // indirect
-	google.golang.org/grpc v1.83.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20261012220534-4341edf3f941 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20261005182115-fad411399dd8 // indirect
+	google.golang.org/grpc v1.84.0 // indirect
 	google.golang.org/protobuf v1.36.12 // indirect
 	mvdan.cc/sh/moreinterp v0.0.0-20260817215856-d6550df7ed8d // indirect
 	mvdan.cc/sh/v3 v3.13.2-0.20260817215856-d6550df7ed8d // indirect
@@ -144,4 +145,5 @@ tool (
 	github.com/go-task/task/v3/cmd/task
 	github.com/spin-stack/go-tools/cmd/sfw
 	github.com/spin-stack/go-tools/cmd/taskgate
+	github.com/spin-stack/go-tools/cmd/testidentity
 )

go.sum

@@ -235,8 +235,8 @@ github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spiffe/go-spiffe/v2 v2.8.1 h1:eXZMLsu+3MLEPJyGJkolqtVrteZfQdUpOWj6LTiDl/E=
 github.com/spiffe/go-spiffe/v2 v2.8.1/go.mod h1:47Q0Q9/AqGha8QLHp+kxpH4Wca7X7EnOtlIJy3mxZ3U=
-github.com/spin-stack/go-tools v0.0.0-20261109064146-2b473b1bc102 h1:xoQmNO0ya9P6U1JVBPoI9Q3ltyBurMqWAORBQl6/OH0=
-github.com/spin-stack/go-tools v0.0.0-20261109064146-2b473b1bc102/go.mod h1:z8XsGI1fEXvJf5J5BOMkv9veB2rDkmRFs2FtSfluzVM=
+github.com/spin-stack/go-tools v0.0.0-20261113061646-1c6d5ec38bf5 h1:kG+kCljQMcd+449T9WHfMTHG22B5rrjxrX0CclzBjKI=
+github.com/spin-stack/go-tools v0.0.0-20261113061646-1c6d5ec38bf5/go.mod h1:ByG0Jbqk51BGkPSawQpK8y130gnxub0qyI6/1pHyfwM=
 github.com/stretchr/objx v0.5.3 h1:jmXUvGomnU1o3W/V5h2VEradbpJDwGrzugQQvL0POH4=
 github.com/stretchr/objx v0.5.3/go.mod h1:rDQraq+vQZU7Fde9LOZLr8Tax6zZvy4kuNKF+QYS+U0=
 github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
@@ -263,20 +263,22 @@ go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.7
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.70.0/go.mod h1:DqEFwLumhzMBDQv9PcWbyoDxHI/4lAk6CM4nJBH39sc=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.70.0 h1:LMuyCAyfalSjDyjdC65nK6N0zoTT63+E/u95X0JovZI=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.70.0/go.mod h1:085m8qbm4hgc8rZWGDEa4vmyyo2c3nPxUslYUKUIU04=
-go.opentelemetry.io/otel v1.45.0 h1:pdrWmLHofpubmArBv1LgFSv1Z0Ie/ppdZzu+kUN5EeU=
-go.opentelemetry.io/otel v1.45.0/go.mod h1:XZxIqPapzEYnhNSScF5DIqXhm/rYi0FzCe2XddAwZfQ=
+go.opentelemetry.io/otel v1.47.0 h1:j7ALJ/zgkS7Z6aeJW09p8VC9804bC+PpeTfCD4XPnOM=
+go.opentelemetry.io/otel v1.47.0/go.mod h1:8wS9O2qfXrYrzp6hIF/HOYJJf/wIhFPhR2xLuP+iXQU=
 go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.44.0 h1:hqxVTu/GtBF+vJ8d1fzW7fRxZFvgoDjWcxwwCaFDYpU=
 go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.44.0/go.mod h1:z5fVEF4X5v0ESvlJqBrrFlBVoj5EQuefZpzsu7R+x5Q=
-go.opentelemetry.io/otel/metric v1.45.0 h1:7Eg1uH7CJ5cXv9is6tnBe1FI6rj1nwUdbFypRm3br/M=
-go.opentelemetry.io/otel/metric v1.45.0/go.mod h1:HAPbm1nd3p1PmFH7v2dR+6BjXxw+Lq4a2+pndMAm08s=
+go.opentelemetry.io/otel/log v1.47.0 h1:cOTS1CcLbSQeZKanGJ+0JpF/+t4PELi3O3bbl2lqCcI=
+go.opentelemetry.io/otel/log v1.47.0/go.mod h1:9byitSQ5pLC6PpqwGXjqdMKya6ZTswHRZh2vvXT33nw=
+go.opentelemetry.io/otel/metric v1.47.0 h1:4PptaldXx3Eat1XjMZ68pPJEs5wrhlemctZE9a3UdWY=
+go.opentelemetry.io/otel/metric v1.47.0/go.mod h1:ADGSXxRrXM6bjbvLo535EstVFlPpPYZm4LBKixjDHwU=
 go.opentelemetry.io/otel/metric/x v0.67.0 h1:PcicCNZFkZ4bXfSooXdo3WN7RBOVOtjVdo1wD358Uns=
 go.opentelemetry.io/otel/metric/x v0.67.0/go.mod h1:FBjCWZe6wgcqxcMtjdGiClDKXb2YxxXii0CXftE4QtI=
 go.opentelemetry.io/otel/sdk v1.45.0 h1:4VVSMgQ83dUgW2aoX5f6JgLvHwIvzcuLnF9lUdCSpCw=
 go.opentelemetry.io/otel/sdk v1.45.0/go.mod h1:Sr40LgXV7DsKMMJMKOhUWOgMWTfAaqvm2kF0g7ilwuA=
 go.opentelemetry.io/otel/sdk/metric v1.45.0 h1:oVFszMfyj1Am6s24Vtc7wBb8BKLcwepJjNEYILuiE3o=
 go.opentelemetry.io/otel/sdk/metric v1.45.0/go.mod h1:vUWUxDZvu1WVRj8JA8S0AdhsPrZoDpA2DdZauIh4mDA=
-go.opentelemetry.io/otel/trace v1.45.0 h1:l/mP6Uv7oNO7/TblbhpbgMidxhq1uO/rPsikOyVhxag=
-go.opentelemetry.io/otel/trace v1.45.0/go.mod h1:qoJJA2xNMnxRrdISU/kLtfUH2wNeQbiv+jhs/CxI8bc=
+go.opentelemetry.io/otel/trace v1.47.0 h1:JOjX/Oci8K94QHddo+bbfya/Ai/nf6/dt9ZfrFNWSrM=
+go.opentelemetry.io/otel/trace v1.47.0/go.mod h1:jNaSLa2PZEYFG6fRjJABAu+bw4FS08uDmPg28lTghu0=
 go.yaml.in/yaml/v3 v3.0.6 h1:zcDfvjXEqTQmpjniUBLc91xYJMB2c4QOFxEF/LCEckM=
 go.yaml.in/yaml/v3 v3.0.6/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
 golang.org/x/crypto v0.58.0 h1:COkYLr4k7nDI4r6QtMML2AfzeIswWHAJthLS6K/M/54=
@@ -303,12 +305,12 @@ google.golang.org/api v0.293.0 h1:p9XIWOf63U4OgYx120ZwVU8+vl4XTPmWfgVPnmOAS9w=
 google.golang.org/api v0.293.0/go.mod h1:6n5tjEB1gzwniZTepZ0g5u+wM7Bof5GeULCx/zh8ZE0=
 google.golang.org/genproto v0.0.0-20260724162435-b2f20204f0df h1:A7u56ilVtWR3CySHErsWAsimNwD4FoX9KWd8SUCn6vc=
 google.golang.org/genproto v0.0.0-20260724162435-b2f20204f0df/go.mod h1:4RPHZcXMGptb7aRZb+M43xI7ixmjEtASEf2VtOOBZbU=
-google.golang.org/genproto/googleapis/api v0.0.0-20260724162435-b2f20204f0df h1:NsJx+hCSwIBI6+C4BuJIkb8xOG1M+nfQDsqIrQHT92k=
-google.golang.org/genproto/googleapis/api v0.0.0-20260724162435-b2f20204f0df/go.mod h1:1brfde68Npq6+WA75c1EHWPijZEG1kMus61ygPZfn4A=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260807164820-c8921c73eeea h1:kVhQEPTpKQahD5+JSBTfBB19wcgQTTjAIn45MBqnyHk=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260807164820-c8921c73eeea/go.mod h1:4Hqkh8ycfw05ld/3BWL7rJOSfebL2Q+DVDeRgYgxUU8=
-google.golang.org/grpc v1.83.0 h1:JeNZEKJFbQxArAMl+hiytHauacDNqJUllNfmIMmpqnQ=
-google.golang.org/grpc v1.83.0/go.mod h1:kDyl6SKsiHKt0uylY5gtn5cEjkrIOhQOGDgIc4JGwzQ=
+google.golang.org/genproto/googleapis/api v0.0.0-20261012220534-4341edf3f941 h1:DS/w3N8rsfrwxwgGSj6WhMsPo7aNQGmDx74J81zd0NQ=
+google.golang.org/genproto/googleapis/api v0.0.0-20261012220534-4341edf3f941/go.mod h1:AuGAdi9KnXss7xbLxIKhCvk+Ro/SxpET/iS45DNYN+M=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20261005182115-fad411399dd8 h1:0SXBqli5dnuCKMjI/X3FM226zEaEa0GUcSCJtN1vL2o=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20261005182115-fad411399dd8/go.mod h1:OaIUM3+LpYcK2GXM4FTmhWoIq371Owdr+Cc7/BsYHHc=
+google.golang.org/grpc v1.84.0 h1:soMyaPJ8pAak5PIQ0DGBUir0XRo2fRoMqhNWMLlLxO0=
+google.golang.org/grpc v1.84.0/go.mod h1:ljCht0DrxQrXBDRTZp52Qxh3Ffk8CdYm2sj4O2QN2C0=
 google.golang.org/protobuf v1.36.12 h1:pJOKDDOyeXErUroCihFAd5LQuwXBSpVnKGrj5o/fwxc=
 google.golang.org/protobuf v1.36.12/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=