fix test on Linux

.travis.yml

@@ -29,12 +29,13 @@ matrix:
       mono: 4.4.2
     - os: osx
       mono: 4.8.0
-  allow_failures:
-    - os: linux
-      mono: latest
-    - os: linux
-      mono: 4.8.0
 
 #  allow_failures:
 #    - os: osx
 #      mono: latest
+#    - os: linux
+#      mono: latest
+#    - os: linux
+#      mono: 4.8.0
+#    - os: osx
+#      mono: latest

tests/service/ExprTests.fs

@@ -546,9 +546,15 @@ let ``Test Declarations project1`` () =
     let file1 = wholeProjectResults.AssemblyContents.ImplementationFiles.[0]
     let file2 = wholeProjectResults.AssemblyContents.ImplementationFiles.[1]
 
-    printDeclarations None (List.ofSeq file1.Declarations) 
-      |> Seq.toList 
-      |> shouldEqual
+    // This behaves slightly differently on Mono versions, 'null' is printed somethimes, 'None' other times
+    // Presumably this is very small differences in Mono reflection causing F# printing to change behavious
+    // For now just disabling this test. See https://github.com/fsharp/FSharp.Compiler.Service/pull/766
+    let filterHack l = 
+        l |> List.map (fun (s:string) -> 
+            s.Replace("ILArrayShape [(Some 0, None)]", "ILArrayShapeFIX")
+             .Replace("ILArrayShape [(Some 0, null)]", "ILArrayShapeFIX"))
+
+    let expected = 
           ["type M"; "type IntAbbrev"; "let boolEx1 = True @ (6,14--6,18)";
            "let intEx1 = 1 @ (7,13--7,14)"; "let int64Ex1 = 1 @ (8,15--8,17)";
            "let tupleEx1 = (1,1) @ (9,16--9,21)";
@@ -602,7 +608,7 @@ let ``Test Declarations project1`` () =
            "let functionThatUsesObjectExpression(unitVar0) = { new Object() with member x.ToString(unitVar1) = Operators.ToString<Microsoft.FSharp.Core.int> (888)  } @ (114,3--114,55)";
            "let functionThatUsesObjectExpressionWithInterfaceImpl(unitVar0) = { new Object() with member x.ToString(unitVar1) = Operators.ToString<Microsoft.FSharp.Core.int> (888) interface System.IComparable with member x.CompareTo(y) = 0 } :> System.IComparable @ (117,3--120,38)";
            "let testFunctionThatUsesUnitsOfMeasure(x) (y) = Operators.op_Addition<Microsoft.FSharp.Core.float<'u>,Microsoft.FSharp.Core.float<'u>,Microsoft.FSharp.Core.float<'u>> (x,y) @ (122,70--122,75)";
-           "let testFunctionThatUsesAddressesAndByrefs(x) = let mutable w: Microsoft.FSharp.Core.int = 4 in let y1: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = x in let y2: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = &w in let arr: Microsoft.FSharp.Core.int Microsoft.FSharp.Core.[] = [|3; 4|] in let r: Microsoft.FSharp.Core.int Microsoft.FSharp.Core.ref = Operators.Ref<Microsoft.FSharp.Core.int> (3) in let y3: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = [I_ldelema (NormalAddress,false,ILArrayShape [(Some 0, null)],TypeVar 0us)](arr,0) in let y4: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = &r.contents in let z: Microsoft.FSharp.Core.int = Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (x,y1),y2),y3) in (w <- 3; (x <- 4; (y2 <- 4; (y3 <- 5; Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (z,x),y1),y2),y3),y4),IntrinsicFunctions.GetArray<Microsoft.FSharp.Core.int> (arr,0)),r.contents))))) @ (125,16--125,17)";
+           "let testFunctionThatUsesAddressesAndByrefs(x) = let mutable w: Microsoft.FSharp.Core.int = 4 in let y1: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = x in let y2: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = &w in let arr: Microsoft.FSharp.Core.int Microsoft.FSharp.Core.[] = [|3; 4|] in let r: Microsoft.FSharp.Core.int Microsoft.FSharp.Core.ref = Operators.Ref<Microsoft.FSharp.Core.int> (3) in let y3: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = [I_ldelema (NormalAddress,false,ILArrayShape [(Some 0, None)],TypeVar 0us)](arr,0) in let y4: Microsoft.FSharp.Core.byref<Microsoft.FSharp.Core.int> = &r.contents in let z: Microsoft.FSharp.Core.int = Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (x,y1),y2),y3) in (w <- 3; (x <- 4; (y2 <- 4; (y3 <- 5; Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (z,x),y1),y2),y3),y4),IntrinsicFunctions.GetArray<Microsoft.FSharp.Core.int> (arr,0)),r.contents))))) @ (125,16--125,17)";
            "let testFunctionThatUsesStructs1(dt) = dt.AddDays(3) @ (139,57--139,72)";
            "let testFunctionThatUsesStructs2(unitVar0) = let dt1: System.DateTime = DateTime.get_Now () in let mutable dt2: System.DateTime = DateTime.get_Now () in let dt3: System.TimeSpan = Operators.op_Subtraction<System.DateTime,System.DateTime,System.TimeSpan> (dt1,dt2) in let dt4: System.DateTime = dt1.AddDays(3) in let dt5: Microsoft.FSharp.Core.int = dt1.get_Millisecond() in let dt6: Microsoft.FSharp.Core.byref<System.DateTime> = &dt2 in let dt7: System.TimeSpan = Operators.op_Subtraction<System.DateTime,System.DateTime,System.TimeSpan> (dt6,dt4) in dt7 @ (142,7--142,10)";
            "let testFunctionThatUsesWhileLoop(unitVar0) = let mutable x: Microsoft.FSharp.Core.int = 1 in (while Operators.op_LessThan<Microsoft.FSharp.Core.int> (x,100) do x <- Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (x,1) done; x) @ (152,15--152,16)";
@@ -636,6 +642,12 @@ let ``Test Declarations project1`` () =
            "type LetLambda";
            "let f = ((); fun a -> fun b -> Operators.op_Addition<Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (a,b)) @ (246,8--247,24)";
            "let letLambdaRes = Operators.op_PipeRight<(Microsoft.FSharp.Core.int * Microsoft.FSharp.Core.int) Microsoft.FSharp.Collections.list,Microsoft.FSharp.Core.int Microsoft.FSharp.Collections.list> (Cons((1,2),Empty()),let mapping: Microsoft.FSharp.Core.int * Microsoft.FSharp.Core.int -> Microsoft.FSharp.Core.int = fun tupledArg -> let a: Microsoft.FSharp.Core.int = tupledArg.Item0 in let b: Microsoft.FSharp.Core.int = tupledArg.Item1 in (LetLambda.f () a) b in fun list -> ListModule.Map<Microsoft.FSharp.Core.int * Microsoft.FSharp.Core.int,Microsoft.FSharp.Core.int> (mapping,list)) @ (249,19--249,71)"] 
+
+    printDeclarations None (List.ofSeq file1.Declarations) 
+      |> Seq.toList 
+      |> filterHack
+      |> shouldEqual (filterHack expected)
+
     ()
 #endif