From d238d8952ba5e64d15f4cfbb4295aa76da38e835 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luka=20Marku=C5=A1i=C4=87?= <luka.markusic@microblink.com>
Date: Tue, 2 Aug 2022 23:46:02 +0200
Subject: [PATCH] Add AppendLineToFile tests

---
 pkg/commands/oscommands/os_test.go | 41 ++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/pkg/commands/oscommands/os_test.go b/pkg/commands/oscommands/os_test.go
index 0152fec58..389fdfc8e 100644
--- a/pkg/commands/oscommands/os_test.go
+++ b/pkg/commands/oscommands/os_test.go
@@ -1,6 +1,7 @@
 package oscommands
 
 import (
+	"io/ioutil"
 	"os"
 	"testing"
 
@@ -135,3 +136,43 @@ func TestOSCommandFileType(t *testing.T) {
 		_ = os.RemoveAll(s.path)
 	}
 }
+
+func TestOSCommandAppendLineToFile(t *testing.T) {
+	type scenario struct {
+		path  string
+		setup func(string)
+	}
+
+	scenarios := []scenario{
+		{
+			"testFile",
+			func(path string) {
+				if err := ioutil.WriteFile(path, []byte("hello"), 0o600); err != nil {
+					panic(err)
+				}
+			},
+		},
+		{
+			"testFileWithNewline",
+			func(path string) {
+				if err := ioutil.WriteFile(path, []byte("hello\n"), 0o600); err != nil {
+					panic(err)
+				}
+			},
+		},
+	}
+
+	for _, s := range scenarios {
+		s.setup(s.path)
+		osCommand := NewDummyOSCommand()
+		if err := osCommand.AppendLineToFile(s.path, "world"); err != nil {
+			panic(err)
+		}
+		f, err := ioutil.ReadFile(s.path)
+		if err != nil {
+			panic(err)
+		}
+		assert.EqualValues(t, "hello\nworld\n", string(f))
+		_ = os.RemoveAll(s.path)
+	}
+}