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基于 D 2.0 編譯時反射的單元測試框架

2010-01-13 22:49:47 作者: 來源:

一個模仿 Ruby Test::Unit 的 Quick & Dirty 單元測試框架，托 __traits 的福，看起來已經有那么點意思了。提取行號在目前還沒法實現，估計等 macro 出來就能解決這個問題。

SVN里的最新版在下面的鏈接處：
dotmars.googlecode.com/svn/trunk/sandbox/2.0/test.d

D2.0 代碼

/**
A D 2.0 unit test framework inspired by Ruby's Unit::Test
// Written in the D programming language 2.0
Authors: Wei Li (oldrev@gmail.com)
License: BSD
Copyright: Copyright (C) 2007 by Wei Li.
*/
import std.stdio;
////////////////////////////////////////////////////////////////////////////////
struct Failure
{
string location;
string message;
string testName;
}
////////////////////////////////////////////////////////////////////////////////
struct Error
{
Exception exception;
string testName;
}
////////////////////////////////////////////////////////////////////////////////
class TestResult
{
private Error[] m_errors;
private Failure[] m_fails;
private int m_runCount;
private int m_assertionCount;
private int m_testCount;
const(Error)[] errors() {
return m_errors;
}
const(Failure)[] failures() {
return m_fails;
}
void addFailure(const string loc, const string msg, const string name)
{
Failure f;
with(f) {
location = loc;
message = msg;
testName = name;
}
m_fails ~= f;
}
void addError(Exception ex, const string name)
{
Error e;
with(e) {
exception = ex;
testName = name;
}
m_errors ~= e;
}
void addAssertion() {
m_assertionCount++;
}
void addTest() {
m_testCount++;
}
void addRun() {
m_runCount++;
}
bool hasPassed() {
return m_errors.length == 0 && m_fails.length == 0;
}
int errorCount() {
return cast(int)m_errors.length;
}
int failureCount() {
return cast(int)m_fails.length;
}
int runCount() {
return m_runCount;
}
int testCount() {
return m_testCount;
}
int assertionCount() {
return m_assertionCount;
}
}
////////////////////////////////////////////////////////////////////////////////
abstract class TestBase
{
protected this() {
}
abstract void run(TestResult result);
abstract const bool isRunning();
}
////////////////////////////////////////////////////////////////////////////////
abstract class TestCase(Subclass) : TestBase
{
alias typeof(this) SelfType;
struct TestMethod
{
string name;
void delegate() method;
}
public const string name = Subclass.classinfo.name;
private TestResult m_result;
private TestMethod[] m_methods;
private size_t m_currentMethod;
private bool m_isFailed;
private bool m_running = false;
this() {
}
private static const(string) ctfMakeString(T)()
{
string ret;
foreach(str; __traits(allMembers, T)) {
if(str[0..4] == "test")
ret ~= `addTestMethod(TestMethod("` ~ str ~ `", &sc.` ~ str ~ `)); ` ~ "\n";
}
return ret;
}
private void initial(const Subclass sc) {
mixin(ctfMakeString!(Subclass)());
}
void addTestMethod(TestMethod tm) {
m_methods ~= tm;
}
static Subclass createChild() {
auto o = new Subclass;
o.initial(o);
return o;
}
void setup() {}
void teardown() {}
override const bool isRunning() {
return m_running;
}
override void run(TestResult result)
{
m_result = result;
m_result.addRun();
foreach(size_t i, TestMethod tm; m_methods)
{
m_isFailed = false;
m_currentMethod = i;
m_result.addTest();
setup();
m_running = true;
try {
tm.method();
}
catch(Exception ex) {
m_result.addError(ex, currentMethodName);
}
finally {
m_running = false;
}
teardown();
}
}
const string currentMethodName() {
return name ~ "." ~ m_methods[m_currentMethod].name;
}
private void addFailure(const string message = null)
{
if(!m_isFailed)
{
m_isFailed = true;
m_result.addFailure(name, message, currentMethodName);
}
}
//////////////////////////// Assertion Functions ///////////////////////////
void assertTrue(bool x, const string message = null)
{
m_result.addAssertion();
if(!x) {
addFailure(message);
}
}
void assertNull(T)(const T value, const string message = null)
{
m_result.addAssertion();
if(value !is null) {
addFailure(message);
}
}
void assertNotNull(T)(const T value, const string message = null)
{
m_result.addAssertion();
if(value is null) {
addFailure(message);
}
}
void assertEqual(T)(const T expected, const T actual, const string message = null)
{
m_result.addAssertion();
if(expected != actual) {
addFailure(message);
}
}
void assertNotEqual(T)(const T expected, const T actual, const T delta, const string message = null)
{
m_result.addAssertion();
if(expected == actual) {
addFailure(message);
}
}
void flunk(const string message = "Flunked")
{
m_result.addAssertion();
addFailure(message);
}
}
////////////////////////////////////////////////////////////////////////////////
class TestSuit(Subclass, Tests...) : TestBase
{
alias typeof(this) SelfType;
public const string name = Subclass.classinfo.name;
private TestBase[] m_tests;
private bool m_running = false;
this()
{
m_running = false;
foreach(T; Tests)
{
T test = T.createChild();
addTest(test);
}
}
static Subclass createChild() {
return new Subclass;
}
const(TestBase)[] tests() {
return m_tests;
}
void addTest(TestBase tb)
in {
assert(tb !is null);
}
body {
m_tests ~= tb;
}
const bool empty() {
return Tests.length == 0;
}
override const bool isRunning() {
return m_running;
}
override void run(TestResult result) {
m_running = true;
foreach(test; m_tests) {
test.run(result);
}
m_running = false;
}
}
static class ConsoleRunner
{
static void showFailures(TestResult tr)
{
foreach(fail; tr.failures)
{
writefln("Failure: %s [%s]", fail.testName, fail.location);
writefln("%s", fail.message);
writefln();
}
}
static void showErrors(TestResult tr)
{
foreach(err; tr.errors)
{
writefln("Error: s", err.testName);
writefln("%s", err.exception.msg);
writefln();
}
}
static void run(TestBase tb)
{
auto result = new TestResult;
writefln("Started...");
tb.run(result);
writefln("Finished\n");
showErrors(result);
showFailures(result);
writefln();
writefln("%d tests, %d assertions, %d failures, %d errors",
result.testCount, result.assertionCount, result.failureCount, result.errorCount);
if(result.hasPassed)
writefln("Everything is OK.");
}
}
////////////////////////////////////////////////////////////////////////////////
class MyTestCase : TestCase!(MyTestCase)
{
void testOne() {
assertTrue(false, "A stupid assertion");
assertTrue(true);
assertTrue(true);
throw new Exception("Exception raised");
}
void testTwo() {
assertTrue(true);
}
void testThree() {
assertTrue(true);
}
}
class MyTestCase2 : TestCase!(MyTestCase2)
{
void testOne() {
assertTrue(true);
}
void testTwo() {
assertTrue(true);
}
void testThree() {
assertTrue(false, "Yet another stupid assertion");
}
}
class MyTestCase3 : TestCase!(MyTestCase3)
{
void testMethod() {
assertTrue(true);
}
}
class MyTestSuit1: TestSuit!(MyTestSuit1, MyTestCase)
{
}
class MyTestSuit2: TestSuit!(MyTestSuit2, MyTestCase2)
{
}
class MyTestSuit3: TestSuit!(MyTestSuit3, MyTestSuit1, MyTestSuit2, MyTestCase3)
{
}
void main()
{
auto ts = new MyTestSuit3;
ConsoleRunner.run(ts);
}

運行結果

oldrev@ubuntu:~/work/dotmars/sandbox/2.0$ dmd2 -run test.d
Started...
Finished

Error: stest.MyTestCase.testOne
Exception raised

Failure: test.MyTestCase.testOne [test.MyTestCase]
A stupid assertion

Failure: test.MyTestCase2.testThree [test.MyTestCase2]
Yet another stupid assertion

7 tests, 9 assertions, 2 failures, 1 errors

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