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120 lines
2.5 KiB
C++
120 lines
2.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2015 Microsoft Corporation. All rights reserved.
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//
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// This code is licensed under the MIT License (MIT).
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include <catch/catch.hpp> // for AssertionHandler, StringRef, CHECK, CHECK...
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#include <gsl/gsl_assert> // for fail_fast (ptr only), Ensures, Expects
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using namespace gsl;
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int f(int i)
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{
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Expects(i > 0 && i < 10);
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return i;
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}
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TEST_CASE("expects")
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{
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CHECK(f(2) == 2);
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CHECK_THROWS_AS(f(10), fail_fast);
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}
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int g(int i)
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{
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Ensures(i > 0 && i < 10);
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i++;
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return i;
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}
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int g2(int i)
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{
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Ensures(i > 0 && i < 10);
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Ensures(i == 4);
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i++;
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return i;
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}
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int g3(int i)
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{
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AlwaysEnsures(i > 0 && i < 10);
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AlwaysEnsures(i == 4);
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i++;
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return i;
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}
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TEST_CASE("ensures")
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{
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CHECK(g(2) == 3);
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CHECK_THROWS_AS(g(9), fail_fast);
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CHECK(g2(3) == 4);
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CHECK_THROWS_AS(g2(4), fail_fast);
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CHECK_THROWS_AS(g2(9), fail_fast);
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CHECK(g3(3) == 4);
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CHECK_THROWS_AS(g3(4), fail_fast);
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// g3(9); // should terminate
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}
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int h(int i, int j)
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{
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Maintains(i > 0 && i < 10);
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i += j;
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return i;
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}
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int h2(int i, int j)
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{
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Maintains(i < 3);
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Maintains(J > 7);
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i++;
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j--;
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return i + j;
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}
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int h3(int i, int j)
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{
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AlwaysMaintains(i < 3);
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AlwaysMaintains(j > 7);
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i++;
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j--;
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return i + j;
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}
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TEST_CASE("maintains")
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{
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CHECK(h(2, 4) == 6);
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CHECK_THROWS_AS(h(9,1), fail_fast);
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CHECK_THROWS_AS(h(1,-1), fail_fast);
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CHECK_THROWS_AS(h(0,2), fail_fast);
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CHECK(h2(1,9) == 10);
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CHECK_THROWS_AS(h2(1,7), fail_fast);
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CHECK_THROWS_AS(h2(1,8), fail_fast);
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CHECK_THROWS_AS(h2(3,9), fail_fast);
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CHECK_THROWS_AS(h2(2,9), fail_fast);
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CHECK_THROWS_AS(h2(2,8), fail_fast);
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CHECK(h3(1,9) == 10);
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CHECK_THROWS_AS(h3(1,7), fail_fast);
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CHECK_THROWS_AS(h3(1,8), fail_fast);
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CHECK_THROWS_AS(h3(3,9), fail_fast);
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CHECK_THROWS_AS(h3(2,9), fail_fast);
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// h3(2,8); // should terminate
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}
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