Refactor PrefixContainerTest to include a new test case for checking if the prefix matches exactly with keys

Author: Sami Daniel Santos Silva

src/Mvc/Mvc.Core/test/ModelBinding/PrefixContainerTest.cs

@@ -180,6 +180,23 @@ public void ContainsPrefix_HasEntries_PartialAndPrefixMatch_WithSquareBrace(int
         Assert.True(result);
     }
 
+    [Theory]
+    [InlineData("parameter")]
+    [InlineData("foo")]
+    [InlineData("bar")]
+    public void ContainsPrefix_ReturnFalse_WhenPrefixMatchesExactly_WithKeys(string prefix)
+    {
+        // Arrange
+        var keys = new string[] { "parameter", "foo", "bar" };
+        var container = new PrefixContainer(keys);
+
+        // Act
+        var result = container.ContainsPrefix(prefix);
+
+        // Assert
+        Assert.False(result);
+    }
+
     [Theory]
     [InlineData("")]
     [InlineData("foo")]