calvin24-TestCollatz.c++

// --------------------------------
// projects/collatz/TestCollatz.c++
// Copyright (C) 2013
// Glenn P. Downing
// --------------------------------

/*
To test the program:
    % ls -al /usr/include/gtest/
    ...
    gtest.h
    ...

    % locate libgtest.a
    /usr/lib/libgtest.a

    % locate libpthread.a
    /usr/lib/x86_64-linux-gnu/libpthread.a
    /usr/lib32/libpthread.a

    % locate libgtest_main.a
    /usr/lib/libgtest_main.a

    % g++ -pedantic -std=c++0x -Wall Collatz.c++ TestCollatz.c++ -o TestCollatz -lgtest -lpthread -lgtest_main

    % valgrind TestCollatz > TestCollatz.out
*/

// --------
// includes
// --------

#include <iostream> // cout, endl
#include <sstream>  // istringtstream, ostringstream
#include <string>   // ==

#include "gtest/gtest.h"

#include "Collatz.h"

// -----------
// TestCollatz
// -----------

// ----
// read
// ----

TEST(Collatz, read_1) {
    std::istringstream r("1 10\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    1);
    ASSERT_TRUE(j ==   10);}
    

TEST(Collatz, read_2) {
    std::istringstream r("100 200\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    100);
    ASSERT_TRUE(j ==   200);}

TEST(Collatz, read_3) {
    std::istringstream r("201 210\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    201);
    ASSERT_TRUE(j ==   210);}

TEST(Collatz, read_4) {
    std::istringstream r("900 1000\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    900);
    ASSERT_TRUE(j ==   1000);}
    
TEST(Collatz, reverseRead) {
    std::istringstream r("1000 1\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    1000);
    ASSERT_TRUE(j ==   1);}

TEST(Collatz, reverseRead_2) {
    std::istringstream r("300 214\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    300);
    ASSERT_TRUE(j ==   214);}
    
TEST(Collatz, sameNumberRead) {
    std::istringstream r("40 40\n");
    int i;
    int j;
    const bool b = collatz_read(r, i, j);
    ASSERT_TRUE(b == true);
    ASSERT_TRUE(i ==    40);
    ASSERT_TRUE(j ==   40);}




// ----
// eval
// ----

TEST(Collatz, eval_1) {
    const int v = collatz_eval(1, 10);
    ASSERT_TRUE(v == 20);}

TEST(Collatz, eval_2) {
    const int v = collatz_eval(100, 200);
    ASSERT_TRUE(v == 125);}

TEST(Collatz, eval_3) {
    const int v = collatz_eval(201, 210);
    ASSERT_TRUE(v == 89);}

TEST(Collatz, eval_4) {
    const int v = collatz_eval(900, 1000);
    ASSERT_TRUE(v == 174);}
   
TEST(Collatz, eval_5){
	const int v = collatz_eval(10, 20);
	ASSERT_TRUE(v == 21 );}
	
TEST(Collatz, reverse_eval){
	const int v = collatz_eval(45, 23);
	ASSERT_TRUE(v == 112 );}
	
TEST(Collatz, eval_7){
	const int v = collatz_eval(60, 80);
	ASSERT_TRUE(v == 116 );}
	
TEST(Collatz, sameNumber_eval){
	const int v = collatz_eval(1, 1);
	ASSERT_TRUE(v == 1);}


// -----
// print
// -----

TEST(Collatz, print_1) {
    std::ostringstream w;
    collatz_print(w, 1, 10, 20);
    ASSERT_TRUE(w.str() == "1 10 20\n");}


TEST(Collatz, print_2) {
    std::ostringstream w;
    collatz_print(w, 100, 200, 125);
    ASSERT_TRUE(w.str() == "100 200 125\n");}

TEST(Collatz, print_3) {
    std::ostringstream w;
    collatz_print(w, 201, 210, 89);
    ASSERT_TRUE(w.str() == "201 210 89\n");}

TEST(Collatz, print_4) {
    std::ostringstream w;
    collatz_print(w, 900, 1000, 174);
    ASSERT_TRUE(w.str() == "900 1000 174\n");}

TEST(Collatz, reverseRead_print) {
    std::ostringstream w;
    collatz_print(w, 45, 23, 112);
    ASSERT_TRUE(w.str() == "45 23 112\n");}

TEST(Collatz, equalRead_print) {
    std::ostringstream w;
    collatz_print(w, 1, 1, 1);
    ASSERT_TRUE(w.str() == "1 1 1\n");}

// -----
// solve
// -----

TEST(Collatz, solve_1) {
    std::istringstream r("1 10\n100 200\n201 210\n900 1000\n");
    std::ostringstream w;
    collatz_solve(r, w);
    ASSERT_TRUE(w.str() == "1 10 20\n100 200 125\n201 210 89\n900 1000 174\n");}
 
 
TEST(Collatz, solve_2) {
    std::istringstream r("1 10\n100 200\n");
    std::ostringstream w;
    collatz_solve(r, w);
    ASSERT_TRUE(w.str() == "1 10 20\n100 200 125\n");}
    
TEST(Collatz, solve_3) {
    std::istringstream r("1 10\n100 200\n201 210\n");
    std::ostringstream w;
    collatz_solve(r, w);
    ASSERT_TRUE(w.str() == "1 10 20\n100 200 125\n201 210 89\n");}

TEST(Collatz, solve_4) {
    std::istringstream r("1 10\n");
    std::ostringstream w;
    collatz_solve(r, w);
    ASSERT_TRUE(w.str() == "1 10 20\n");}
    
TEST(Collatz, normalReverseEqualCases_solve) {
    std::istringstream r("1 10\n45 23\n1 1\n");
    std::ostringstream w;
    collatz_solve(r, w);
    ASSERT_TRUE(w.str() == "1 10 20\n45 23 112\n1 1 1\n");}