ww: put test result trailers on a new line

test/package/package_test.ww

@@ -1683,6 +1683,115 @@ fn cwdwritedata(dir: str, label: str) void = {
 	clean(root);
 };
 
+@test fn directory_test_trailer_starts_on_new_line() void = {
+	let root: str = fresh();
+	let pass: str = strings.concat(root, "/pass");
+	let fail: str = strings.concat(root, "/fail");
+	let complete: str = strings.concat(root, "/complete");
+	let empty: str = strings.concat(root, "/empty");
+	let signal: str = strings.concat(root, "/signal");
+	mkdirall(pass);
+	mkdirall(fail);
+	mkdirall(complete);
+	mkdirall(empty);
+	mkdirall(signal);
+	writefile(strings.concat(pass, "/partial_test.ww"), strings.concat(
+		"package trailer_pass_test;\nimport os;\n",
+		"fn init() void = { os.write(os.STDOUT_FILENO,",
+		" \"partial-success\".ptr, 15u64); os.exit(0); };\n",
+		"@test fn unreachable() void = { void; };\n"));
+	writefile(strings.concat(fail, "/partial_test.ww"), strings.concat(
+		"package trailer_fail_test;\nimport os;\n",
+		"fn init() void = { os.write(os.STDERR_FILENO,",
+		" \"partial-failure\".ptr, 15u64); os.exit(7); };\n",
+		"@test fn unreachable() void = { void; };\n"));
+	writefile(strings.concat(complete, "/complete_test.ww"), strings.concat(
+		"package trailer_complete_test;\nimport os;\n",
+		"fn init() void = { os.write(os.STDOUT_FILENO,",
+		" \"complete\\n\".ptr, 9u64); os.exit(0); };\n",
+		"@test fn unreachable() void = { void; };\n"));
+	writefile(strings.concat(empty, "/empty_test.ww"), strings.concat(
+		"package trailer_empty_test;\nimport os;\n",
+		"fn init() void = { os.exit(0); };\n",
+		"@test fn unreachable() void = { void; };\n"));
+	writefile(strings.concat(signal, "/partial_test.ww"), strings.concat(
+		"package trailer_signal_test;\nimport os;\n",
+		"fn init() void = { os.write(os.STDOUT_FILENO,",
+		" \"partial-signal\".ptr, 14u64);",
+		" os.kill(os.getpid(), os.SIGTERM); };\n",
+		"@test fn unreachable() void = { void; };\n"));
+
+	let stages: []str = ["ww", "ww_ww"];
+	let tags: []str = ["c", "ww"];
+	let multiout: []str = ["", ""];
+	let multierr: []str = ["", ""];
+	let retained: []str = ["", ""];
+	let out: commandout;
+	let i: i32 = 0;
+	for (i < stages.len) {
+		let mav: []str = [driver(stages[i]), "test", "-j", "5", "-run",
+			"unreachable", pass, fail, complete, empty, signal];
+		runcommand(root, strings.concat("trailer-multi-", tags[i]), mav,
+			(90i64 * (time.second: i64)): time.duration, &out);
+		expectexit(&out, 1);
+		assert(out.stderr.len == 0);
+		assert(has(out.stdout, "partial-success\nok   "));
+		assert(!has(out.stdout, "partial-successok   "));
+		assert(has(out.stdout, "partial-failure\nFAIL "));
+		assert(!has(out.stdout, "partial-failureFAIL "));
+		assert(has(out.stdout, "partial-signal\nFAIL "));
+		assert(!has(out.stdout, "partial-signalFAIL "));
+		assert(has(out.stdout, "complete\nok   "));
+		assert(!has(out.stdout, "complete\n\nok   "));
+		multiout[i] = strings.dup(out.stdout);
+		multierr[i] = strings.dup(out.stderr);
+
+		let eav: []str = [driver(stages[i]), "test", empty];
+		runcommand(root, strings.concat("trailer-empty-", tags[i]), eav,
+			(60i64 * (time.second: i64)): time.duration, &out);
+		expectexit(&out, 0);
+		assert(out.stderr.len == 0);
+		assert(pos(out.stdout, "ok   ") == 0);
+
+		let lav: []str = [driver(stages[i]), "test", "-list", pass];
+		runcommand(root, strings.concat("trailer-list-", tags[i]), lav,
+			(60i64 * (time.second: i64)): time.duration, &out);
+		expectexit(&out, 0);
+		assert(out.stderr.len == 0);
+		assert(has(out.stdout, "partial-success\nok   "));
+
+		retained[i] = strings.concat(root, "/retained-", tags[i]);
+		let rav: []str = [driver(stages[i]), "test", "-o", retained[i],
+			pass];
+		runcommand(root, strings.concat("trailer-retained-", tags[i]), rav,
+			(60i64 * (time.second: i64)): time.duration, &out);
+		expectexit(&out, 0);
+		assert(out.stderr.len == 0);
+		assert(has(out.stdout, "partial-success\nok   "));
+		assert(os.exists(retained[i]));
+
+		let runav: []str = [retained[i]];
+		runcommand(root, strings.concat("trailer-manual-", tags[i]), runav,
+			(30i64 * (time.second: i64)): time.duration, &out);
+		expectexit(&out, 0);
+		assert(same(out.stdout, "partial-success"));
+		assert(out.stderr.len == 0);
+
+		let rawav: []str = [driver(stages[i]), "test",
+			strings.concat(pass, "/partial_test.ww")];
+		runcommand(root, strings.concat("trailer-raw-", tags[i]), rawav,
+			(60i64 * (time.second: i64)): time.duration, &out);
+		expectexit(&out, 0);
+		assert(same(out.stdout, "partial-success"));
+		assert(out.stderr.len == 0);
+		i += 1;
+	};
+	assert(same(multiout[0], multiout[1]));
+	assert(same(multierr[0], multierr[1]));
+	assert(same(readfile(retained[0]), readfile(retained[1])));
+	clean(root);
+};
+
 @test fn imported_dependency_tests_do_not_leak() void = {
 	let root: str = fresh();
 	let base: str = packagepath("dependency");