forked from Mirrors/openclonk
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/*
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* OpenClonk, http://www.openclonk.org
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*
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* Copyright (c) 2015-2016, The OpenClonk Team and contributors
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*
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* Distributed under the terms of the ISC license; see accompanying file
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* "COPYING" for details.
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*
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* "Clonk" is a registered trademark of Matthes Bender, used with permission.
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* See accompanying file "TRADEMARK" for details.
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*
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* To redistribute this file separately, substitute the full license texts
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* for the above references.
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*/
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// Testing C4Aul behaviour.
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#include "C4Include.h"
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#include "AulTest.h"
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#include "script/C4Aul.h"
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class AulMathTest : public AulTest
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{};
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TEST_F(AulMathTest, Addition)
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{
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// Adding 0 to a value should return the same value.
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EXPECT_EQ(C4VInt(0), RunExpr("0 + 0"));
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EXPECT_EQ(C4VINT_MAX, RunExpr("2147483647 + 0"));
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EXPECT_EQ(C4VINT_MAX, RunExpr("0 + 2147483647"));
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EXPECT_EQ(C4VINT_MIN, RunExpr("-2147483648 + 0"));
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EXPECT_EQ(C4VINT_MIN, RunExpr("0 + -2147483648"));
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EXPECT_EQ(C4VInt(1078530011), RunExpr("1078530011 + 0"));
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EXPECT_EQ(C4VInt(1078530011), RunExpr("0 + 1078530011"));
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EXPECT_EQ(C4VInt(1068827891), RunExpr("1068827891 + 0"));
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EXPECT_EQ(C4VInt(1068827891), RunExpr("0 + 1068827891"));
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}
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TEST_F(AulMathTest, Division)
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{
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// Dividing a value by 0 should fail.
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EXPECT_THROW(RunExpr("1 / 0"), C4AulExecError);
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// Dividing C4VINT_MIN by -1 should fail.
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EXPECT_THROW(RunExpr("-2147483648 / -1"), C4AulExecError);
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// Dividing C4VINT_MIN by 1 should return C4VINT_MIN.
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EXPECT_EQ(C4VINT_MIN, RunExpr("-2147483648 / 1"));
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}
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TEST_F(AulMathTest, Bug1389)
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{
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// 0001389: Aul integer overflow results in strange numbers on 64 bit
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// machines
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// "Strange numbers" shall mean numbers that are impossible to express in
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// C4Script as an integer literal. In particular, in these cases, the
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// high dword of the numbers, which is not exposed to C4Script, is not
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// guaranteed to be zero. Therefore, straight comparison of these numbers
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// will result in unexpected results.
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EXPECT_EQ(C4VINT_MIN, RunExpr("2147483647 + 1"));
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EXPECT_EQ(C4VINT_MAX, RunExpr("-2147483648 - 1"));
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// x ± 1 ± 1 is handled differently from x ± 2, yet the result should be
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// the same.
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EXPECT_EQ(C4Value(true), RunExpr("2147483647 + 1 + 1 == 2147483647 + 2"));
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EXPECT_EQ(C4Value(true), RunExpr("-2147483648 - 1 - 1 == -2147483648 - 2"));
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}
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