public void Should_Return_The_Same_Alias_For_The_Same_Table_Name()
{
var generator = new TableAliasGenerator();
Assert.AreEqual("e", generator.GenerateAlias("Entity"));
Assert.AreEqual("e", generator.GenerateAlias("Entity"));
}
public ISubquerySource AsSource()
{
if (string.IsNullOrEmpty(alias))
{
Alias(TableAliasGenerator.GenerateTableAlias());
}
return(new SubquerySource(select, alias));
}
public void ShouldGenerateDeterministicAliases()
{
var firstGenerator = new TableAliasGenerator();
var secondGenerator = new TableAliasGenerator();
foreach (var _ in Enumerable.Range(0, 100))
{
firstGenerator.GenerateTableAlias().Should().BeEquivalentTo(secondGenerator.GenerateTableAlias());
}
}
public void Should_Return_The_Different_Aliases_For_Different_Table_Names_Starting_The_Same()
{
var generator = new TableAliasGenerator();
Assert.AreEqual("e", generator.GenerateAlias("Entity"));
Assert.AreEqual("e1", generator.GenerateAlias("Entity_Another"));
Assert.AreEqual("e2", generator.GenerateAlias("Entity_Another_More"));
}
public void Should_Return_The_Different_Aliases_For_Different_Table_Names()
{
var generator = new TableAliasGenerator();
Assert.AreEqual("e", generator.GenerateAlias("Entity"));
Assert.AreEqual("a", generator.GenerateAlias("AnotherEntity"));
Assert.AreEqual("o", generator.GenerateAlias("OtherEntity"));
}
public void ShouldGenerateUniqueAliases()
{
var results = new HashSet <string>();
var target = new TableAliasGenerator();
for (int i = 0; i < 100; i++)
{
var actual = target.GenerateTableAlias();
results.Should().NotContain(actual);
results.Add(actual);
}
}
AliasedTableSource CreateAliasedTableSource()
{
return(new AliasedTableSource(new SimpleTableSource(tableOrViewName, schemaName), alias ?? TableAliasGenerator.GenerateTableAlias(tableOrViewName)));
}
