Merge pull request #15 from PerfectXL/dataset_tests

Adds tests for EUSES and Enron data set

Author: dhoepelman

src/XLParser.Tests/DatasetTests.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using Irony.Parsing;
+
+namespace XLParser.Tests
+{
+    [TestClass]
+    // Visual studio standard datasources where tried for this class, but it was found very slow
+    public class DatasetTests
+    {
+        public TestContext TestContext { get; set; }
+
+        private const int MaxParseErrors = 10;
+
+        [TestMethod]
+        [TestCategory("Slow")]
+        // Uncomment this to execute the test
+        //[Ignore]
+        public void EnronFormulasParseTest()
+        {
+            parseCSVDataSet("data/enron/formulas.csv", "data/enron/knownfails.csv");
+        }
+
+        [TestMethod]
+        [TestCategory("Slow")]
+        // Uncomment this to execute the test
+        //[Ignore]
+        public void EusesFormulasParseTest()
+        {
+            parseCSVDataSet("data/euses/formulas.csv", "data/euses/knownfails.csv");
+        }
+
+        private void parseCSVDataSet(string filename, string knownfailsfile = null)
+        {
+            ISet<string> knownfails = new HashSet<string>(readFormulaCSV(knownfailsfile));
+            int parseErrors = 0;
+            var LOCK = new object();
+
+            Parallel.ForEach(readFormulaCSV(filename), (formula, control, linenr) =>
+            {
+                if (parseErrors > MaxParseErrors)
+                {
+                    control.Stop();
+                    return;
+                }
+                try
+                {
+                    ExcelFormulaParser.Parse(formula);
+                }
+                catch (ArgumentException e)
+                {
+                    if (!knownfails.Contains(formula))
+                    {
+                        lock (LOCK)
+                        {
+                            TestContext.WriteLine(String.Format("Failed parsing line {0} <<{1}>>", linenr, formula));
+                            parseErrors++;
+                        }
+                    }
+                }
+            });
+            if (parseErrors > 0) Assert.Fail("Parse Errors on file " + filename);
+        }
+
+        private static IEnumerable<string> readFormulaCSV(string f)
+        {
+            if (f == null) return Enumerable.Empty<string>();
+            // using ReadAllLines instead of ReadLines shaves about 10s of the enron test, so it's worth the memory usage.
+            return File.ReadLines(f)
+                .Where(line => line != "")
+                .Select(unQuote)
+                ;
+        }
+
+        private static string unQuote(string line)
+        {
+            return line.Length > 0 && line[0] == '"' ?
+                    line.Substring(1, line.Length - 2).Replace("\"\"", "\"")
+                  : line;
+        }
+    }
+}

src/XLParser.Tests/XLParser.Tests.csproj

@@ -47,6 +47,7 @@
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
+    <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
@@ -60,13 +61,28 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="ParserTests.cs" />
     <Compile Include="PrintTests.cs" />
+    <Compile Include="DatasetTests.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\XLParser\XLParser.csproj">
       <Project>{fb048d20-29fd-4d2c-a336-59f93f9a68f3}</Project>
       <Name>XLParser</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="data\enron\formulas.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="data\enron\knownfails.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="data\euses\formulas.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="data\euses\knownfails.csv">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.