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main.cpp
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#include <cassert>
#include <fstream>
#include <iostream>
#include <cstdlib>
#include <string>
#include "trendtracker.h"
using namespace std;
inline void _test(const char* expression, const char* file, int line)
{
cerr << "test(" << expression << ") failed in file " << file;
cerr << ", line " << line << "." << endl;
abort();
}
#define test(EXPRESSION) ((EXPRESSION) ? (void)0 : _test(#EXPRESSION, __FILE__, __LINE__))
int main()
{
// Setup
vector<string> R;
string s, line;
// Test size() and insert().
Trendtracker T1;
test(T1.size() == 0);
test(T1.popularity("#algorithms") == -1);
test(T1.popularity("#cs4all") == -1);
test(T1.popularity("#programming") == -1);
T1.insert("#cs4all");
test(T1.size() == 1);
test(T1.popularity("#algorithms") == -1);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == -1);
T1.insert("#algorithms");
test(T1.size() == 2);
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == -1);
T1.insert("#programming");
test(T1.size() == 3);
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == 0);
T1.insert("#algorithms");
test(T1.size() == 3);
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == 0);
T1.tweeted("#programming");
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == 1);
T1.tweeted("#programming");
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == 2);
T1.tweeted("#programming");
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 0);
test(T1.popularity("#programming") == 3);
T1.tweeted("#cs4all");
test(T1.popularity("#algorithms") == 0);
test(T1.popularity("#cs4all") == 1);
test(T1.popularity("#programming") == 3);
T1.tweeted("#algorithms");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 1);
test(T1.popularity("#programming") == 3);
T1.tweeted("#cs4all");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#programming") == 3);
T1.tweeted("#datastructures");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == -1);
test(T1.popularity("#programming") == 3);
T1.insert("#datastructures");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == 0);
test(T1.popularity("#programming") == 3);
T1.tweeted("#datastructures");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == 1);
test(T1.popularity("#programming") == 3);
T1.tweeted("#datastructures");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == 2);
test(T1.popularity("#programming") == 3);
T1.tweeted("#datastructures");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == 3);
test(T1.popularity("#programming") == 3);
T1.tweeted("#datastructures");
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == 4);
test(T1.popularity("#programming") == 3);
Trendtracker T2;
T2.insert("#3333");
T2.insert("#programming");
T2.insert("#cs4all");
T2.insert("#C++");
T2.insert("#algorithms");
T2.tweeted("#programming");
T2.tweeted("#programming");
T2.tweeted("#programming");
T2.tweeted("#programming");
T2.tweeted("#programming");
T2.tweeted("#C++");
T2.tweeted("#C++");
T2.tweeted("#C++");
T2.tweeted("#C++");
T2.tweeted("#cs4all");
T2.tweeted("#cs4all");
T2.tweeted("#cs4all");
T2.tweeted("#algorithms");
T2.tweeted("#algorithms");
T2.tweeted("#3333");
test(T2.popularity("#programming") == 5);
test(T2.popularity("#cs4all") == 3);
test(T2.popularity("#algorithms") == 2);
test(T2.popularity("#C++") == 4);
test(T2.popularity("#3333") == 1);
T2.insert("#3333");
T2.insert("#programming");
T2.insert("#cs4all");
T2.insert("#C++");
T2.insert("#algorithms");
test(T2.popularity("#programming") == 5);
test(T2.popularity("#cs4all") == 3);
test(T2.popularity("#algorithms") == 2);
test(T2.popularity("#C++") == 4);
test(T2.popularity("#3333") == 1);
// Enforce no usage of global variables
test(T1.popularity("#algorithms") == 1);
test(T1.popularity("#cs4all") == 2);
test(T1.popularity("#datastructures") == 4);
test(T1.popularity("#programming") == 3);
Trendtracker T3;
test(T3.top_trend() == "");
T3.top_three_trends(R);
test(R.size() == 0);
T3.insert("#programming");
test(T3.top_trend() == "#programming");
T3.top_three_trends(R);
test(R.size() == 1);
test(R[0] == "#programming");
T3.tweeted("#programming");
test(T3.top_trend() == "#programming");
T3.top_three_trends(R);
test(R.size() == 1);
test(R[0] == "#programming");
// At this point:
// programming: 1
T3.insert("#C++");
T3.tweeted("#C++");
T3.tweeted("#C++");
test(T3.top_trend() == "#C++");
T3.top_three_trends(R);
test(R.size() == 2);
test(R[0] == "#C++");
test(R[1] == "#programming");
// At this point:
// C++: 2
// programming: 1
T3.insert("#3333");
T3.tweeted("#3333");
T3.tweeted("#3333");
T3.tweeted("#3333");
test(T3.top_trend() == "#3333");
T3.top_three_trends(R);
test(R.size() == 3);
test(R[0] == "#3333");
test(R[1] == "#C++");
test(R[2] == "#programming");
// At this point:
// 3333: 3
// C++: 2
// programming: 1
T3.insert("#cs4all");
T3.tweeted("#cs4all");
T3.tweeted("#cs4all");
T3.tweeted("#cs4all");
T3.tweeted("#cs4all");
test(T3.top_trend() == "#cs4all");
T3.top_three_trends(R);
test(R.size() == 3);
test(R[0] == "#cs4all");
test(R[1] == "#3333");
test(R[2] == "#C++");
// At this point:
// cs4all: 4
// 3333: 3
// C++: 2
// programming: 1
T3.tweeted("#programming");
T3.tweeted("#programming");
T3.tweeted("#programming");
T3.tweeted("#programming");
test(T3.top_trend() == "#programming");
T3.top_three_trends(R);
test(R.size() == 3);
test(R[0] == "#programming");
test(R[1] == "#cs4all");
test(R[2] == "#3333");
// At this point:
// programming: 5
// cs4all: 4
// 3333: 3
// C++: 2
T3.tweeted("#cs4all");
T3.tweeted("#cs4all");
T3.tweeted("#3333");
test(T3.top_trend() == "#cs4all");
T3.top_three_trends(R);
test(R.size() == 3);
test(R[0] == "#cs4all");
test(R[1] == "#programming");
test(R[2] == "#3333");
// At this point:
// cs4all: 6
// programming: 5
// 3333: 4
// C++: 2
for (int i = 0; i < 10000; ++i)
T3.tweeted("#C++");
test(T3.top_trend() == "#C++");
T3.top_three_trends(R);
test(R.size() == 3);
test(R[0] == "#C++");
test(R[1] == "#cs4all");
test(R[2] == "#programming");
Trendtracker T4;
ifstream f;
f.open("common.txt");
assert(f.is_open()); // If this fails, you're missing common.txt
while (getline(f, line))
T4.insert(line);
f.close();
test(T4.size() == 3597);
f.open("common.txt");
while (getline(f, line))
T4.tweeted(line);
f.close();
for (int i = 0; i < 1000; ++i)
{
test(T4.popularity("#finishing") == 6);
test(T4.popularity("#completely") == 5);
test(T4.popularity("#is") == 4);
test(T4.popularity("#sometimes") == 3);
test(T4.popularity("#quieting") == 2);
test(T4.top_trend() == "#finishing");
T4.top_three_trends(R);
test(R[0] == "#finishing");
test(R[1] == "#completely");
test(R[2] == "#is");
}
//Test top_k_trends
string weird = "#";
for (int i = 'a'; i <= 'z'; i++)
{
for (int j = 'a'; j <= 'z'; j++)
{
weird += i;
weird += j;
for (int i = 0; i < 3 * (weird[1] - 'a') + (weird[2] - 'a'); i++)
T4.tweeted(weird);
weird = "#";
}
}
T4.top_k_trends(R, 50);
test(R[2] == "#up");
test(R[5] == "#so");
test(R[10] == "#ok");
test(R[15] == "#me");
test(R[29] == "#finishing");
test(R[32] == "#quieting");
cout << "Assignment complete." << endl;
}