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PetaTest.cs
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1414 lines (1205 loc) · 52 KB
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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
namespace PetaTest
{
// Use to mark a class as a testfixture
[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
public class TestFixtureAttribute : TestBaseAttribute
{
public TestFixtureAttribute(params object[] args) : base(args)
{
}
}
// Use to mark a method as a test
[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
public class TestAttribute : TestBaseAttribute
{
public TestAttribute(params object[] args) : base(args)
{
}
}
// Base class for Test and TestFixture attributes
public abstract class TestBaseAttribute : Attribute
{
public TestBaseAttribute(params object[] Arguments)
{
this.Arguments = Arguments;
}
public object[] Arguments { get; private set; }
public string Source { get; set; }
public bool Active { get; set; }
public virtual IEnumerable<object[]> GetArguments(Type owningType, object testFixtureInstance)
{
if (Source != null) {
if (testFixtureInstance != null) {
var iter_method = owningType.GetMethod(Source, BindingFlags.Instance | BindingFlags.Public);
return (IEnumerable<object[]>)iter_method.Invoke(testFixtureInstance, null);
} else {
var iter_method = owningType.GetMethod(Source, BindingFlags.Static | BindingFlags.Public);
return (IEnumerable<object[]>)iter_method.Invoke(null, null);
}
} else {
return new object[][] { Arguments };
}
}
}
[AttributeUsage(AttributeTargets.Method)]
public class SetUpAttribute : SetUpTearDownAttributeBase
{
public SetUpAttribute() : base(true, false)
{
}
}
[AttributeUsage(AttributeTargets.Method)]
public class TearDownAttribute : SetUpTearDownAttributeBase
{
public TearDownAttribute() : base(false, false)
{
}
}
[AttributeUsage(AttributeTargets.Method)]
public class TestFixtureSetUpAttribute : SetUpTearDownAttributeBase
{
public TestFixtureSetUpAttribute() : base(true, true)
{
}
}
[AttributeUsage(AttributeTargets.Method)]
public class TestFixtureTearDownAttribute : SetUpTearDownAttributeBase
{
public TestFixtureTearDownAttribute() : base(false, true)
{
}
}
// Introducing "The Asserts" - all pretty self explanatory
[SkipInStackTrace]
public static partial class Assert
{
public static void Throw(bool Condition, Func<string> message)
{
if (!Condition)
throw new AssertionException(message());
}
public static void IsTrue(bool test)
{
Throw(test, () => "Expression is not true");
}
public static void IsFalse(bool test)
{
Throw(!test, () => "Expression is not false");
}
public static void AreSame(object a, object b)
{
Throw(object.ReferenceEquals(a, b), () => "Object references are not the same");
}
public static void AreNotSame(object a, object b)
{
Throw(!object.ReferenceEquals(a, b), () => "Object references are the same");
}
private static bool TestEqual(object a, object b)
{
if (a == null && b == null)
return true;
if (a == null || b == null)
return false;
return Object.Equals(a, b);
}
private static void AreEqual(object a, object b, Func<bool> Compare)
{
Throw(Compare(), () => string.Format("Objects are not equal\n lhs: {0}\n rhs: {1}", Utils.FormatValue(a), Utils.FormatValue(b)));
}
private static void AreNotEqual(object a, object b, Func<bool> Compare)
{
Throw(!Compare(), () => string.Format("Objects are not equal\n lhs: {0}\n rhs: {1}", Utils.FormatValue(a), Utils.FormatValue(b)));
}
public static void AreEqual(object a, object b)
{
AreEqual(a, b, () => TestEqual(a, b));
}
public static void AreNotEqual(object a, object b)
{
AreNotEqual(a, b, () => TestEqual(a, b));
}
public static void AreEqual(double a, double b, double within)
{
AreEqual(a, b, () => Math.Abs(a - b) < within);
}
public static void AreNotEqual(double a, double b, double within)
{
AreNotEqual(a, b, () => Math.Abs(a - b) < within);
}
public static void AreEqual<T>(T a, T b)
{
AreEqual(a, b, () => Object.Equals(a, b));
}
public static void AreNotEqual<T>(T a, T b)
{
AreNotEqual(a, b, () => Object.Equals(a, b));
}
public static void AreEqual(string a, string b, bool ignoreCase = false)
{
Throw(string.Compare(a, b, ignoreCase) == 0, () => {
var offset = Utils.CountCommonPrefix(a, b, ignoreCase);
var xa = Utils.FormatValue(Utils.GetStringExtract(a, offset));
var xb = Utils.FormatValue(Utils.GetStringExtract(b, offset));
return string.Format("Strings are not equal at offset {0}\n lhs: {1}\n rhs: {2}\n{3}^", offset, xa, xb, new string(' ', Utils.CountCommonPrefix(xa, xb, ignoreCase) + 7));
});
}
public static void AreEqual(string a, string b)
{
AreEqual(a, b, false);
}
public static void AreNotEqual(string a, string b, bool ignoreCase = false)
{
Throw(string.Compare(a, b, ignoreCase) != 0, () => string.Format("Strings are not equal\n lhs: {0}\n rhs: {1}", Utils.FormatValue(a), Utils.FormatValue(b)));
}
public static void IsEmpty(string val)
{
Throw(val != null && val.Length == 0, () => string.Format("String is not empty: {0}", Utils.FormatValue(val)));
}
public static void IsNotEmpty(string val)
{
Throw(val != null && val.Length != 0, () => "String is empty");
}
public static void IsNullOrEmpty(string val)
{
Throw(string.IsNullOrEmpty(val), () => string.Format("String is not empty: {0}", Utils.FormatValue(val)));
}
public static void IsNotNullOrEmpty(string val)
{
Throw(!string.IsNullOrEmpty(val), () => string.Format("String is not empty: {0}", Utils.FormatValue(val)));
}
public static void IsEmpty(System.Collections.IEnumerable collection)
{
Throw(collection != null && collection.Cast<object>().Count() == 0, () => string.Format("Collection is not empty\n Items: {0}", Utils.FormatValue(collection)));
}
public static void IsNotEmpty(System.Collections.IEnumerable collection)
{
Throw(collection != null && collection.Cast<object>().Count() != 0, () => "Collection is empty");
}
public static void Contains(System.Collections.IEnumerable collection, object item)
{
Throw(collection.Cast<object>().Contains(item), () => string.Format("Collection doesn't contain {0}\n Items: {1}", Utils.FormatValue(item), Utils.FormatValue(collection)));
}
public static void DoesNotContain(System.Collections.IEnumerable collection, object item)
{
Throw(!collection.Cast<object>().Contains(item), () => string.Format("Collection does contain {0}", Utils.FormatValue(item)));
}
public static void Contains(string str, string contains, bool ignoreCase)
{
Throw(str.IndexOf(contains, ignoreCase ? StringComparison.InvariantCultureIgnoreCase : StringComparison.InvariantCulture) >= 0,
() => string.Format("String doesn't contain substring\n expected: {0}\n found: {1}", Utils.FormatValue(contains), Utils.FormatValue(str)));
}
public static void Contains(string str, string contains)
{
Contains(str, contains, false);
}
public static void DoesNotContain(string str, string contains, bool ignoreCase = false)
{
Throw(str.IndexOf(contains, ignoreCase ? StringComparison.InvariantCultureIgnoreCase : StringComparison.InvariantCulture) < 0,
() => string.Format("String does contain substring\n didn't expect: {0}\n found: {1}", Utils.FormatValue(contains), Utils.FormatValue(str)));
}
public static void Matches(string str, string regex, RegexOptions options = RegexOptions.None)
{
Throw(new Regex(regex, options).IsMatch(str), () => string.Format("String doesn't match expression\n regex: \"{0}\"\n found: {1}", regex, Utils.FormatValue(str)));
}
public static void DoesNotMatch(string str, string regex, RegexOptions options = RegexOptions.None)
{
Throw(!(new Regex(regex, options).IsMatch(str)), () => string.Format("String matches expression\n regex: \"{0}\"\n found: {1}", regex, Utils.FormatValue(str)));
}
public static void IsNull(object val)
{
Throw(val == null, () => string.Format("Object reference is not null - {0}", Utils.FormatValue(val)));
}
public static void IsNotNull(object val)
{
Throw(val != null, () => "Object reference is null");
}
public static void Compare(object a, object b, Func<int, bool> Check, string comparison)
{
Throw(Check((a as IComparable).CompareTo(b)), () => string.Format("Comparison failed: {0} {1} {2}", Utils.FormatValue(a), comparison, Utils.FormatValue(b)));
}
public static void Greater<T>(T a, T b)
{
Compare(a, b, r => r > 0, ">");
}
public static void GreaterOrEqual<T>(T a, T b)
{
Compare(a, b, r => r >= 0, ">");
}
public static void Less<T>(T a, T b)
{
Compare(a, b, r => r < 0, ">");
}
public static void LessOrEqual<T>(T a, T b)
{
Compare(a, b, r => r <= 0, ">");
}
public static void IsInstanceOf(Type t, object o)
{
IsNotNull(o); Throw(o.GetType() == t, () => string.Format("Object type mismatch, expected {0} found {1}", t.FullName, o.GetType().FullName));
}
public static void IsNotInstanceOf(Type t, object o)
{
IsNotNull(o); Throw(o.GetType() != t, () => string.Format("Object type mismatch, should not be {0}", t.FullName));
}
public static void IsInstanceOf<T>(object o)
{
IsInstanceOf(typeof(T), o);
}
public static void IsNotInstanceOf<T>(object o)
{
IsNotInstanceOf(typeof(T), o);
}
public static void IsAssignableFrom(Type t, object o)
{
IsNotNull(o); Throw(o.GetType().IsAssignableFrom(t), () => string.Format("Object type mismatch, expected a type assignable from {0} found {1}", t.FullName, o.GetType().FullName));
}
public static void IsNotAssignableFrom(Type t, object o)
{
IsNotNull(o); Throw(!o.GetType().IsAssignableFrom(t), () => string.Format("Object type mismatch, didn't expect a type assignable from {0} found {1}", t.FullName, o.GetType().FullName));
}
public static void IsAssignableFrom<T>(object o)
{
IsAssignableFrom(typeof(T), o);
}
public static void IsNotAssignableFrom<T>(object o)
{
IsNotAssignableFrom(typeof(T), o);
}
public static void IsAssignableTo(Type t, object o)
{
IsNotNull(o); Throw(t.IsAssignableFrom(o.GetType()), () => string.Format("Object type mismatch, expected a type assignable to {0} found {1}", t.FullName, o.GetType().FullName));
}
public static void IsNotAssignableTo(Type t, object o)
{
IsNotNull(o); Throw(!t.IsAssignableFrom(o.GetType()), () => string.Format("Object type mismatch, didn't expect a type assignable to {0} found {1}", t.FullName, o.GetType().FullName));
}
public static void IsAssignableTo<T>(object o)
{
IsAssignableTo(typeof(T), o);
}
public static void IsNotAssignableTo<T>(object o)
{
IsNotAssignableTo(typeof(T), o);
}
public static Exception Throws(Type t, Action code)
{
try {
code();
} catch (Exception x) {
Throw(t.IsAssignableFrom(x.GetType()), () => string.Format("Wrong exception type caught, expected {0} received {1}", t.FullName, Utils.FormatValue(x)));
return x;
}
throw new AssertionException(string.Format("Failed to throw exception of type {0}", t.FullName));
}
public static TX Throws<TX>(Action code) where TX : Exception
{
return (TX)Throws(typeof(TX), code);
}
public static void DoesNotThrow(Action code)
{
try {
code();
} catch (Exception x) {
Throw(false, () => string.Format("Unexpected exception {0}", Utils.FormatValue(x)));
}
}
public static void ForEach<TSource>(IEnumerable<TSource> source, Action<TSource> code)
{
int index = 0;
foreach (var i in source) {
try {
code(i);
} catch (Exception x) {
throw new AssertionException(string.Format("Collection assertion failed at item {0}\n Collection: {1}\n Inner Exception: {2}", index, Utils.FormatValue(source), x.Message));
}
index++;
}
}
public static void AllItemsAreNotNull<T>(IEnumerable<T> coll)
{
int index = 0;
foreach (var i in coll) {
if (i == null) {
throw new AssertionException(string.Format("Collection has a null item at index {0}", index));
}
index++;
}
}
public static void AllItemsAreUnique<T>(IEnumerable<T> coll)
{
var list = coll.ToList();
for (int i = 0; i < list.Count; i++) {
for (int j = i + 1; j < list.Count; j++) {
if (object.Equals(list[i], list[j]))
throw new AssertionException(string.Format("Collection items are not unique\n [{0}] = {1}\n [{2}] = {3}\n", i, list[i], j, list[j]));
}
}
}
public static void AllItemsAreEqual<Ta, Tb>(IEnumerable<Ta> a, IEnumerable<Tb> b, Func<Ta, Tb, bool> CompareEqual)
{
var e1 = a.GetEnumerator();
var e2 = b.GetEnumerator();
int index = 0;
while (true) {
bool have1 = e1.MoveNext();
bool have2 = e2.MoveNext();
if (!have1 && !have2)
return;
if (!have1 || !have2 || !CompareEqual(e1.Current, e2.Current))
throw new AssertionException(string.Format("Collection are not equal at index {0}\n a[{0}] = {1}\n b[{0}] = {2}\n", index, e1.Current, e2.Current));
index++;
}
}
public static void AllItemsAreEqual<T>(IEnumerable<T> a, IEnumerable<T> b)
{
AllItemsAreEqual<T, T>(a, b, (x, y) => object.Equals(x, y));
}
public static void AllItemsAreInstancesOf(Type t, System.Collections.IEnumerable coll)
{
int index = 0;
foreach (object o in coll) {
if (o == null || o.GetType() != t) {
throw new AssertionException(string.Format("Collection item at index {0} is of the wrong type, expected {1} but found {2}", index, t.FullName, o == null ? "null" : o.GetType().FullName));
}
index++;
}
}
public static void AllItemsAreInstancesOf<T>(System.Collections.IEnumerable coll)
{
AllItemsAreInstancesOf(typeof(T), coll);
}
private static int IndexOf<Ta, Tb>(Ta Item, List<Tb> list, Func<Ta, Tb, bool> CompareEqual)
{
for (int j = 0; j < list.Count; j++) {
if (CompareEqual(Item, list[j]))
return j;
}
return -1;
}
public static void IsSubsetOf<Ta, Tb>(IEnumerable<Ta> subset, IEnumerable<Tb> superset, Func<Ta, Tb, bool> CompareEqual)
{
var list = superset.ToList();
int index = 0;
foreach (var i in subset) {
int pos = IndexOf<Ta, Tb>(i, list, CompareEqual);
if (pos < 0)
throw new AssertionException(string.Format("Collection is not a subset (check subset index {0}\n subset = {1}\n superset = {2}", index, Utils.FormatValue(subset), Utils.FormatValue(superset)));
list.RemoveAt(pos);
index++;
}
}
public static void IsSubsetOf<T>(IEnumerable<T> subset, IEnumerable<T> superset)
{
IsSubsetOf<T, T>(subset, superset, (x, y) => Object.Equals(x, y));
}
public static void IsNotSubsetOf<Ta, Tb>(IEnumerable<Ta> subset, IEnumerable<Tb> superset, Func<Ta, Tb, bool> CompareEqual)
{
var list = superset.ToList();
foreach (var i in subset) {
int pos = IndexOf<Ta, Tb>(i, list, CompareEqual);
if (pos < 0)
return;
list.RemoveAt(pos);
}
throw new AssertionException(string.Format("Collection is a subset\n subset = {0}\n superset = {1}", Utils.FormatValue(subset), Utils.FormatValue(superset)));
}
public static void IsNotSubsetOf<T>(IEnumerable<T> subset, IEnumerable<T> superset)
{
IsNotSubsetOf<T, T>(subset, superset, (x, y) => Object.Equals(x, y));
}
private static bool TestEquivalent<Ta, Tb>(IEnumerable<Ta> a, IEnumerable<Tb> b, Func<Ta, Tb, bool> CompareEqual)
{
var list = b.ToList();
foreach (var i in a) {
int pos = IndexOf(i, list, CompareEqual);
if (pos < 0)
return false;
list.RemoveAt(pos);
}
return list.Count == 0;
}
public static void AreEquivalent<Ta, Tb>(IEnumerable<Ta> a, IEnumerable<Tb> b, Func<Ta, Tb, bool> CompareEqual)
{
Throw(TestEquivalent(a, b, CompareEqual), () => string.Format("Collections are not equivalent\n lhs: {0}\n rhs: {1}", Utils.FormatValue(a), Utils.FormatValue(b)));
}
public static void AreNotEquivalent<Ta, Tb>(IEnumerable<Ta> a, IEnumerable<Tb> b, Func<Ta, Tb, bool> CompareEqual)
{
Throw(!TestEquivalent(a, b, CompareEqual), () => string.Format("Collections are not equivalent\n lhs: {0}\n rhs: {1}", Utils.FormatValue(a), Utils.FormatValue(b)));
}
public static void AreEquivalent<T>(IEnumerable<T> a, IEnumerable<T> b)
{
AreEquivalent<T, T>(a, b, (x, y) => Object.Equals(x, y));
}
public static void AreNotEquivalent<T>(IEnumerable<T> a, IEnumerable<T> b)
{
AreNotEquivalent<T, T>(a, b, (x, y) => Object.Equals(x, y));
}
}
// Runner - runs a set of tests
public class Runner
{
public Runner()
{
}
public ResultsWriter Output {
get;
set;
}
public static bool? BoolFromString(string str)
{
if (string.IsNullOrWhiteSpace(str)) return null;
str = str.ToLowerInvariant();
return (str == "yes" || str == "y" || str == "true" || str == "t" || str == "1");
}
public static int RunMain(string[] args)
{
return new Runner().Run(args);
}
// Run all test fixtures in the calling assembly - unless one or more
// marked as active in which case only those will be run
public int Run(string[] args)
{
// Parse command line args
bool? showreport = null;
bool? htmlreport = null;
bool? dirtyexit = null;
bool? runall = null;
bool? verbose = null;
string output_file = null;
foreach (var a in args) {
if (a.StartsWith("-") || a.StartsWith("/")) {
int colon_pos = a.IndexOf(":");
string sw = a.Substring(1, colon_pos < 0 ? a.Length - 1 : colon_pos - 1);
string val = colon_pos < 0 ? null : a.Substring(colon_pos + 1);
switch (sw) {
case "showreport": showreport = BoolFromString(val) ?? true; break;
case "htmlreport": htmlreport = BoolFromString(val) ?? true; break;
case "dirtyexit": dirtyexit = BoolFromString(val) ?? true; break;
case "runall": runall = BoolFromString(val) ?? true; break;
case "verbose": verbose = BoolFromString(val) ?? false; break;
case "out": output_file = val; break;
default:
Console.WriteLine("Warning: Unknown switch '{0}' ignored", a);
break;
}
}
}
if (htmlreport ?? true)
Output = new HtmlResultsWriter(showreport, output_file);
else
Output = new PlainTextResultsWriter(output_file == null ? null : new StreamWriter(output_file));
Output.Verbose = verbose ?? false;
var totalTime = Stopwatch.StartNew();
_statsStack.Clear();
_statsStack.Push(new Stats());
var old = Console.Out;
Console.SetOut(Output);
RunInternal(Assembly.GetCallingAssembly(), null, null, runall ?? false);
Console.SetOut(old);
totalTime.Stop();
Output.Complete(_statsStack.Pop(), _otherTimes.ElapsedMilliseconds, totalTime.ElapsedMilliseconds);
if (dirtyexit ?? true)
System.Diagnostics.Process.GetCurrentProcess().Kill();
return 0;
}
// Helper to create instances of test fixtures
private object CreateInstance(Type t, object[] args)
{
try {
_otherTimes.Start();
return Activator.CreateInstance(t, args);
} catch (Exception x) {
Output.WriteException(x);
Stats.Errors++;
return null;
} finally {
_otherTimes.Stop();
}
}
// Internally called to recursively run tests in an assembly, testfixture, test method etc...
private void RunInternal(object scope, object instance, object[] arguments, bool RunAll)
{
// Assembly?
var a = scope as Assembly;
if (a != null) {
StartTest(a, null);
RunAll = RunAll || !a.HasActive();
foreach (var type in a.GetTypes().Where(i => i.IsTestFixture() && (RunAll || i.HasActive())))
RunInternal(type, null, null, RunAll);
EndTest();
}
// Test Fixture class
var t = scope as Type;
if (t != null) {
if (arguments == null) {
bool runAllTestFixturesInstances = RunAll || !t.IsActive();
bool runAllTestMethods = RunAll || !t.HasActiveMethods();
foreach (TestFixtureAttribute tfa in t.GetCustomAttributes(typeof(TestFixtureAttribute), false).Where(x => runAllTestFixturesInstances || ((TestFixtureAttribute)x).Active))
foreach (var args in tfa.GetArguments(t, null))
RunInternal(t, null, args, runAllTestMethods);
} else {
StartTest(t, arguments);
var inst = CreateInstance(t, arguments);
if (inst != null)
RunInternal(null, inst, null, RunAll);
EndTest();
}
}
// Test Fixture instance
if (instance != null && instance.GetType().IsTestFixture()) {
var tf = instance;
if (scope == null) {
if (!RunSetupTeardown(instance, true, true))
return;
foreach (var m in tf.GetType().GetMethods().Where(x => RunAll || x.IsActive()))
RunInternal(m, instance, null, RunAll);
RunSetupTeardown(instance, false, true);
}
var method = scope as MethodInfo;
if (method != null) {
if (arguments == null) {
foreach (TestAttribute i in method.GetCustomAttributes(typeof(TestAttribute), false).Where(x => RunAll || ((TestAttribute)x).Active))
foreach (var args in i.GetArguments(method.DeclaringType, instance)) {
if (args.Length != method.GetParameters().Length) {
Output.WriteWarning("{0} provided in an incorrect number of arguments (expected {1} but found {2}) - skipped", i.GetType().FullName, method.GetParameters().Length, args.Length);
Stats.Warnings++;
continue;
}
RunInternal(method, instance, args, RunAll);
}
} else {
RunTest(method, tf, arguments);
}
}
}
}
// Run a single test
public void RunTest(MethodInfo Target, object instance, object[] Params)
{
StartTest(Target, Params);
var sw = new Stopwatch();
try {
if (!RunSetupTeardown(instance, true, false)) {
EndTest();
return;
}
sw.Start();
Target.Invoke(instance, Params);
Stats.Elapsed = sw.ElapsedMilliseconds;
Stats.Passed++;
} catch (Exception x) {
Stats.Elapsed = sw.ElapsedMilliseconds;
var invoc = x as TargetInvocationException;
if (invoc != null)
x = invoc.InnerException;
Output.WriteException(x);
Stats.Errors++;
}
RunSetupTeardown(instance, false, false);
EndTest();
}
private Stopwatch _otherTimes = new Stopwatch();
[SkipInStackTrace]
public bool RunSetupTeardown(object instance, bool setup, bool fixture)
{
try {
foreach (var m in instance.GetType().GetMethods().Where(x => x.GetCustomAttributes(typeof(SetUpTearDownAttributeBase), false)
.Cast<SetUpTearDownAttributeBase>().Any((SetUpTearDownAttributeBase y) => y.ForSetup == setup && y.ForFixture == fixture))) {
_otherTimes.Start();
try {
m.Invoke(instance, null);
} finally {
_otherTimes.Stop();
}
}
return true;
} catch (Exception x) {
var invoc = x as TargetInvocationException;
if (invoc != null)
x = invoc.InnerException;
Output.WriteException(x);
Stats.Errors++;
return false;
}
}
private void StartTest(object Target, object[] Params)
{
var stats = new Stats() { Target = Target };
_statsStack.Push(stats);
Output.StartTest(Target, Params);
}
private void EndTest()
{
var old = Stats;
_statsStack.Pop();
Stats.Add(old);
Output.EndTest(old);
}
private Stack<Stats> _statsStack = new Stack<Stats>();
public Stats Stats { get { return _statsStack.Peek(); } }
}
public class Stats
{
public object Target { get; set; }
public int Errors { get; set; }
public int Warnings { get; set; }
public int Passed { get; set; }
public long Elapsed { get; set; }
public void Add(Stats other)
{
Errors += other.Errors;
Warnings += other.Warnings;
Passed += other.Passed;
Elapsed += other.Elapsed;
}
}
// The exception thrown when an assertion fails
public class AssertionException : Exception
{
public AssertionException(string message) : base(message)
{
}
}
// Used to mark utility functions that throw assertion exceptions so the stack trace can be unwound to the actual place the assertion originates
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)]
public class SkipInStackTraceAttribute : Attribute
{
}
// Base class for setup/teardown attributes
public class SetUpTearDownAttributeBase : Attribute
{
public SetUpTearDownAttributeBase(bool forSetup, bool forFixture)
{
this.ForSetup = forSetup;
this.ForFixture = forFixture;
}
public bool ForSetup { get; set; }
public bool ForFixture { get; set; }
}
// A bunch of utility functions and extension methods
public static class Utils
{
public static IEnumerable<StackFrame> SimplifyStackTrace(StackTrace st)
{
foreach (var f in st.GetFrames()) {
if (f.GetMethod().GetCustomAttributes(typeof(SkipInStackTraceAttribute), false).Length != 0 ||
(f.GetMethod().DeclaringType != null && f.GetMethod().DeclaringType.GetCustomAttributes(typeof(SkipInStackTraceAttribute), false).Length != 0) ||
f.GetFileName() == null)
continue;
if (f.GetMethod().IsSpecialName | f.GetMethod().Name.StartsWith("<"))
break;
yield return f;
}
}
public static IEnumerable<Tuple<int, string>> ExtractLinesFromTextFile(string file, int line, int extra = 2)
{
try {
if (line <= extra)
line = extra + 1;
return System.IO.File.ReadAllLines(file).Skip(line - extra - 1).Take(extra * 2 + 1).Select((l, i) => new Tuple<int, string>(i + line - extra, l));
} catch (Exception) {
return new Tuple<int, string>[] { };
}
}
// Format any value for diagnostic display
public static string FormatValue(object value)
{
if (value == null)
return "null";
var str = value as string;
if (str != null) {
str = str.Replace("\"", "\\\"").Replace("\r", "\\r").Replace("\n", "\\n").Replace("\t", "\\t").Replace("\0", "\\0");
return string.Format("\"{0}\"", str);
}
if (value.GetType() == typeof(int) || value.GetType() == typeof(long) || value.GetType() == typeof(bool))
return value.ToString();
var d = value as System.Collections.IDictionary;
if (d != null)
return string.Format("{{{0}}}", string.Join(", ", d.AsDictionaryEntries().Select(de => string.Format("{{ {0}, {1} }}", FormatValue(de.Key), FormatValue(de.Value)))));
var e = value as System.Collections.IEnumerable;
if (e != null)
return string.Format("[{0}]", string.Join(", ", e.Cast<object>().Select(v => FormatValue(v))));
var x = value as Exception;
if (x != null)
return string.Format("[{0}] {1}", value.GetType().FullName, x.Message);
return string.Format("[{0}] {1}", value.GetType().FullName, value.ToString());
}
public static IEnumerable<System.Collections.DictionaryEntry> AsDictionaryEntries(this System.Collections.IDictionary dictionary)
{
foreach (var de in dictionary)
yield return (System.Collections.DictionaryEntry)de;
}
public static string FormatArguments(object[] args)
{
return string.Format("({0})", args == null ? "" : string.Join(", ", args.Select(v => FormatValue(v))));
}
// Format the name of a test target
public static string FormatTarget(object o)
{
var mb = o as MethodBase;
if (mb != null)
return "test " + mb.Name;
var t = o as Type;
if (t != null && t.IsClass)
return "testfixture " + t.Name;
var a = o as Assembly;
if (a != null)
return "assembly " + a.FullName;
return null;
}
public static int CountCommonPrefix(string a, string b, bool IgnoreCase)
{
int i = 0;
while (i < Math.Min(a.Length, b.Length) && (IgnoreCase ? (char.ToUpperInvariant(a[i]) == char.ToUpperInvariant(b[i])) : (a[i] == b[i])))
i++;
return i;
}
public static string GetStringExtract(string str, int offset)
{
if (offset > 15)
str = "..." + str.Substring(offset - 10);
if (str.Length > 30)
str = str.Substring(0, 20) + "...";
return str;
}
public static bool IsTestFixture(this Type t)
{
return t.IsClass && !t.IsAbstract && t.GetCustomAttributes(typeof(TestFixtureAttribute), false).Any();
}
public static bool IsTestMethod(this MethodInfo mi)
{
return mi.GetCustomAttributes(typeof(TestAttribute), false).Any();
}
public static bool IsActive(this ICustomAttributeProvider p)
{
return p.GetCustomAttributes(typeof(TestBaseAttribute), false).Any(a => ((TestBaseAttribute)a).Active);
}
public static bool HasActiveMethods(this Type t)
{
return t.GetMethods().Any(m => m.IsActive());
}
public static bool HasActive(this Type t)
{
return t.IsActive() || t.HasActiveMethods();
}
public static bool HasActive(this Assembly a)
{
return a.GetTypes().Any(t => t.HasActive());
}
}
// Base class for result writers
public abstract class ResultsWriter : TextWriter
{
public bool Verbose;
public abstract void StartTest(object Target, object[] Arguments);
public abstract void EndTest(Stats stats);
public virtual void Complete(Stats stats, long OtherTimes, long ActualTime)
{
}
public virtual void WriteWarning(string str, params object[] args)
{
WriteLine(str, args);
}
public virtual void WriteError(string str, params object[] args)
{
WriteLine(str, args);
}
public abstract void WriteException(Exception x);
}
// Plain text results writer (aka console output)
public class PlainTextResultsWriter : ResultsWriter
{
private TextWriter target;
public PlainTextResultsWriter(TextWriter target = null)
{
this.target = target == null ? Console.Out : target;
}
public override void StartTest(object Target, object[] Arguments)
{
WriteIndented(string.Format("{0}{1}\n", Utils.FormatTarget(Target), Utils.FormatArguments(Arguments)));
_indentDepth += (Target as MethodBase) != null ? 2 : 1;
}
public override void EndTest(Stats stats)
{
_indentDepth -= (stats.Target as MethodBase) != null ? 2 : 1;
}
public override void Complete(Stats stats, long OtherTimes, long ActualTime)
{
bool Success = stats.Errors == 0 && stats.Warnings == 0;
var delim = new string(Success ? '-' : '*', 40);
target.WriteLine("\nTest cases: {0,10:#,##0}ms\nSetup/teardown: {1,10:#,##0}ms\nTest framework: {2,10:#,##0}ms",
stats.Elapsed, OtherTimes, ActualTime - (stats.Elapsed + OtherTimes));
if (Success)
target.WriteLine("\n{0}\nAll {1} tests passed\n{0}\n", delim, stats.Passed, stats.Elapsed);
else
target.WriteLine("\n{0}\n{1} Errors, {2} Warnings, {3} passed\n{0}\n", delim, stats.Errors, stats.Warnings, stats.Passed);
target.Flush();
}
public override void Write(char value)
{
Write(value.ToString());
}
public override void Write(char[] buffer, int index, int count)
{