support reverting merge commits

pkg/utils/utils_test.go

@@ -47,3 +47,43 @@ func TestAsJson(t *testing.T) {
 	// no idea why this is returning empty hashes but it's works in the app ¯\_(ツ)_/¯
 	assert.EqualValues(t, "{}", output)
 }
+
+func TestSafeTruncate(t *testing.T) {
+	type scenario struct {
+		str      string
+		limit    int
+		expected string
+	}
+
+	scenarios := []scenario{
+		{
+			str:      "",
+			limit:    0,
+			expected: "",
+		},
+		{
+			str:      "12345",
+			limit:    3,
+			expected: "123",
+		},
+		{
+			str:      "12345",
+			limit:    4,
+			expected: "1234",
+		},
+		{
+			str:      "12345",
+			limit:    5,
+			expected: "12345",
+		},
+		{
+			str:      "12345",
+			limit:    6,
+			expected: "12345",
+		},
+	}
+
+	for _, s := range scenarios {
+		assert.EqualValues(t, s.expected, SafeTruncate(s.str, s.limit))
+	}
+}