#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <unity.h>
#include "../src/stringManipulation.c"

void test_everyCharacterIsDigit()
{
	/*test values*/
	char str_1[] = "1234", str_2[] = "hey123", str_3[] = "good evening!", str_4[] = "äöü";
	
	/*assertions*/
	TEST_ASSERT_TRUE(everyCharacterIsDigit(str_1));
	TEST_ASSERT_FALSE(everyCharacterIsDigit(str_2));
	TEST_ASSERT_FALSE(everyCharacterIsDigit(str_3));
	TEST_ASSERT_FALSE(everyCharacterIsDigit(str_4));
}

void test_power()
{
	/*test block 1*/
	int testValues[] = {1,2,3,4,5,6,7,8,9,10};
	int expectedValues[] = {1,4,9,16,25,36,49,64,81,100};
	int length = sizeof(testValues)/sizeof(int);
	const int exponent = 2;
	for(int i=0;i<length;++i){
		TEST_ASSERT_EQUAL_INT(expectedValues[i], power(testValues[i],exponent));	
	}	

	/*test block 2*/
	int testValues_2[] = {11,12,13,14,15,16,17,18,19,20};
	int expectedValues_2[] = {121,144,169,196,225,256,289,324,361,400};
	length = sizeof(testValues_2)/sizeof(int);
	for(int i=0;i<length;++i){
		TEST_ASSERT_EQUAL_INT(expectedValues_2[i],power(testValues_2[i],exponent));
	}
	
	/*test block 3*/
	int testValues_3[] = {1,2,3,4,5,6,7,8,9,10};
	int expectedValues_3[] = {1,8,27,64,125,216,343,512,729,1000};
	const int exponent_2 = 3;
	length = sizeof(testValues_3)/sizeof(int);
	for(int i=0;i<length;++i){
		TEST_ASSERT_EQUAL_INT(expectedValues_3[i],power(testValues_3[i],exponent_2));
	}
	/*test block 4*/
	int testValues_4[] = {11,12,13,14,15,16,17,18,19,20};
	int expectedValues_4[] = {1331,1728,2197,2744,3375,4096,4913,5832,6859,8000};
	length = sizeof(testValues_4)/sizeof(int);
	for(int i=0;i<length;++i){
		TEST_ASSERT_EQUAL_INT(expectedValues_4[i],power(testValues_4[i],exponent_2));	
	}
	/*test block 5*/
	int testValues_5[] = {0,0,19,2,4,5,11,54,32,12,77};
	int exponents[] = {0,1,2,7,4,2,0,1,2,4,2};
	int expectedValues_5[] = {0, 0, 361,128,256,25,1,54,1024,20736,5929};
	length = sizeof(testValues_5)/sizeof(int);
	for(int i=0;i<length;++i){
		TEST_ASSERT_EQUAL_INT(expectedValues_5[i], power(testValues_5[i],exponents[i]));
	}
}

void test_to_string() 
{
	/*initializing test values*/
	char *result_1[] = {"0","1","2","3","4","5","6","7","8","9","10"};
	char *result_2[] = {"500","502","504","506","508","510","512","514","516","518"};
	char *result_3[] = {"1000","2000","3000","4000","5000","6000","7000","8000","9000","10000"};
	char *result_4[] = {"9999","8999","7999","6999","5999","4999","3999","2999","1999","999"};
	char *result_5[] = {"1000000","2000000","3000000","4000000","5000000","6000000","7000000",
			    "8000000","9000000","10000000"};

	/*assertions*/
	for(int i=0;i<=10;++i){
		TEST_ASSERT_EQUAL_STRING(result_1[i],to_string(i));
	}	
	
	for(int i=0, j=500;i<10;++i,j+=2){
		TEST_ASSERT_EQUAL_STRING(result_2[i],to_string(j));
	}

	for(int i=0, j=1000;i<10;++i,j+=1000){
		TEST_ASSERT_EQUAL_STRING(result_3[i],to_string(j));	
	}
	
	for(int i=0, j=9999;i<10;++i,j-=1000){
		TEST_ASSERT_EQUAL_STRING(result_4[i], to_string(j));
	}
	for(int i=0, j=1000000;i<10;++i,j+=1000000){
		TEST_ASSERT_EQUAL_STRING(result_5[i],to_string(j));
	}

}


void test_generateCheckString() 
{
	/*test block 1*/
	int numbers_1[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25};
	char *strings_1[] = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};
	char *result_1[] = {"0=a","1=b","2=c","3=d","4=e","5=f","6=g","7=h","8=i","9=j","10=k","11=l","12=m","13=n","14=o","15=p","16=q","17=r",                            "18=s","19=t","20=u","21=v","22=w","23=x","24=y","25=z"};
	for(int i=0;i<26;++i){
		TEST_ASSERT_EQUAL_STRING(result_1[i],generateCheckString(numbers_1[i],*(strings_1+i)));
	}
	/*test block 2*/
	int numbers_2[] = {0,1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765,10946,17711,28657,46368,75025};
	char *strings_2[] = {"z","zy","zyx","zyxw","zyxwv","zyxwvu","zyxwvut","zyxwvuts","zyxwvutsr","zyxwvutsrq","zyxwvutsrqp",
			     "zyxwvutsrqpo","zyxwvutsrqpon","zyxwvutsrqponm","zyxwvutsrqponml","zyxwvutsrqponmlk",
			     "zyxwvutsrqponmlkj","zyxwvutsrqponmlkji","zyxwvutsrqponmlkjih","zyxwvutsrqponmlkjihg","zyxwvutsrqponmlkjihgf",
			      "zyxwvutsrqponmlkjihgfe","zyxwvutsrqponmlkjihgfed","zyxwvutsrqponmlkjihgfedc","zyxwvutsrqponmlkjihgfedcb",
			      "zyxwvutsrqponmlkjihgfedcba"};
	char *result_2[] = {"0=z","1=zy","1=zyx","2=zyxw","3=zyxwv","5=zyxwvu","8=zyxwvut","13=zyxwvuts","21=zyxwvutsr","34=zyxwvutsrq",
	                    "55=zyxwvutsrqp","89=zyxwvutsrqpo","144=zyxwvutsrqpon","233=zyxwvutsrqponm","377=zyxwvutsrqponml",
			    "610=zyxwvutsrqponmlk","987=zyxwvutsrqponmlkj","1597=zyxwvutsrqponmlkji","2584=zyxwvutsrqponmlkjih",
			    "4181=zyxwvutsrqponmlkjihg","6765=zyxwvutsrqponmlkjihgf","10946=zyxwvutsrqponmlkjihgfe",
			    "17711=zyxwvutsrqponmlkjihgfed","28657=zyxwvutsrqponmlkjihgfedc","46368=zyxwvutsrqponmlkjihgfedcb",
			    "75025=zyxwvutsrqponmlkjihgfedcba"};
	for(int i=0;i<26;++i){
		TEST_ASSERT_EQUAL_STRING(result_2[i],generateCheckString(numbers_2[i],*(strings_2+i)));	
	}
	/*test block 3*/
	srand(time(0));
	int random_number=0;
	char *random_numbers_strings[20];
	int random_numbers[20];
	for(int i=0;i<20;++i){
		random_number = (rand() % 100) + 1;
		random_numbers_strings[i] = to_string(random_number);
		random_numbers[i] = random_number;
	}
	char *strings_3[] = {"tree","plant","tea","programming","assembler","unix","BSD","snow","mountain","table","wood","forest", "calculator","book","light","keyboard","old","paper","pencil","voltage"};
	char *result_3[20];
	for(int i=0;i<20;++i){
		random_numbers_strings[i] = strcat(random_numbers_strings[i],"=");
		result_3[i] = strcat(random_numbers_strings[i],strings_3[i]);
		printf("%s\n",result_3[i]);
	}
	for(int i=0;i<20;++i){
		TEST_ASSERT_EQUAL_STRING(result_3[i],generateCheckString(random_numbers[i],strings_3[i]));
	}
}