public void TestNullInput()
{
//if the input is null, an error message is returned
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(null);
Assert.AreEqual(ErrorMessages.NULL_INPUT_MESSAGE, result);
}
public void TestInputContainsNullElement()
{
string[] input = new string[] { null };
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(input);
Assert.AreEqual(ErrorMessages.INVALID_INPUT_MESSAGE, result);
}
public void TestEmptyArrayInput()
{
//if the string input is empty the result is empty string
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(new string[] { });
Assert.AreEqual(string.Empty, result);
}
public void TestInputContainsTwoPackagesWithNoDependency()
{
//if the input contains 2 package names which have no other dependency,
//the result contains the package names.
InstallSequenceResolver resolver = new InstallSequenceResolver();
string[] input = new string[] { "KittenService:", "CamelCaser:" };
string result = resolver.GetInstallSequence(input);
Assert.AreEqual("KittenService, CamelCaser", result);
}
public void TestInputContainsSinglePackageWithNoDependency()
{
//if the input contains only 1 package which has no other dependency,
//the result contains only the package name.
InstallSequenceResolver resolver = new InstallSequenceResolver();
string[] input = new string[] { "KittenService:" };
string result = resolver.GetInstallSequence(input);
Assert.AreEqual("KittenService", result);
}
public void TestInputWithInvalidFormat()
{
//The input contains elements without colon (:)
string[] input = new string[]
{
"A: B",
"XYZ",
"P: Q"
};
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(input);
Assert.AreEqual(ErrorMessages.INVALID_INPUT_MESSAGE, result);
}
public void TestPackageWithSingleDependency()
{
//if the input contains 1 package depending on another,
//the result contains the package names with the dependency listed first
//input ["KittenService:CamelCaser","CamelCaser:"];
//result = "CamelCaser, KittenService"
InstallSequenceResolver resolver = new InstallSequenceResolver();
string[] input = new string[] { "KittenService:CamelCaser", "CamelCaser:" };
string result = resolver.GetInstallSequence(input);
Assert.AreEqual("CamelCaser, KittenService", result);
}
public void TestInputWithCycles()
{
string[] input = new string[]
{
"KittenService: ",
"Leetmeme: Cyberportal",
"Cyberportal: Ice",
"CamelCaser: KittenService",
"Fraudstream: ",
"Ice: Leetmeme"
};
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(input);
Assert.AreEqual(ErrorMessages.INPUT_CONTAINS_CYCLE, result);
}
public void TestValidInput()
{
string[] input = new string[]
{
"KittenService: ",
"Leetmeme: Cyberportal",
"Cyberportal: Ice",
"CamelCaser: KittenService",
"Fraudstream: ",
"Ice: "
};
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(input);
Assert.AreEqual("KittenService, Ice, Cyberportal, Leetmeme, CamelCaser, Fraudstream", result);
}
public void TestInputContainsEmptyStringAsPackageName()
{
string[] input = new string[]
{
"A: B",
": A",
"B: C",
"C: ",
"D: E",
"E: "
};
InstallSequenceResolver resolver = new InstallSequenceResolver();
string result = resolver.GetInstallSequence(input);
Assert.AreEqual(ErrorMessages.PACKAGENAME_IS_EMPTY, result);
}
