Fix Error CS0426 : The type name 'TestEnum' does not exist in the typ…

…e 'Foo' (#62)

Occurs when there's a class that matches the namespace name

Fixes #61

tests/NetEscapades.EnumGenerators.IntegrationTests/EnumInFooExtensionsTests.cs

@@ -0,0 +1,83 @@
+using System;
+using Foo;
+using Xunit;
+
+namespace NetEscapades.EnumGenerators.IntegrationTests;
+
+public class EnumInFooExtensionsTests : ExtensionTests<EnumInFoo>
+{
+    public static TheoryData<EnumInFoo> ValidEnumValues() => new()
+    {
+        EnumInFoo.First,
+        EnumInFoo.Second,
+        (EnumInFoo)3,
+    };
+
+    public static TheoryData<string> ValuesToParse() => new()
+    {
+        "First",
+        "Second",
+        "2nd",
+        "2ND",
+        "first",
+        "SECOND",
+        "3",
+        "267",
+        "-267",
+        "2147483647",
+        "3000000000",
+        "Fourth",
+        "Fifth",
+    };
+
+    protected override string ToStringFast(EnumInFoo value) => value.ToStringFast();
+    protected override bool IsDefined(EnumInFoo value) => EnumInFooExtensions.IsDefined(value);
+    protected override bool IsDefined(string name, bool allowMatchingMetadataAttribute) => EnumInFooExtensions.IsDefined(name, allowMatchingMetadataAttribute: false);
+#if READONLYSPAN
+    protected override bool IsDefined(in ReadOnlySpan<char> name, bool allowMatchingMetadataAttribute) => EnumInFooExtensions.IsDefined(name, allowMatchingMetadataAttribute: false);
+#endif
+    protected override bool TryParse(string name, out EnumInFoo parsed, bool ignoreCase, bool allowMatchingMetadataAttribute)
+        => EnumInFooExtensions.TryParse(name, out parsed, ignoreCase);
+#if READONLYSPAN
+    protected override bool TryParse(in ReadOnlySpan<char> name, out EnumInFoo parsed, bool ignoreCase, bool allowMatchingMetadataAttribute)
+        => EnumInFooExtensions.TryParse(name, out parsed, ignoreCase);
+#endif
+
+    [Theory]
+    [MemberData(nameof(ValidEnumValues))]
+    public void GeneratesToStringFast(EnumInFoo value) => GeneratesToStringFastTest(value);
+
+    [Theory]
+    [MemberData(nameof(ValidEnumValues))]
+    public void GeneratesIsDefined(EnumInFoo value) => GeneratesIsDefinedTest(value);
+
+    [Theory]
+    [MemberData(nameof(ValuesToParse))]
+    public void GeneratesIsDefinedUsingName(string name) => GeneratesIsDefinedTest(name, allowMatchingMetadataAttribute: false);
+
+#if READONLYSPAN
+    [Theory]
+    [MemberData(nameof(ValuesToParse))]
+    public void GeneratesIsDefinedUsingNameAsSpan(string name) => GeneratesIsDefinedTest(name.AsSpan(), allowMatchingMetadataAttribute: false);
+#endif
+
+    [Theory]
+    [MemberData(nameof(ValuesToParse))]
+    public void GeneratesTryParse(string name) => GeneratesTryParseTest(name, ignoreCase: false, allowMatchingMetadataAttribute: false);
+
+#if READONLYSPAN
+    [Theory]
+    [MemberData(nameof(ValuesToParse))]
+    public void GeneratesTryParseUsingSpan(string name) => GeneratesTryParseTest(name.AsSpan(), ignoreCase: false, allowMatchingMetadataAttribute: false);
+#endif
+
+    [Theory]
+    [MemberData(nameof(ValuesToParse))]
+    public void GeneratesTryParseIgnoreCase(string name) => GeneratesTryParseTest(name, ignoreCase: true, allowMatchingMetadataAttribute: false);
+
+    [Fact]
+    public void GeneratesGetValues() => GeneratesGetValuesTest(EnumInFooExtensions.GetValues());
+
+    [Fact]
+    public void GeneratesGetNames() => base.GeneratesGetNamesTest(EnumInFooExtensions.GetNames());
+}

tests/NetEscapades.EnumGenerators.IntegrationTests/Enums.cs

@@ -15,6 +15,26 @@ public enum EnumInSystem
     }
 }
 
+namespace Foo
+{
+    using NetEscapades.EnumGenerators;
+
+    // causes Error CS0426 : The type name 'TestEnum' does not exist in the type 'Foo'.
+    // workaround is to use global prefix 
+
+    public class Foo
+    {
+    }
+
+    [EnumExtensions]
+    public enum EnumInFoo
+    {
+        First = 0,
+        Second = 1,
+        Third = 2,
+    }
+}
+
 namespace NetEscapades.EnumGenerators.IntegrationTests
 {
     [EnumExtensions]

tests/NetEscapades.EnumGenerators.Tests/EnumGeneratorTests.cs

@@ -292,4 +292,27 @@ public enum MyEnum
             .DisableRequireUniquePrefix()
             .UseDirectory("Snapshots");
     }
+
+    [Fact]
+    public Task CanHandleNamespaceAndClassNameAreTheSame()
+    {
+        const string input = @"using NetEscapades.EnumGenerators;
+using System.ComponentModel.DataAnnotations;
+
+namespace Foo
+{
+    public class Foo {}
+  
+    [EnumExtensions]
+    public enum TestEnum
+    {
+        Value1
+    }
+}";
+        var (diagnostics, output) = TestHelpers.GetGeneratedOutput<EnumGenerator>(input);
+
+        Assert.Empty(diagnostics);
+        return Verifier.Verify(output).UseDirectory("Snapshots");
+    }
+
 }