Move fsharpqa/Libraries/Core/Collections test cases to NUnit (#9292)

* Moved some test cased to NUnit

* Moved List.head and List.tail test cases to NUnit

* Split tests into multiple files

* Moved IEnumerable test cases to NUnit

* Removed migrated test cases

* Fixed positions in List tests

tests/fsharp/Compiler/Libraries/Core/Collections/CollectionTests.fs

@@ -0,0 +1,28 @@
+// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.
+
+namespace FSharp.Compiler.UnitTests
+
+open NUnit.Framework
+
+[<TestFixture>]
+module ``Array2D Tests`` =
+
+    [<Test>]
+    let ``Iter should not throw on non-zero based 2D arrays``() =
+        // Regression for FSHARP1.0: 5919
+        // bug in array2D functions would cause iter to blow up
+
+        let a = Array2D.createBased 1 5 10 10 0.0
+        let testDelegate = TestDelegate (fun _ -> a |> Array2D.iter (printf "%f"))
+
+        Assert.DoesNotThrow testDelegate
+
+    [<Test>]
+    let ``Iteri should not throw on non-zero based 2D arrays``() =
+        // Regression for FSHARP1.0: 5919
+        // bug in array2D functions would cause iteri to blow up
+
+        let a = Array2D.createBased 1 5 10 10 0.0
+        let testDelegate = TestDelegate (fun _ -> a |> Array2D.iteri (fun _ _ x -> printf "%f" x))
+
+        Assert.DoesNotThrow testDelegate

tests/fsharp/Compiler/Libraries/Core/Collections/IEnumerableTests.fs

@@ -0,0 +1,43 @@
+// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.
+
+namespace FSharp.Compiler.UnitTests
+
+open NUnit.Framework
+
+[<TestFixture>]
+module ``IEnumerable Tests`` =
+
+    // Regression test for FSHARP1.0:4726
+    // Makes sure that the .Dispose() method, if available, in invoked on IEnumerable
+
+    let mutable dispose_called_in_E = 0    // we expect this to be incremented 3 times
+    let mutable dispose_called_in_C = 0    // we expect this to be incremented once (=this is what the bug was about, i.e. .Dispose() was never invoked)
+
+    type E(_c:int) = class
+        interface System.IDisposable with
+            member __.Dispose () = dispose_called_in_E <- dispose_called_in_E + 1
+    end
+
+    type C() = class
+        let mutable i = 0
+        interface System.Collections.IEnumerator with
+            member __.Current with get () = new E(i) :> obj
+            member __.MoveNext () = 
+                i <- i+1 
+                i<4
+            member __.Reset () = i <- 0
+        interface System.Collections.IEnumerable with
+            member x.GetEnumerator () = x :> System.Collections.IEnumerator
+
+        interface System.IDisposable with
+            member __.Dispose () = dispose_called_in_C <- dispose_called_in_C + 1
+        end
+    end
+
+    [<Test>]
+    let ``Dispose``() =
+        let _ = Seq.cast (new C()) |> Seq.map (fun x -> use o = x; 
+                                                        o) |> Seq.length
+
+        Assert.areEqual 3 dispose_called_in_E
+        Assert.areEqual 1 dispose_called_in_C

tests/fsharp/Compiler/Libraries/Core/Collections/ListTests.fs

@@ -0,0 +1,59 @@
+// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.
+
+namespace FSharp.Compiler.UnitTests
+
+open NUnit.Framework
+open FSharp.Compiler.SourceCodeServices
+
+[<TestFixture>]
+module ``List Tests`` =
+
+    [<Test>]
+    let ``List hd should not exist``() =
+        // Regression test for FSharp1.0:5641
+        // Title: List.hd/tl --> List.head/tail
+
+        CompilerAssert.TypeCheckSingleError
+            """
+List.hd [1] |> ignore
+            """
+            FSharpErrorSeverity.Error
+            39
+            (2, 6, 2, 8)
+            "The value, constructor, namespace or type 'hd' is not defined."
+
+
+
+    [<Test>]
+    let ``List tl should not exist``() =
+        // Regression test for FSharp1.0:5641
+        // Title: List.hd/tl --> List.head/tail
+
+        CompilerAssert.TypeCheckSingleError
+            """
+List.tl [1] |> ignore
+            """
+            FSharpErrorSeverity.Error
+            39
+            (2, 6, 2, 8)
+            "The value, constructor, namespace or type 'tl' is not defined."
+
+    [<Test>]
+    let ``List head of empty list``() =
+        let testDelegate = TestDelegate (fun _ -> (List.head [] |> ignore))
+
+        Assert.Throws<System.ArgumentException> testDelegate |> ignore
+
+    [<Test>]
+    let ``List tail of empty list``() =
+        let testDelegate = TestDelegate (fun _ -> (List.tail [] |> ignore))
+
+        Assert.Throws<System.ArgumentException> testDelegate |> ignore
+
+    [<Test>]
+    let ``List head and tail``() =
+        Assert.areEqual 1 (List.head [1 .. 10])
+        Assert.areEqual "a" (List.head ["a"])
+        Assert.areEqual [2 .. 10] (List.tail [1 .. 10])
+        Assert.areEqual [] (List.tail [1])
+        Assert.areEqual (List.head (List.tail ['a'; 'a'])) (List.head ['a'; 'a'])

tests/fsharp/Compiler/Libraries/Core/Collections/MapTests.fs

@@ -0,0 +1,17 @@
+// Copyright (c) Microsoft Corporation.  All Rights Reserved.  See License.txt in the project root for license information.
+
+namespace FSharp.Compiler.UnitTests
+
+open NUnit.Framework
+
+[<TestFixture>]
+module ``Map Tests`` =
+
+    [<Test>]
+    let ``Equality should be implemented on map``() =
+        // Dev11:19569 - this used to throw an ArgumentException saying Object didn't implement IComparable
+
+        let m = Map.ofArray [| 1, obj() |]
+        let testDelegate = TestDelegate (fun _ -> (m = m) |> ignore)
+
+        Assert.DoesNotThrow testDelegate

tests/fsharp/FSharpSuite.Tests.fsproj

@@ -78,6 +78,10 @@
     <Compile Include="Compiler\Stress\LargeExprTests.fs" />
     <Compile Include="Compiler\Regressions\IndexerRegressionTests.fs" />
     <Compile Include="Compiler\Regressions\ForInDoMutableRegressionTest.fs" />
+    <Compile Include="Compiler\Libraries\Core\Collections\IEnumerableTests.fs" />
+    <Compile Include="Compiler\Libraries\Core\Collections\MapTests.fs" />
+    <Compile Include="Compiler\Libraries\Core\Collections\CollectionTests.fs" />
+    <Compile Include="Compiler\Libraries\Core\Collections\ListTests.fs" />
     <None Include="app.config" />
     <None Include="update.base.line.with.actuals.fsx" />