add new tests

gcache_test.go

@@ -463,4 +463,11 @@ func TestCacheStats(t *testing.T) {
 	assert.True(t, ok)
 	assert.Equal(t, s.ClearCount, goroutines)
 	assert.Equal(t, s.ErrClearCount, 0)
+
+	c.ResetStats()
+
+	s, ok = c.Stats()
+	assert.True(t, ok)
+	assert.Equal(t, s.ReadBytes, 0)
+	assert.Equal(t, s.WriteBytes, 0)
 }

internal/hasher/hasher_test.go

@@ -2,6 +2,7 @@ package hasher
 
 import (
 	"errors"
+	"fmt"
 	"github.com/stretchr/testify/assert"
 	"reflect"
 	"testing"
@@ -36,4 +37,23 @@ func TestMsgpackHasher(t *testing.T) {
 	k, err = h.Hash(m)
 	assert.Nil(t, err)
 	assert.Equal(t, k, "e4ff5e7d7a7f08e9800a3e25cb774533cb20040df30b6ba10f956f9acd0eb3f7")
+
+	_, err = h.Hash(nil)
+	assert.Nil(t, err)
+	assert.Equal(t, k, "e4ff5e7d7a7f08e9800a3e25cb774533cb20040df30b6ba10f956f9acd0eb3f7")
+
+	unsupportedTypes := map[string]any{
+		"msgpack: Encode(unsupported func())":     func() {},
+		"msgpack: Encode(unsupported chan int)":   make(chan int),
+		"msgpack: Encode(unsupported complex128)": complex(10, 11),
+	}
+
+	for s, anyType := range unsupportedTypes {
+		_, err = h.Hash(anyType)
+		assert.NotNil(t, err)
+		e, ok := err.(*Error)
+		assert.True(t, ok)
+		assert.Equal(t, e.Error(), fmt.Sprintf("error when hashing object of type %T: %s", anyType, s))
+		assert.Equal(t, e.Unwrap().Error(), s)
+	}
 }

store/sqlite_test.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"errors"
 	"github.com/stretchr/testify/assert"
+	"os"
 	"sync"
 	"testing"
 )
@@ -48,8 +49,14 @@ func TestSQLiteStore_Context(t *testing.T) {
 }
 
 func TestSQLiteStore(t *testing.T) {
+	filename := "test.db"
+	if _, err := os.Stat(filename); err == nil {
+		err := os.Remove(filename)
+		assert.Nil(t, err)
+	}
+
 	ctx := context.Background()
-	db, err := sql.Open("sqlite3", "test.db")
+	db, err := sql.Open("sqlite3", filename)
 	assert.Nil(t, err)
 	s, err := SQLiteStore(ctx, db)
 	assert.Nil(t, err)