Question

我得到AssertFailedException，但看不到，为什么会这样。

CollectionAssert.AreEquivalent失败。预期的收藏包含1次＆lt; FileExporter.Document＆gt;的出现次数。实际上集合包含0次出现。

代码：

[TestMethod]
public void GetDocumentsTest()
{
    List<Document> testDocuments = new List<Document>() {
      new Document(){ Path = "TestDoc1", Language = "DEU" }
    , new Document(){ Path = "TestDoc2", Language = "ENG" }
    };

    string sqlCommand = "SELECT Path, LanguageCode FROM Document WITH(NOLOCK) ORDER BY Id";
    string connectionString = "Data Source=|DataDirectory|\\Documents.sdf;Persist Security Info=False;";
    List<Document> documents = new DataAccessManagerTestMockup().GetDocuments(sqlCommand, connectionString);
// Sql gets same documents with same path and same language

    CollectionAssert.AreEquivalent(testDocuments, documents);
}

更新

namespace FileExporter
{
    public class Document
    {
        public string Path { get; set; }

        public string Language { get; set; }

        public bool Equals(Document y)
        {
            if (object.ReferenceEquals(this, y))
                return true;
            if (object.ReferenceEquals(this, null) || object.ReferenceEquals(y, null))
                return false;
            return this.Path == y.Path && this.Language == y.Language;
        }
    }
}

更新2：

我想我不应该在科隆（驾驶3小时）过夜并尝试编码。同事刚刚说我应该重写equals并使用一个对象而不是Document。

namespace FileExporter
{
    public class Document
    {
        public string Path { get; set; }

        public string Language { get; set; }

        public override bool Equals(object y)
        {
            if (object.ReferenceEquals(this, y))
                return true;
            if (object.ReferenceEquals(this, null) || object.ReferenceEquals(y, null))
                return false;
            return this.Path == ((Document) y).Path && this.Language == ((Document) y).Language;
        }
        public override int GetHashCode()
        {
        if (this == null)
            return 0;
        int hashCodePath = this.Path == null ? 0 : this.Path.GetHashCode();
        int hashCodeLanguage = this.Language == null ? 0 : this.Language.GetHashCode();

        return hashCodePath ^ hashCodeLanguage;

        }
}

Answer 1

为了使此成功，您的Document类需要实现（覆盖）Equals()

您可以轻松验证：

var d1 = new Document(){ Path = "TestDoc1", Language = "DEU" };
var d2 = new Document(){ Path = "TestDoc1", Language = "DEU" };

Assert.AreEqual(d1, d2);

CollectionAssert.AreEquivalent中的AssertFailedException（两个列表都填充相同的内容）

1 个答案: