handle os.ErrNotExist; update tests

bundle/config/mutator/load_git_details.go

@@ -2,6 +2,8 @@ package mutator
 
 import (
 	"context"
+	"errors"
+	"os"
 	"path/filepath"
 
 	"github.com/databricks/cli/bundle"
@@ -24,7 +26,9 @@ func (m *loadGitDetails) Apply(ctx context.Context, b *bundle.Bundle) diag.Diagn
 	var diags diag.Diagnostics
 	info, err := git.FetchRepositoryInfo(ctx, b.BundleRoot.Native(), b.WorkspaceClient())
 	if err != nil {
-		diags = append(diags, diag.WarningFromErr(err)...)
+		if !errors.Is(err, os.ErrNotExist) {
+			diags = append(diags, diag.WarningFromErr(err)...)
+		}
 	}
 
 	if info.WorktreeRoot == "" {

internal/git_fetch_test.go

@@ -101,7 +101,7 @@ func TestAccFetchRepositoryInfoAPI_FromNonRepo(t *testing.T) {
 				assert.NoError(t, err)
 			} else {
 				assert.Error(t, err)
-				assert.Contains(t, err.Error(), test.msg)
+				assert.ErrorContains(t, err, test.msg)
 			}
 			assertEmptyGitInfo(t, info)
 		})
@@ -151,7 +151,7 @@ func TestAccFetchRepositoryInfoDotGit_FromNonGitRepo(t *testing.T) {
 	for _, input := range tests {
 		t.Run(input, func(t *testing.T) {
 			info, err := git.FetchRepositoryInfo(ctx, input, wt.W)
-			assert.NoError(t, err)
+			assert.ErrorIs(t, err, os.ErrNotExist)
 			assertEmptyGitInfo(t, info)
 		})
 	}