Add tests for findBaseDir

Author: matteosuppo

tools/download.go

@@ -319,6 +319,9 @@ func stringInSlice(str string, list []string) bool {
 }
 
 func findBaseDir(dirList []string) string {
+	if len(dirList) == 1 {
+		return filepath.Dir(dirList[0]) + "/"
+	}
 	baseDir := ""
 	// https://github.com/backdrop-ops/contrib/issues/55#issuecomment-73814500
 	dontdiff := []string{"pax_global_header"}

tools/download_test.go

@@ -0,0 +1,24 @@
+package tools
+
+import (
+	"fmt"
+	"testing"
+)
+
+func Test_findBaseDir(t *testing.T) {
+	cases := []struct {
+		dirList []string
+		want    string
+	}{
+		{[]string{"bin/bossac"}, "bin/"},
+		{[]string{"bin/", "bin/bossac"}, "bin/"},
+		{[]string{"bin/", "bin/bossac", "example"}, ""},
+	}
+	for _, tt := range cases {
+		t.Run(fmt.Sprintln(tt.dirList), func(t *testing.T) {
+			if got := findBaseDir(tt.dirList); got != tt.want {
+				t.Errorf("findBaseDir() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}