added first tests (do not work)

src/bigint.cpp

@@ -43,9 +43,7 @@ BigInt::BigInt(double val):
 }
 
 std::string BigInt::getString(int base) const {
-    char *str = nullptr;
-    mpz_get_str(str, base, data);
-
+    char *str = mpz_get_str(nullptr, base, data);
     return str;
 }
 
@@ -53,6 +51,11 @@ BigInt::~BigInt() {
     mpz_clear(data);
 }
 
+BigInt &BigInt::operator =(const BigInt &val) {
+    mpz_set(data, val.data);
+    return *this;
+}
+
 //  add operators
 BigInt operator +(BigInt left, unsigned int right) {
     mpz_add_ui(left.data, left.data, right);

src/bigint.h

@@ -32,6 +32,8 @@ public:
     std::string getString(int base = 10) const;
     ~BigInt();
 
+    BigInt& operator = (const BigInt& val);
+
     friend BigInt operator + ( BigInt left, const BigInt& right);
     friend BigInt operator + ( BigInt left, unsigned int right);
     friend BigInt operator + ( BigInt left, int right);

tests/tests.pro

@@ -8,3 +8,5 @@ TEMPLATE = app
 TARGET = miniGmpTests
 
 SOURCES +=  tst_arithmetictests.cpp
+
+include(../GMP.pri)

tests/tst_arithmetictests.cpp

@@ -1,4 +1,5 @@
 #include <QtTest>
+#include <bigint.h>
 
 // add necessary includes here
 
@@ -11,25 +12,56 @@ public:
     ~arithmetictests();
 
 private slots:
-    void test_case1();
+    void operatorsTest();
+    void constructorsTest();
 
 };
 
-arithmetictests::arithmetictests()
-{
+arithmetictests::arithmetictests() {
 
 }
 
-arithmetictests::~arithmetictests()
-{
+arithmetictests::~arithmetictests() {
 
 }
 
-void arithmetictests::test_case1()
-{
+void arithmetictests::constructorsTest() {
+    BigInt num1;        // should be 0 by default
+    QVERIFY(num1 == 0);
+
+    BigInt num2(0);     // 0 passed as an integer
+    QVERIFY(num2 == 0);
+
+    BigInt num3("0");   // 0 passed as a string
+    QVERIFY(num3 == 0);
+
+    BigInt num4(num3);  // object with value 0 passed to copy constructor
+    QVERIFY(num4 == 0);
+
+    BigInt num5(0.0);  // object with value 0 passed to copy constructor
+    QVERIFY(num5 == 0);
+
+
+    BigInt num21(1);     // 0 passed as an integer
+    auto txt = num21.getString(10);
+    QVERIFY(num2 != 0);
+
+    BigInt num31("0.1");   // 0 passed as a string
+    QVERIFY(num3 != 0);
+
+    BigInt num41(num3);  // object with value 0 passed to copy constructor
+    QVERIFY(num4 != 0);
+
+    BigInt num51(0.1);  // object with value 0 passed to copy constructor
+    QVERIFY(num5 != 0);
 
 }
 
+void arithmetictests::operatorsTest() {
+
+}
+
+
 QTEST_APPLESS_MAIN(arithmetictests)
 
 #include "tst_arithmetictests.moc"