cpp-case-matcher/test/match_test.cxx

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

#pragma once

#include "match.hpp"

#include <cxxtest/TestSuite.h>

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

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

class case_matcher_TestSuite : public CxxTest::TestSuite {
public:
  example const ex{1};
  bool const b{true};
public:
  void test_match_explicit_case() {
    match(ex, b) {
      with(example{1}, true) {}
      nomatch() { TS_FAIL("Unable to match"); }
      TS_ASSERT( ! _matcher_local.unmatched() );
    }
  }
  
  void test_nomatch_incorrect_case() {
    match(ex, b) {
      with(example{1}, false) { TS_FAIL("Incorrect match!"); }
      TS_ASSERT( _matcher_local.unmatched() );
    }
  }
  
  void test_match_fallback_case() {
    match(ex, b) {
      with(example{1}, false) { TS_FAIL("Incorrect match!"); }
      with(example{1}, true) {}
      TS_ASSERT( !_matcher_local.unmatched() );
    }
  }
  
  void test_match_any_case() {
    match(ex, b) {
      with(example{1}, false) { TS_FAIL("Incorrect match!"); }
      with(matcher::any, true) {}
      TS_ASSERT( !_matcher_local.unmatched() );
    }
  }
  
  void test_match_multiple_cases() {
    int hits{0};
    match(ex, b) {
      with(matcher::any, true) { ++hits; }
      and_with(example{1}, matcher::any) { ++hits; }
    }
    TS_ASSERT_EQUALS(hits, 2);
  }
  
  void test_match_any_of_list() {
    match(ex, b) {
      with(matcher::any_of(example{1}, example{0xDEADBEEF}), true) {}
      nomatch() { TS_FAIL("Unable to match with choice"); }
    }
  }

  void test_nomatch_any_of_list_without_self() {
    match(ex, b) {
      with(matcher::any_of(example{0}, example{0xDEADBEEF}), true) {
        TS_FAIL("Incorrect match!");
      }
      TS_ASSERT( _matcher_local.unmatched() );
    }
  }
};