feat: add validation for object-format flag in repo create command (#741)

This PR adds validation for the `--object-format` flag in the `repo create` command. The flag now accepts only `sha1` or `sha256` as valid values, and returns an error for any other value.

Changes:
- Added validation in `runRepoCreate` to check for valid object format values
- Added unit tests to verify the validation logic
- Fixed the field name from `ObjectFormat` to `ObjectFormatName` to match the SDK

The changes ensure that users get clear error messages when using invalid object format values, improving the user experience.

Fix #727
Fix #660
Fix #767

Co-authored-by: techknowlogick <techknowlogick@noreply.gitea.com>
Reviewed-on: https://gitea.com/gitea/tea/pulls/741
Reviewed-by: TheFox0x7 <thefox0x7@noreply.gitea.com>

cmd/repos/create_test.go

@@ -0,0 +1,88 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repos
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"code.gitea.io/sdk/gitea"
+	"code.gitea.io/tea/modules/task"
+	"github.com/stretchr/testify/assert"
+	"github.com/urfave/cli/v3"
+)
+
+func TestCreateRepoObjectFormat(t *testing.T) {
+	giteaURL := os.Getenv("GITEA_TEA_TEST_URL")
+	if giteaURL == "" {
+		t.Skip("GITEA_TEA_TEST_URL is not set, skipping test")
+	}
+
+	timestamp := time.Now().Unix()
+	tests := []struct {
+		name        string
+		args        []string
+		wantOpts    gitea.CreateRepoOption
+		wantErr     bool
+		errContains string
+	}{
+		{
+			name: "create repo with sha1 object format",
+			args: []string{"--name", fmt.Sprintf("test-sha1-%d", timestamp), "--object-format", "sha1"},
+			wantOpts: gitea.CreateRepoOption{
+				Name:             fmt.Sprintf("test-sha1-%d", timestamp),
+				ObjectFormatName: "sha1",
+			},
+			wantErr: false,
+		},
+		{
+			name: "create repo with sha256 object format",
+			args: []string{"--name", fmt.Sprintf("test-sha256-%d", timestamp), "--object-format", "sha256"},
+			wantOpts: gitea.CreateRepoOption{
+				Name:             fmt.Sprintf("test-sha256-%d", timestamp),
+				ObjectFormatName: "sha256",
+			},
+			wantErr: false,
+		},
+		{
+			name:        "create repo with invalid object format",
+			args:        []string{"--name", fmt.Sprintf("test-invalid-%d", timestamp), "--object-format", "invalid"},
+			wantErr:     true,
+			errContains: "invalid object format",
+		},
+	}
+
+	giteaUserName := os.Getenv("GITEA_TEA_TEST_USERNAME")
+	giteaUserPasword := os.Getenv("GITEA_TEA_TEST_PASSWORD")
+
+	err := task.CreateLogin("test", "", giteaUserName, giteaUserPasword, "", "", "", giteaURL, "", "", true, false, false, false)
+	if err != nil && err.Error() != "login name 'test' has already been used" {
+		t.Fatal(err)
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			reposCmd := &cli.Command{
+				Name:     "repos",
+				Commands: []*cli.Command{&CmdRepoCreate},
+			}
+			tt.args = append(tt.args, "--login", "test")
+			args := append([]string{"repos", "create"}, tt.args...)
+
+			err := reposCmd.Run(context.Background(), args)
+			if tt.wantErr {
+				assert.Error(t, err)
+				if tt.errContains != "" {
+					assert.Contains(t, err.Error(), tt.errContains)
+				}
+				return
+			}
+
+			assert.NoError(t, err)
+		})
+	}
+}