add unit test

pkg/utils/strings_test.go

@@ -0,0 +1,110 @@
+package utils
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSubString(t *testing.T) {
+	str := "foobar"
+	expectedValue := "f"
+	actualValue := SubString(str, 0, 1)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "fo"
+	actualValue = SubString(str, 0, 2)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "oba"
+	actualValue = SubString(str, 2, 3)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "foobar"
+	actualValue = SubString(str, 0, 6)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "ba"
+	actualValue = SubString(str, -3, 2)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestSubString_EmptyStr(t *testing.T) {
+	str := ""
+	expectedValue := ""
+	actualValue := SubString(str, 0, 1)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = ""
+	actualValue = SubString(str, 0, 2)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = ""
+	actualValue = SubString(str, 2, 3)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestSubString_OverBoundary(t *testing.T) {
+	str := "foobar"
+	expectedValue := ""
+	actualValue := SubString(str, 100, 1)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "foobar"
+	actualValue = SubString(str, 0, 100)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "obar"
+	actualValue = SubString(str, 2, 100)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "bar"
+	actualValue = SubString(str, -3, 100)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = "foobar"
+	actualValue = SubString(str, -100, 100)
+	assert.Equal(t, expectedValue, actualValue)
+
+	expectedValue = ""
+	actualValue = SubString(str, 0, -100)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestGetRandomString(t *testing.T) {
+	actualValue, err := GetRandomString(10)
+	assert.Equal(t, nil, err)
+	assert.Len(t, actualValue, 10)
+}
+
+func TestGetRandomNumberOrLetter(t *testing.T) {
+	actualValue, err := GetRandomNumberOrLetter(10)
+	assert.Equal(t, nil, err)
+	assert.Len(t, actualValue, 10)
+}
+
+func TestMD5Encode(t *testing.T) {
+	str := "foobar"
+	expectedValue := "3858f62230ac3c915f300c664312c63f"
+	actualData := MD5Encode([]byte(str))
+	actualValue := fmt.Sprintf("%x", actualData)
+	assert.Equal(t, expectedValue, actualValue)
+
+	str = ""
+	expectedValue = "d41d8cd98f00b204e9800998ecf8427e"
+	actualData = MD5Encode([]byte(str))
+	actualValue = fmt.Sprintf("%x", actualData)
+	assert.Equal(t, expectedValue, actualValue)
+}
+
+func TestEncryptSecretAndDecryptSecret(t *testing.T) {
+	str := "foo"
+	key := "bar"
+	expectedValue := str
+
+	encryptedStr, err := EncryptSecret(str, key)
+	actualValue, err := DecryptSecret(encryptedStr, key)
+	assert.Equal(t, nil, err)
+	assert.Equal(t, expectedValue, actualValue)
+}