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Ferdig intro til unit testing

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This commit is contained in:
Geir Okkenhaug Jerstad 2025-01-02 14:41:32 +01:00
parent 3cbfff200e
commit 8ff1f69ea3
2 changed files with 36 additions and 11 deletions
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25
Emne 3/UnitTesting/UnitTesting.Test/UnitTest1.cs
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@ -5,7 +5,30 @@ public class StatsTest
[Test] [Test]
public void TestWith3And4() public void TestWith3And4()
{ {
// arrange
var stats = new Stats(); var stats = new Stats();
Assert.Pass();
//act
stats.Add(3);
stats.Add(4);
// assert
Assert.AreEqual(2, stats.Count);
Assert.AreEqual(7, stats.Sum);
Assert.AreEqual(4, stats.Max);
Assert.AreEqual(3, stats.Min);
Assert.AreEqual(3.5, stats.Mean, 0.0001);
}
[Test]
public void TestEmptyStats()
{
var stats = new Stats();
Assert.AreEqual(0, stats.Count);
Assert.AreEqual(0, stats.Sum);
Assert.IsNull(stats.Max);
Assert.IsNull(stats.Min);
Assert.AreEqual(float.NaN, stats.Mean);
} }
} }

22
Emne 3/UnitTesting/UnitTesting/Stats.cs
View file

@ -6,14 +6,14 @@ public class Stats
{ {
public int Count {get; private set;} public int Count {get; private set;}
public int Sum {get; private set;} public int Sum {get; private set;}
public int Max {get; private set;} public int? Max { get; private set; }
public int Min {get; private set;} public int? Min {get; private set;}
public float Mean => (float)Sum / Count; public float Mean => (float)Sum / Count;
public void Add(int number) public void Add(int number)
{ {
if (Max == -1 || number > Max) Max = number; if (Max == null || number > Max) Max = number;
if (Min == -1 || number < Min) Min = number; if (Min == null || number < Min) Min = number;
Count++; Count++;
Sum += number; Sum += number;
} }
@ -23,20 +23,22 @@ public class Stats
return return
Format("Antall tall", Count) + Format("Antall tall", Count) +
Format("Sum", Sum) + Format("Sum", Sum) +
Format("Max", Max) + Format("Max", Max.Value) +
Format("Min", Min) + Format("Min", Min.Value) +
Format("Gjennomsnitt", Mean); Format("Gjennomsnitt", Mean);
} }
private static string Format(string label, float number) private static string Format(string label, float? number)
{ {
return FormatImpl(label, number.ToString("####.##")); if (number == null) return String.Empty;
return FormatImpl(label, number.Value.ToString("####.##"));
} }
private static string Format(string label, int number) private static string Format(string label, int? number)
{ {
return FormatImpl(label, number.ToString("####")); if (number == null) return String.Empty;
return FormatImpl(label, number.Value.ToString("####"));
} }
private static string FormatImpl(string label, string number) private static string FormatImpl(string label, string number)