[#0166] feat(leetcode): add README, unit test and C# solution

problems/0166-fraction-to-recurring-decimal/test/SolutionTests.cs

@@ -5,20 +5,23 @@ using Xunit;
 public class SolutionTests {
     private readonly Solution _s = new Solution();
 
-    [Fact]
-    public void Example1() {
-        // TODO: Arrange
-        // var input = new int[] { };
-        // var expected = 0;
-        // Act
-        // var got = _s.Solve(input);
-        // Assert.Equal(expected, got);
-        Assert.True(true);
+    [Theory]
+    [InlineData(4, 333, "0.(012)")]
+    [InlineData(1, 2, "0.5")]
+    [InlineData(1, 6, "0.1(6)")]
+    [InlineData(-50, 8, "-6.25")]
+    [InlineData(0, 5, "0")]
+    [InlineData(1, 7, "0.(142857)")]
+    public void FractionToDecimal_BasicAndRepeatingScenarios(int numerator, int denominator, string expected) {
+        var actual = _s.FractionToDecimal(numerator, denominator);
+
+        Assert.Equal(expected, actual);
     }
 
     [Fact]
-    public void EdgeCases() {
-        Assert.True(true);
+    public void FractionToDecimal_DenominatorOne_ReturnsIntegerString() {
+        var actual = _s.FractionToDecimal(2, 1);
+
+        Assert.Equal("2", actual);
     }
 }
-