#include <bits/stdc++.h>
using namespace std;
const string YES = "Yes";
const string NO = "No";
string solve() {
  int N;
  cin >> N;
  vector<int> p(N);
  for (int i = 0; i < (N); ++i) {
    cin >> p[i];
  }
  for (int i = 0; i < (N - 1); ++i) {
    if (p[i] + 1 == p[i + 1]) {
      continue;
    }
    if (p[i] > p[i + 1]) {
      continue;
    }
    return NO;
  }
  return YES;
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int T;
  cin >> T;
  for (int t = 0; t < (T); ++t) {
    cout << solve() << endl;
  }
  return 0;
}
