Merge pull request #4 from knei-knurow/feature/add_fuzz_test

Add fuzz test for `Create`

.github/workflows/release.yaml

@@ -0,0 +1,15 @@
+name: Test
+
+on:
+  workflow_dispatch:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: ncipollo/release-action@v1

.github/workflows/go.yaml → .github/workflows/test.yaml

@@ -1,10 +1,8 @@
 name: Test
 
 on:
-  push:
-    branches: [master]
-  pull_request:
-    branches: [master]
+  workflow_dispatch:
+  pull_request_target:
 
 jobs:
   build:
@@ -16,4 +14,4 @@ jobs:
         uses: actions/setup-go@v2
 
       - name: Run tests
-        run: go test
+        run: go test -fuzz Fuzz -fuzztime 10s

frames_test.go

@@ -3,6 +3,7 @@ package frames_test
 import (
 	"bytes"
 	"fmt"
+	"math"
 	"testing"
 
 	"github.com/knei-knurow/frames"
@@ -12,7 +13,6 @@ var testCases = []struct {
 	inputHeader      [2]byte
 	inputData        []byte
 	expectedChecksum byte
-	expectedLength   int
 	frame            []byte
 }{
 	{
@@ -188,3 +188,25 @@ func TestRecreate(t *testing.T) {
 		})
 	}
 }
+
+func FuzzCreate(f *testing.F) {
+	for _, tc := range testCases {
+		f.Add(tc.inputData)
+	}
+
+	f.Fuzz(func(t *testing.T, orig []byte) {
+		if len(orig) > math.MaxUint8 {
+			return
+		}
+
+		created := frames.Create([2]byte{'L', 'D'}, orig)
+
+		if created.LenData() != len(orig) {
+			t.Errorf("got data length %d, want data %d", created.LenData(), len(orig))
+		}
+
+		if !frames.Verify(created) {
+			t.Errorf("frame recreation failed")
+		}
+	})
+}