cpp-case-matcher/test/match_test.cxx

//
//  match.t.h
//  case-matcher
//
//  Created by Sam Jaffe on 2/3/17.
//

#include <gmock/gmock.h>

#include "match/match.hpp"

struct example {
  example(long in) : i(in) {}
  long i;
};

bool operator==(example const & a, example const & b) {
  return a.i == b.i;
}

struct CaseMatcherTest : public testing::Test {
  example const ex{1};
  bool const b{true};
};

using ::testing::Eq;

TEST_F(CaseMatcherTest, MatchesCorrectValue) {
  match(ex, b) {
    with(example{1}, true) {
      EXPECT_FALSE(_matcher_local.unmatched());
    } nomatch() {
      FAIL() << "Unable to match";
    }
    EXPECT_FALSE(_matcher_local.unmatched());
  } else {
    FAIL() << "Unable to construct matcher";
  }
}

TEST_F(CaseMatcherTest, NonMatchingClauseLeavesUnmatched) {
  match(ex, b) {
    with(example{1}, false) {
      FAIL() << "Incorrect match!";
    }
    EXPECT_TRUE(_matcher_local.unmatched());
  } else {
     FAIL() << "Unable to construct matcher";
  }
}

TEST_F(CaseMatcherTest, CanPassMatchingWithSecondClauseListing) {
  match(ex, b) {
    with(example{1}, false) {
      FAIL() << "Incorrect match!";
    }
    EXPECT_TRUE(_matcher_local.unmatched());
    with(example{1}, true) {
      EXPECT_FALSE(_matcher_local.unmatched());
    }
    EXPECT_FALSE(_matcher_local.unmatched());
  } else {
     FAIL() << "Unable to construct matcher";
  }
}

TEST_F(CaseMatcherTest, CanMatchWithWildcard) {
  match(ex, b) {
    with(example{1}, false) {
      FAIL() << "Incorrect match!";
    }
    with(matcher::any, true) {
      EXPECT_FALSE(_matcher_local.unmatched());
    }
    EXPECT_FALSE(_matcher_local.unmatched());
  } else {
      FAIL() << "Unable to construct matcher";
  }
}

TEST_F(CaseMatcherTest, CanMatchMultipleUnlinkedClauses) {
  int hits{0};
  match(ex, b) {
    with(matcher::any, true) {
      ++hits;
    }
    and_with(example{1}, matcher::any) {
      ++hits;
    }
  } else {
     FAIL() << "Unable to construct matcher";
  }
  EXPECT_THAT(hits, Eq(2));
}

TEST_F(CaseMatcherTest, CanMatchCompoundList) {
  match(ex, b) {
    with(matcher::any_of(example{1}, example{0xDEADBEEF}), true) {
    } nomatch() {
      FAIL() << "Unable to match with choice";
    }
  } else {
      FAIL() << "Unable to construct matcher";
  }
}

TEST_F(CaseMatcherTest, nomatch_any_of_list_without_self) {
  match(ex, b) {
    with(matcher::any_of(example{0}, example{0xDEADBEEF}), true) {
       FAIL() << "Incorrect match!";
    }
    EXPECT_TRUE(_matcher_local.unmatched());
  } else {
      FAIL() << "Unable to construct matcher";
  }
}