apps/ex12

void test_trace_check_compares() {
  CHECK_TRACE_CONTENTS("test layer", "");
  trace("test layer") << "foo";
  CHECK_TRACE_CONTENTS("test layer", "foo");
}

void test_trace_check_filters_layers() {
  trace("test layer 1") << "foo";
  trace("test layer 2") << "bar";
  CHECK_TRACE_CONTENTS("test layer 1", "foo");
}

void test_trace_check_ignores_other_lines() {
  trace("test layer 1") << "foo";
  trace("test layer 1") << "bar";
  CHECK_TRACE_CONTENTS("test layer 1", "foo");
}

void test_trace_check_always_finds_empty_lines() {
  CHECK_TRACE_CONTENTS("test layer 1", "");
}

void test_trace_check_treats_empty_layers_as_wildcards() {
  trace("test layer 1") << "foo";
  CHECK_TRACE_CONTENTS("", "foo");
}

void test_trace_check_multiple_lines_at_once() {
  trace("test layer 1") << "foo";
  trace("test layer 2") << "bar";
  CHECK_TRACE_CONTENTS("", "foo\n"
                           "bar\n");
}

void test_trace_check_always_finds_empty_lines2() {
  CHECK_TRACE_CONTENTS("test layer 1", "\n\n\n");
}

void test_trace_orders_across_layers() {
  trace("test layer 1") << "foo";
  trace("test layer 2") << "bar";
  trace("test layer 1") << "qux";
  CHECK_TRACE_CONTENTS("", "foo\n"
                           "bar\n"
                           "qux\n");
}

void test_trace_supports_count() {
  trace("test layer 1") << "foo";
  trace("test layer 1") << "foo";
  CHECK_EQ(trace_count("test layer 1", "foo"), 2);
}

//// helpers

// can't check trace because trace methods call 'split'

void test_split_returns_at_least_one_elem() {
  vector<string> result = split("", ",");
  CHECK_EQ(result.size(), 1);
  CHECK_EQ(result[0], "");
}

void test_split_returns_entire_input_when_no_delim() {
  vector<string> result = split("abc", ",");
  CHECK_EQ(result.size(), 1);
  CHECK_EQ(result[0], "abc");
}

void test_split_works() {
  vector<string> result = split("abc,def", ",");
  CHECK_EQ(result.size(), 2);
  CHECK_EQ(result[0], "abc");
  CHECK_EQ(result[1], "def");
}

void test_split_works2() {
  vector<string> result = split("abc,def,ghi", ",");
  CHECK_EQ(result.size(), 3);
  CHECK_EQ(result[0], "abc");
  CHECK_EQ(result[1], "def");
  CHECK_EQ(result[2], "ghi");
}

void test_split_handles_multichar_delim() {
  vector<string> result = split("abc,,def,,ghi", ",,");
  CHECK_EQ(result.size(), 3);
  CHECK_EQ(result[0], "abc");
  CHECK_EQ(result[1], "def");
  CHECK_EQ(result[2], "ghi");
}
ofs	hex dump	ascii
0000	7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 02 00 03 00 01 00 00 00 d3 00 00 09 34 00 00 00	.ELF........................4...
0020	00 00 00 00 00 00 00 00 34 00 20 00 02 00 00 00 00 00 00 00 01 00 00 00 74 00 00 00 74 00 00 09	........4...............t...t...
0040	74 00 00 09 76 00 00 00 76 00 00 00 05 00 00 00 00 10 00 00 01 00 00 00 ea 00 00 00 ea 00 00 0a	t...v...v.......................
0060	ea 00 00 0a 18 00 00 00 18 00 00 00 06 00 00 00 00 10 00 00 b8 01 00 00 00 cd 80 b8 03 00 00 00	................................
0080	cd 80 c3 b8 04 00 00 00 cd 80 c3 b8 05 00 00 00 cd 80 c3 b8 06 00 00 00 cd 80 c3 b8 08 00 00 00	................................
00a0	cd 80 c3 b8 0a 00 00 00 cd 80 c3 b8 26 00 00 00 cd 80 c3 b8 5a 00 00 00 cd 80 c3 b8 36 00 00 00	............&.......Z.......6...
00c0	cd 80 c3 b8 a2 00 00 00 cd 80 c3 b8 09 01 00 00 cd 80 c3 bb ea 00 00 0a e8 d6 ff ff ff c7 00 34	...............................4
00e0	00 00 00 89 c3 e8 8a ff ff ff 00 00 00 00 00 01 00 00 03 00 00 00 22 00 00 00 ff ff ff ff 00 00	......................".........
0100	00 00	..