{"id":674,"date":"2015-10-27T11:14:59","date_gmt":"2015-10-27T11:14:59","guid":{"rendered":"http:\/\/coolt.ch\/notizen\/?p=674"},"modified":"2015-10-27T11:14:59","modified_gmt":"2015-10-27T11:14:59","slug":"unit-testing-with-catch","status":"publish","type":"post","link":"https:\/\/coolt.ch\/notizen\/unit-testing-with-catch\/","title":{"rendered":"Unit Testing with Catch"},"content":{"rendered":"

Es gibt CATCH<\/a>, das Testing f\u00fcr C++ erm\u00f6glicht. Es gibt einen Blogeintrag<\/a>, der den Einsatz von CATCH auf hohem Niveau beschreibt. Zum Starten ist das Tutorial <\/a>sehr gut.<\/p>\n

#define<\/span> CATCH_CONFIG_MAIN<\/span>  \/\/ This tells Catch to provide a main() - only do this in one cpp file<\/span>\r\n#include<\/span> \"<\/span>catch.hpp\"<\/span><\/span>\r\n\r\nunsigned<\/span> int<\/span> Factorial<\/span>( unsigned<\/span> int<\/span> number ) {\r\n    return<\/span> number <= 1<\/span> ? number : Factorial<\/span>(number-1<\/span>)*number;\r\n}\r\n\r\nTEST_CASE<\/span>( \"<\/span>Factorials are computed\"<\/span><\/span>, \"<\/span>[factorial]\"<\/span><\/span> ) {\r\n    REQUIRE<\/span>( Factorial<\/span>(1<\/span>) == 1<\/span> );\r\n    REQUIRE<\/span>( Factorial<\/span>(2<\/span>) == 2<\/span> );\r\n    REQUIRE<\/span>( Factorial<\/span>(3<\/span>) == 6<\/span> );\r\n    REQUIRE<\/span>( Factorial<\/span>(10<\/span>) == 3628800<\/span> );\r\n}<\/pre>\n
Catch innerhalb eines Files einbauen und ausf\u00fchren<\/strong><\/p>\n
1. Catch als Header in File einbinden<\/p>\n
#define CATCH_CONFIG_RUNNER  \r\n#include \"catch.hpp\"<\/pre>\n
2. Funktion, die getetst werden will<\/p>\n
double calculate<\/strong>(string calculation) {\r\n    double result = 0.0;\r\n    ts.set(calculation);\r\n    result = expression();\r\n    return result;\r\n}<\/pre>\n
3. Testf\u00e4lle aufstellen<\/p>\n
TEST_CASE( \"r\", \"[digit]\" ) {\r\n    REQUIRE(calculate(\"4\")<\/strong> == 4);\r\n    REQUIRE(calculate(\"6\") == 6);\r\n    REQUIRE(calculate(\"4+2\") == 6);\r\n    REQUIRE(calculate(\"4+2+2\") == 8);\r\n    REQUIRE(calculate(\"4+2+2+4+2+2+1\") == 17);\r\n    REQUIRE(calculate(\"4-2\") == 2);\r\n    REQUIRE(calculate(\"8-2\") == 6);\r\n    REQUIRE(calculate(\"8-2-2\") == 4);\r\n    REQUIRE(calculate(\"3*2\") == 6);\r\n    REQUIRE(calculate(\"3*3\") == 9);\r\n    REQUIRE(calculate(\"3*2*3\") == 18);\r\n    REQUIRE(calculate(\"3+2*4\") == 11);\r\n    REQUIRE(calculate(\"3*2+4\") == 10);\r\n    REQUIRE(calculate(\"4 + 2\") == 6);\r\n    REQUIRE(calculate(\"10 + 2\") == 12);\r\n    REQUIRE(calculate(\"10 + 123\") == 133);\r\n    REQUIRE(calculate(\"-4 + 5\") == 1);\r\n    REQUIRE(calculate(\"-100 + 5\") == -95);\r\n    REQUIRE(calculate(\"(4 + 5)*2\") == 18);\r\n    REQUIRE(calculate(\"3+(-4 * 5)\") == -17);\r\n    REQUIRE(calculate(\"1.5 * 2\") == 3);\r\n}<\/pre>\n
Am Ende des Files folgend die Testf\u00e4lle.<\/p>\n
4. Datei kompilieren
\n5. Ausf\u00fchren \u00fcber Konsole und Argumente mitgeben
\nGibt man keine Argumente mit, werden alle Tests durchgelauften.<\/p>\n
Struktur der Testf\u00e4lle<\/strong><\/p>\n
REQUIRE(calculate(\"6\") == 6);<\/pre>\n
Nach REQUIRE schreibt man die Funktion, die aufgerufen werden soll und gibt ihr die notwendigen Werte mit.
\nNach dem == folgt das zu erwartende Ergebnis.<\/p>\n","protected":false},"excerpt":{"rendered":"
Es gibt CATCH, das Testing f\u00fcr C++ erm\u00f6glicht. Es gibt einen Blogeintrag, der den Einsatz von CATCH auf hohem Niveau beschreibt. Zum Starten ist das Tutorial sehr gut. #define CATCH_CONFIG_MAIN \/\/ This tells Catch to provide a main() – only do this in one cpp file #include „catch.hpp“ unsigned int Factorial( unsigned int number ) … Unit Testing with Catch<\/span> weiterlesen<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[29,60],"tags":[],"_links":{"self":[{"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/posts\/674"}],"collection":[{"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/comments?post=674"}],"version-history":[{"count":5,"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/posts\/674\/revisions"}],"predecessor-version":[{"id":681,"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/posts\/674\/revisions\/681"}],"wp:attachment":[{"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/media?parent=674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/categories?post=674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/coolt.ch\/notizen\/wp-json\/wp\/v2\/tags?post=674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}