diff --git a/tdd_intro/demo/01_bob/test.cpp b/tdd_intro/demo/01_bob/test.cpp
index dc9e42f..5840552 100644
--- a/tdd_intro/demo/01_bob/test.cpp
+++ b/tdd_intro/demo/01_bob/test.cpp
@@ -10,3 +10,45 @@ He answers 'Whatever.' to anything else.
 #include <gtest/gtest.h>
 #include <string>
 
+const std::string g_tellBobAnswer = "Sure";
+const std::string g_yellBobAnswer = "Whoa, chill out!";
+const std::string g_emptyBobAnswer = "Fine. Be that way!";
+const std::string g_defaultBobAnswer = "Whatever.";
+
+std::string CallBob(const std::string& str)
+{
+    if (str.empty())
+    {
+        return g_emptyBobAnswer;
+    }
+    if (str.back() == '!')
+    {
+        return g_yellBobAnswer;
+    }
+    else if (str.back() == '?')
+    {
+        return g_tellBobAnswer;
+    }
+
+    return g_defaultBobAnswer;
+}
+
+TEST(bob, AnswerSureOnQuestion)
+{
+    ASSERT_EQ(g_tellBobAnswer, CallBob("Are you ok?"));
+}
+
+TEST(bob, AnswerChillOnYell)
+{
+    ASSERT_EQ(g_yellBobAnswer, CallBob("Yell!!!!"));
+}
+
+TEST(bob, AnswerOnEmptyString)
+{
+    ASSERT_EQ(g_emptyBobAnswer, CallBob(""));
+}
+
+TEST(bob, AnswerOnAnythingElse)
+{
+    ASSERT_EQ(g_defaultBobAnswer, CallBob("Anything else"));
+}
diff --git a/tdd_intro/homework/00_intro/test.cpp b/tdd_intro/homework/00_intro/test.cpp
index be6959b..bfbaaab 100644
--- a/tdd_intro/homework/00_intro/test.cpp
+++ b/tdd_intro/homework/00_intro/test.cpp
@@ -7,3 +7,19 @@ For example: input: "cool" output: "looc"
 */
 
 #include <gtest/gtest.h>
+
+const std::string g_textToReverse = "Reversed";
+const std::string g_textReversed = "desreveR";
+
+std::string ReverseString(const std::string& str)
+{
+    std::string reversedStr(str);
+    std::reverse(reversedStr.begin(), reversedStr.end());
+
+    return reversedStr;
+}
+
+TEST(intro, StringIsReversed)
+{
+    ASSERT_EQ(g_textReversed, ReverseString(g_textToReverse));
+}
diff --git a/tdd_intro/homework/01_leap_year/test.cpp b/tdd_intro/homework/01_leap_year/test.cpp
index 4f186c8..40c8587 100644
--- a/tdd_intro/homework/01_leap_year/test.cpp
+++ b/tdd_intro/homework/01_leap_year/test.cpp
@@ -13,3 +13,36 @@ If your language provides a method in the standard library that does this look-u
 */
 
 #include <gtest/gtest.h>
+
+bool IsLeapYear(unsigned int year)
+{
+    if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0))
+    {
+        return true;
+    }
+
+    return false;
+}
+
+TEST(LeapYear, DivibleBy4)
+{
+    ASSERT_TRUE(IsLeapYear(1996));
+}
+
+TEST(LeapYear, DivisibleBy4ExceptDivisibleBy100)
+{
+    ASSERT_FALSE(IsLeapYear(1900));
+}
+
+TEST(LeapYear, DivisibleBy4ExceptDivisibleBy100UnlessDivisibleBy400)
+{
+    ASSERT_TRUE(IsLeapYear(2000));
+}
+
+TEST(LeapYear, Acceptence)
+{
+    ASSERT_TRUE(IsLeapYear(2020));
+    ASSERT_TRUE(IsLeapYear(2008));
+    ASSERT_FALSE(IsLeapYear(1990));
+    ASSERT_FALSE(IsLeapYear(1000));
+}
diff --git a/tdd_intro/homework/homework.pro b/tdd_intro/homework/homework.pro
index cf6c01b..07506ca 100644
--- a/tdd_intro/homework/homework.pro
+++ b/tdd_intro/homework/homework.pro
@@ -1,6 +1,7 @@
 TEMPLATE = subdirs
 
 SUBDIRS += \
+    00_intro \
     01_leap_year \
     02_ternary_numbers \
     03_bank_ocr \