🧉 mmap: add TestReadCustomFile

Author: database64128

mmap/mmap_test.go

@@ -1,6 +1,7 @@
 package mmap
 
 import (
+	"bytes"
 	"os"
 	"testing"
 )
@@ -32,3 +33,27 @@ func TestReadFile(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+func TestReadCustomFile(t *testing.T) {
+	name, ok := os.LookupEnv("SSGO_MMAP_TEST_FILE")
+	if !ok {
+		t.Skip("SSGO_MMAP_TEST_FILE is not set")
+	}
+
+	expectedData, err := os.ReadFile(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	data, close, err := ReadFile[[]byte](name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !bytes.Equal(data, expectedData) {
+		t.Errorf("data = %v, want %v", data, expectedData)
+	}
+
+	if err = close(); err != nil {
+		t.Fatal(err)
+	}
+}