Multi-target project support

tests/CSharpLanguageServer.Tests/InitializationTests.fs

@@ -116,3 +116,35 @@ let testServerRegistersCapabilitiesWithTheClient () =
 
     Assert.IsTrue(client.ServerDidRespondTo("initialize"))
     Assert.IsTrue(client.ServerDidRespondTo("initialized"))
+
+
+[<TestCase>]
+let testMultiTargetProjectLoads () =
+    use client = setupServerClient { defaultClientProfile with LoggingEnabled=true }
+                                   "TestData/testMultiTargetProjectLoads"
+    client.StartAndWaitForSolutionLoad()
+
+    use classFile = client.Open("Project/Class.cs")
+
+    let hover0Params: HoverParams =
+        { TextDocument = { Uri = classFile.Uri }
+          Position = { Line = 2u; Character = 16u }
+          WorkDoneToken = None
+        }
+
+    let hover0: Hover option =
+        client.Request("textDocument/hover", hover0Params)
+
+    match hover0 with
+    | Some hover ->
+        match hover.Contents with
+        | U3.C1 c ->
+            Assert.AreEqual(MarkupKind.Markdown, c.Kind)
+            Assert.AreEqual("`` void Class.Method(string arg) ``", c.Value)
+        | _ -> failwith "C1 was expected"
+
+        Assert.IsTrue(hover.Range.IsNone)
+
+    | x -> failwithf "Some (U3.C1 c) was expected but '%s' received" (string x)
+
+    Assert.IsTrue(false)

tests/CSharpLanguageServer.Tests/TestData/testMultiTargetProjectLoads/Project/Class.cs

@@ -0,0 +1,6 @@
+class Class
+{
+    public void Method(string arg)
+    {
+    }
+}

tests/CSharpLanguageServer.Tests/TestData/testMultiTargetProjectLoads/Project/Project.csproj

@@ -0,0 +1,6 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFrameworks>net6.0;net8.0</TargetFrameworks>
+    </PropertyGroup>
+</Project>