Add TestPrepareWikiFileName (#16487)

* Add TestPrepareWikiFileName

* use LsTree as LsFiles is index only

* ajust other tests

Co-authored-by: Andrew Thornton <art27@cantab.net>

services/wiki/wiki_test.go

@@ -210,3 +210,54 @@ func TestRepository_DeleteWikiPage(t *testing.T) {
 	_, err = masterTree.GetTreeEntryByPath(wikiPath)
 	assert.Error(t, err)
 }
+
+func TestPrepareWikiFileName(t *testing.T) {
+	models.PrepareTestEnv(t)
+	repo := models.AssertExistsAndLoadBean(t, &models.Repository{ID: 1}).(*models.Repository)
+	gitRepo, err := git.OpenRepository(repo.WikiPath())
+	defer gitRepo.Close()
+	assert.NoError(t, err)
+
+	tests := []struct {
+		name      string
+		arg       string
+		existence bool
+		wikiPath  string
+		wantErr   bool
+	}{{
+		name:      "add suffix",
+		arg:       "Home",
+		existence: true,
+		wikiPath:  "Home.md",
+		wantErr:   false,
+	}, {
+		name:      "test special chars",
+		arg:       "home of and & or wiki page!",
+		existence: false,
+		wikiPath:  "home-of-and-%26-or-wiki-page%21.md",
+		wantErr:   false,
+	}, {
+		name:      "fount unescaped cases",
+		arg:       "Unescaped File",
+		existence: true,
+		wikiPath:  "Unescaped File.md",
+		wantErr:   false,
+	}}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			existence, newWikiPath, err := prepareWikiFileName(gitRepo, tt.arg)
+			if (err != nil) != tt.wantErr {
+				assert.NoError(t, err)
+				return
+			}
+			if existence != tt.existence {
+				if existence {
+					t.Errorf("expect to find no escaped file but we detect one")
+				} else {
+					t.Errorf("expect to find an escaped file but we could not detect one")
+				}
+			}
+			assert.Equal(t, tt.wikiPath, newWikiPath)
+		})
+	}
+}