public void Expression_CustomFunction_Test()
{
var sut = new ExpressionManager();
sut.Initialize(new Dictionary <string, string>()
{
{ "expr1", "CustomFunc1(F4)" }
}, @"
Function CustomFunc1(dt)
CustomFunc1 = Month(dt) + Day(dt) + Year(dt)
End Function
");
var dt = GetTestDataTable();
sut.EvaluateExpressions(dt);
dt.Columns.Count.Should().Be(4 + 1);
dt.Rows[0]["expr1"].Should().Be("2021");
}
public void Expression_Test_Corner_Cases()
{
var sut = new ExpressionManager();
sut.Initialize(new Dictionary <string, string>()
{
});
var dt = GetTestDataTable();
sut.EvaluateExpressions(dt);
dt.Columns.Count.Should().Be(4);
var sut2 = new ExpressionManager();
Action action1 = () => { sut.Dispose(); }; // Initialized
Action action2 = () => { sut2.Dispose(); }; // Not Initialized
action1.ShouldNotThrow();
action2.ShouldNotThrow();
}
public void Expression_Test()
{
var sut = new ExpressionManager();
sut.Initialize(new Dictionary <string, string>()
{
{ "expr1", "\"Hello\" + F1 + \"World\"" },
{ "expr2", "UCase(Left(F1, 3)) + LCase(Mid(F1, 4))" },
{ "expr3", "Sqr(F2)+Log(Exp(F3))" },
{ "expr4", "Month(F4)+Day(F4)+Year(F4)" }
});
var dt = GetTestDataTable();
sut.EvaluateExpressions(dt);
dt.Columns.Count.Should().Be(4 + 4);
dt.Rows[0]["expr1"].Should().Be("HelloabcDEFGHWorld");
dt.Rows[0]["expr2"].Should().Be("ABCdefgh");
dt.Rows[0]["expr3"].Should().Be("14");
dt.Rows[0]["expr4"].Should().Be("2021");
}