ci: Move the Go tests from Prow to GitHub Actions

.github/workflows/test.yaml

@@ -0,0 +1,35 @@
+name: Test
+
+# Replaces the Prow jobs pull-appkit-go-test and post-appkit-go-test.
+on:
+  pull_request:
+    paths:
+      - '**.go'
+      - 'go.mod'
+      - 'go.sum'
+      - '.github/workflows/test.yaml'
+  push:
+    branches:
+      - master
+    paths:
+      - '**.go'
+      - 'go.mod'
+      - 'go.sum'
+      - '.github/workflows/test.yaml'
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        with:
+          go-version-file: go.mod
+
+      - run: go test ./...

log/log_test.go

@@ -4,8 +4,9 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"go/build"
 	"io"
+	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 	"time"
@@ -77,8 +78,15 @@ func TestLogError(t *testing.T) {
 	}
 }
 
+// moduleRoot is the directory of the appkit module. The stack traces
+// have absolute file paths, and the expected values do not.
+var moduleRoot = func() string {
+	_, file, _, _ := runtime.Caller(0)
+	return filepath.Dir(filepath.Dir(file))
+}()
+
 func cleanStacktrace(stacktrace string) (cleantrace string) {
-	cleantrace = strings.Replace(stacktrace, build.Default.GOPATH+"/src/", "", -1)
+	cleantrace = strings.Replace(stacktrace, moduleRoot+"/", "github.com/theplant/appkit/", -1)
 	lines := strings.Split(cleantrace, "\n")
 	if len(lines) >= 4 {
 		lines = lines[0:5]