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//: Support a trace block inside scenario blocks.
//: Allows two kinds of assertions:
//: trace must contain [ ... ]
//: trace must not contain [ ... ]
:(scenarios "parse_scenario")
:(scenario scenario_trace_block)
scenario foo [
trace should contain [
bar: baz
bar: floo
]
trace should not contain [
bar: abc
]
]
+scenario: +bar: baz
+scenario: +bar: floo
+scenario: -bar: abc
:(before "End scenario Fields")
vector<pair<string, string> > trace_checks;
vector<pair<string, string> > trace_negative_checks;
:(before "End Scenario Command Handlers")
else if (scenario_command == "trace") {
handle_scenario_trace_directive(inner, x);
}
:(before "End Scenario Checks")
check_trace_contents(Scenarios[i]);
check_trace_negative_contents(Scenarios[i]);
:(code)
void handle_scenario_trace_directive(istream& in, scenario& out) {
if (next_word(in) != "should") {
raise << "'trace' directive inside scenario must continue 'trace should'\n";
}
string s = next_word(in);
if (s == "not") {
handle_scenario_trace_negative_directive(in, out);
return;
}
if (s != "contain") {
raise << "'trace' directive inside scenario must continue 'trace should [not] contain'\n";
}
skip_bracket(in, "'trace' directive inside scenario must begin with 'trace should contain ['\n");
while (true) {
skip_whitespace_and_comments(in);
if (in.eof()) break;
if (in.peek() == ']') break;
string curr_line;
getline(in, curr_line);
istringstream tmp(curr_line);
tmp >> std::noskipws;
string label = slurp_until(tmp, ':');
if (tmp.get() != ' ') {
raise << "'trace' directive inside scenario should contain lines of the form 'label: message', instead got " << curr_line;
continue;
}
string message = slurp_rest(tmp);
out.trace_checks.push_back(pair<string, string>(label, message));
trace("scenario") << '+' << label << ": " << message << '\n';
}
skip_whitespace(in);
assert(in.get() == ']');
}
void handle_scenario_trace_negative_directive(istream& in, scenario& out) {
// 'not' already slurped
if (next_word(in) != "contain") {
raise << "'trace' directive inside scenario must continue 'trace should not contain'\n";
}
skip_bracket(in, "'trace' directive inside scenario must begin with 'trace should not contain ['\n");
while (true) {
skip_whitespace_and_comments(in);
if (in.eof()) break;
if (in.peek() == ']') break;
string curr_line;
getline(in, curr_line);
istringstream tmp(curr_line);
tmp >> std::noskipws;
string label = slurp_until(tmp, ':');
if (tmp.get() != ' ') {
raise << "'trace' directive inside scenario should contain lines of the form 'label: message', instead got " << curr_line;
continue;
}
string message = slurp_rest(tmp);
out.trace_negative_checks.push_back(pair<string, string>(label, message));
trace("scenario") << '-' << label << ": " << message << '\n';
}
skip_whitespace(in);
assert(in.get() == ']');
}
string slurp_rest(istream& in) {
ostringstream out;
char c;
while (in >> c) {
out << c;
}
return out.str();
}
void check_trace_contents(const scenario& s) {
if (s.trace_checks.empty()) return;
ostringstream contents;
for (size_t i = 0; i < s.trace_checks.size(); ++i) {
contents << s.trace_checks[i].first << ": " << s.trace_checks[i].second << "";
}
CHECK_TRACE_CONTENTS(contents.str());
}
void check_trace_negative_contents(const scenario& s) {
for (size_t i = 0; i < s.trace_negative_checks.size(); ++i) {
if (trace_count(s.trace_negative_checks[i].first, s.trace_negative_checks[i].second) > 0) {
raise << "trace shouldn't contain " << s.trace_negative_checks[i].first << ": " << s.trace_negative_checks[i].second << '\n';
Passed = false;
}
}
}
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