public void ShouldResolveRecursiveCaseStatement()
{
//Arrange
string rawTsql = " CASE " +
" WHEN someValue > anotherValue THEN " +
" CASE " +
" WHEN NullIf(val_01,0) IS NULL THEN NULL " +
" WHEN NullIf(val_02,0) IS NULL THEN Null " +
" WHEN(100 / val_02 * val_01) <= 100 THEN 'Green' " +
" WHEN 100 + 25 <= 125 THEN 'Yellow'" +
" ELSE 'Red' " +
" END " +
" ELSE " +
" CASE " +
" WHEN NULLIF(val_03, 0) IS NULL THEN NULL " +
" WHEN NullIf(val_02,0) IS NULL THEN NULL " +
" WHEN(100 / val_02 * val_03) <= 100 THEN 'Green' " +
" WHEN(100 / val_02 * val_03) <= 125 THEN 'Yellow'" +
" ELSE 'Red' " +
" END " +
" END";
IExpressionResolver resolver = new CaseStatementResolver();
int fileIndex = 0;
CompilerContext context = new CompilerContext("xUnit", "stdserver", "stdDatabase", true);
ReadOnlySpan <TSQLToken> tokens = TSQLTokenizer.ParseTokens(rawTsql).ToArray();
//Act
Expression expression = resolver.Resolve(tokens, ref fileIndex, context);
//Assert
Assert.Equal(tokens.Length, fileIndex);
}
public void ShouldResolveSearchCaseStatement()
{
//Arrange
string rawTsql = "case when GL.DocumentId is null then 'string' else dbo.GL.DocumentID end";
IExpressionResolver resolver = new CaseStatementResolver();
int fileIndex = 0;
CompilerContext context = new CompilerContext("xUnit", "stdserver", "stdDatabase", true);
ReadOnlySpan <TSQLToken> tokens = TSQLTokenizer.ParseTokens(rawTsql).ToArray();
//Act
Expression expression = resolver.Resolve(tokens, ref fileIndex, context);
//Assert
Assert.Equal(tokens.Length, fileIndex);
Assert.Equal("dbo.GL.DocumentID", expression.Name);
}
public void ShouldResolveSimpleCaseStatement()
{
//Arrange
string rawTsql = "CASE someTestcolumn" +
" WHEN 'string_01' THEN COL_13 " +
" WHEN 'string_02' THEN [dbo].[epic Table].COL_14 " +
" END";
IExpressionResolver resolver = new CaseStatementResolver();
int fileIndex = 0;
CompilerContext context = new CompilerContext("xUnit", "stdserver", "stdDatabase", true);
ReadOnlySpan <TSQLToken> tokens = TSQLTokenizer.ParseTokens(rawTsql).ToArray();
//Act
Expression expression = resolver.Resolve(tokens, ref fileIndex, context);
//Assert
Assert.Equal(tokens.Length, fileIndex);
Assert.Equal(2, expression.ChildExpressions.Count);
Assert.Equal("CASE", expression.Name);
Assert.Equal("COL_13", expression.ChildExpressions[0].Name);
Assert.Equal("dbo.epic Table.COL_14", expression.ChildExpressions[1].Name);
}