diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 20096c81c..9bfaf3f03 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -16,8 +16,8 @@ jobs:
       - run: sudo apt-get install -y libgpgme-dev
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.17.12'
-      - run: go test -v ./...
+          go-version: '1.25.4'
+      - run: go test -v -v ./...
 
   ubuntu-ppe64le:
     runs-on: ubuntu-latest
@@ -32,14 +32,14 @@ jobs:
             apt-get update -q -y
             apt-get install -y libgpgme-dev golang
           run: |
-            go test -v ./...
+            go test -v -v ./...
 
   macos:
     runs-on: macos-latest
     steps:
       - uses: actions/checkout@v3
-      - run: brew install gpgme gnupg@1.4
+      - run: brew install gpgme gnupg
       - uses: actions/setup-go@v3
         with:
-          go-version: '1.17.12'
-      - run: go test -v ./...
+          go-version: '1.25.4'
+      - run: GPGME_DEBUG=9 go test -v -v ./...
diff --git a/data.go b/data.go
index 0e81c36d6..4e512c573 100644
--- a/data.go
+++ b/data.go
@@ -11,6 +11,7 @@ import (
 	"os"
 	"runtime"
 	"runtime/cgo"
+	"strings"
 	"unsafe"
 )
 
@@ -45,6 +46,9 @@ func gogpgme_writefunc(handle, buffer unsafe.Pointer, size C.size_t) C.ssize_t {
 	d := h.Value().(*Data)
 	n, err := d.w.Write(unsafe.Slice((*byte)(buffer), size))
 	if err != nil && err != io.EOF {
+		if !strings.Contains(err.Error(), "a special error") {
+			panic("UNEXPECTED WRITE ERROR: " + err.Error())
+		}
 		d.err = err
 		C.gpgme_err_set_errno(C.EIO)
 		return -1
diff --git a/gpgme_test.go b/gpgme_test.go
index 49ea5bdf3..ee1f4cba4 100644
--- a/gpgme_test.go
+++ b/gpgme_test.go
@@ -118,10 +118,12 @@ func TestGetDirInfo(t *testing.T) {
 }
 
 func ctxWithCallback(t *testing.T) *Context {
-	ensureVersion(t, "1.", "can only set password callback for GPG v1.x")
+	//ensureVersion(t, "1.", "can only set password callback for GPG v1.x")
 
 	ctx, err := New()
 	checkError(t, err)
+	ctx.SetPinEntryMode(PinEntryLoopback)
+	checkError(t, err)
 
 	checkError(t, ctx.SetCallback(func(uid_hint string, prev_was_bad bool, f *os.File) error {
 		if prev_was_bad {
@@ -246,8 +248,14 @@ func TestContext_Verify(t *testing.T) {
 	ctx, err := New()
 	checkError(t, err)
 
-	_, err = ctx.GetKey("test@example.com", false)
+	key, err := ctx.GetKey("test@example.com", false)
 	checkError(t, err)
+	if key == nil {
+		t.Fatal("Expected key, got nil")
+	}
+	if key.Fingerprint() != "44B646DC347C31E867FF4F450327FFB0229F6136" {
+		t.Fatalf("Unexpected fingerprint %q", key.Fingerprint())
+	}
 
 	signed, err := NewDataBytes([]byte(testSignedText))
 	checkError(t, err)