test: Add template loading test with different path separators

pkg/config/v2/template/loader.go

@@ -17,10 +17,9 @@ package template
 import (
 	"fmt"
 	"github.com/dynatrace/dynatrace-configuration-as-code/internal/log"
+	"github.com/spf13/afero"
 	"path/filepath"
 	"strings"
-
-	"github.com/spf13/afero"
 )
 
 // Template is the main interface of a configuration payload that may contain template references (using Go Templates)

pkg/config/v2/template/loader_test.go

@@ -92,6 +92,42 @@ func TestLoadTemplate_ReturnsErrorIfFileDoesNotExist(t *testing.T) {
 	assert.ErrorContains(t, gotErr, testFilepath)
 }
 
+func TestLoadTemplate_WorksWithAnyPathSeparator(t *testing.T) {
+
+	testFs := afero.NewReadOnlyFs(afero.NewOsFs())
+	tests := []struct {
+		name          string
+		givenFilepath string
+	}{
+		{
+			"windows path",
+			`test-resources\template.json`,
+		},
+		{
+			"relative windows path",
+			`..\template\test-resources\template.json`,
+		},
+		{
+			"unix path",
+			`test-resources/template.json`,
+		},
+		{
+			"relative unix path",
+			`../template/test-resources/template.json`,
+		},
+		{
+			"mixed path",
+			`..\template\test-resources/template.json`,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			_, gotErr := LoadTemplate(testFs, tt.givenFilepath)
+			assert.NilError(t, gotErr)
+		})
+	}
+}
+
 func Test_fileBasedTemplate_Id_Returns_Path(t *testing.T) {
 	template := fileBasedTemplate{
 		path:    "PATH",

pkg/config/v2/template/test-resources/template.json

@@ -0,0 +1,3 @@
+{
+  "name": {{ .name }}
+}