Artifact 09cc57fcd7c969ca711aeb927df90de64b1972bd
/**
* Authors: k.inaba
* License: NYSL 0.9982 http://www.kmonos.net/nysl/
*
* Unittest helpers.
*/
module tricks.test;
import std.conv : to;
import core.exception;
/// Unittest helper that asserts an expression must throw something
void assert_throw(ExceptionType, T, string fn=__FILE__, size_t ln=__LINE__)(lazy T t, string msg="")
{
try
{ t(); }
catch(ExceptionType)
{ return; }
catch(Throwable e)
{ onAssertErrorMsg(fn, ln, msg.length ? msg : "bad exception\n >> "~e.toString()); }
onAssertErrorMsg(fn, ln, msg.length ? msg : "not thrown");
}
/// Unittest helper that asserts an expression must not throw anything
auto assert_nothrow(T, string fn=__FILE__, size_t ln=__LINE__)(lazy T t, string msg="")
{
try
{ return t(); }
catch(Throwable e)
{ onAssertErrorMsg(fn, ln, msg.length ? msg : "bad exception\n >> "~e.toString()); }
assert(false);
}
unittest
{
auto error = {throw new Error("hello");};
auto nothing = (){};
auto assertError = {assert(0);};
assert_nothrow ( assert_nothrow(nothing()) );
assert_throw!AssertError( assert_nothrow(error()) );
assert_throw!AssertError( assert_nothrow(assertError()) );
assert_nothrow ( assert_throw!Error(error()) );
assert_throw!AssertError( assert_throw!Error(nothing()) );
assert_nothrow ( assert_throw!Error(assertError()) );
assert_throw!AssertError( assert_throw!AssertError(error()) );
}
/// Unittest helpers asserting two values are in some relation ==, !=, <, <=, >, >=
template assertOp(string op)
{
void assertOp(A, B, string fn=__FILE__, size_t ln=__LINE__)(A a, B b, string msg="")
{
try
{ if( mixin("a"~op~"b") ) return; }
catch(Throwable e)
{ onAssertErrorMsg(fn, ln, msg.length ? msg : "exception ["~e.toString()~"]"); }
onAssertErrorMsg(fn, ln, msg.length ? msg : to!string(a)~" !"~op~" "~to!string(b));
}
}
alias assertOp!(`==`) assert_eq;
alias assertOp!(`!=`) assert_ne;
alias assertOp!(`<`) assert_lt;
alias assertOp!(`<=`) assert_le;
alias assertOp!(`>`) assert_gt;
alias assertOp!(`>=`) assert_ge;
unittest
{
assert_nothrow( assert_eq(1, 1) );
assert_nothrow( assert_ne(1, 0) );
assert_nothrow( assert_lt(0, 1) );
assert_nothrow( assert_le(0, 1) );
assert_nothrow( assert_le(0, 0) );
assert_nothrow( assert_gt(1, 0) );
assert_nothrow( assert_ge(1, 0) );
assert_nothrow( assert_ge(0, 0) );
assert_throw!AssertError( assert_eq(1, 0) );
assert_throw!AssertError( assert_ne(1, 1) );
assert_throw!AssertError( assert_lt(1, 1) );
assert_throw!AssertError( assert_lt(1, 0) );
assert_throw!AssertError( assert_le(1, 0) );
assert_throw!AssertError( assert_gt(0, 0) );
assert_throw!AssertError( assert_gt(0, 1) );
assert_throw!AssertError( assert_ge(0, 1) );
class Temp { bool opEquals(int x){return x/x==x;} }
assert_throw!AssertError( assert_eq(new Temp, 0) );
assert_nothrow ( assert_eq(new Temp, 1) );
assert_throw!AssertError( assert_eq(new Temp, 2) );
}
/* [Todo] is there any way to clearnly implement "assert_compiles" and "assert_not_compile"? */