Create line ending assertion helper for tests

Author: tboby

tests/Helpers.fs

@@ -0,0 +1,32 @@
+module Ionide.KeepAChangelog.Tasks.Test.Helpers
+
+open System.Runtime.CompilerServices
+open Faqt
+open Faqt.AssertionHelpers
+
+[<Extension>]
+type Assertions =
+
+    /// Asserts that the subject is equal to the specified string when CLRF is replaced with LF in both raw and
+    /// escaped forms.
+    [<Extension>]
+    static member BeLineEndingEquivalent(t: Testable<string>, expected: string, ?because) : And<string> =
+        use _ = t.Assert()
+
+        if isNull expected then
+            nullArg (nameof expected)
+
+        if isNull t.Subject then
+            t.With("Expected", expected).With("But was", t.Subject).Fail(because)
+
+        let expectedNormalised = expected.Replace("\r\n", "\n").Replace("\\r\\n", "\\n")
+
+        let subjectNormalised = t.Subject.Replace("\r\n", "\n").Replace("\\r\\n", "\\n")
+
+        if subjectNormalised <> expectedNormalised then
+            t
+                .With("Expected", expectedNormalised)
+                .With("But was", subjectNormalised)
+                .Fail(because)
+
+        And(t)

tests/IntegrationTests.fs

@@ -1,13 +1,14 @@
 module Tests.IntegrationTests
 
 open System.IO
-open System.Runtime.CompilerServices
 open System.Threading.Tasks
+open Ionide.KeepAChangelog.Tasks.Test
 open Microsoft.VisualStudio.TestTools.UnitTesting
 open BlackFox.CommandLine
 open Faqt
 open SimpleExec
 open Workspace
+open Helpers
 
 module Utils =
     let packAndGetPackageProperties projectName =
@@ -40,11 +41,6 @@ module Utils =
             workingDirectory = Workspace.fixtures.``.``
         )
 
-type StringHelper =
-    [<Extension>]
-    static member ReplaceEscapedNewLines(s: string) =
-        s.ReplaceLineEndings().Replace("\\r\\n", "\\n")
-
 [<TestClass>]
 type IntegrationTests() =
 
@@ -90,9 +86,8 @@ type IntegrationTests() =
             let! struct (stdout, _) = Utils.packAndGetPackageProperties projectName
 
             stdout
-                .ReplaceEscapedNewLines()
                 .Should()
-                .Be(
+                .BeLineEndingEquivalent(
                     """{
   "Properties": {
     "Version": "0.1.0",
@@ -115,9 +110,8 @@ type IntegrationTests() =
             let! struct (stdout, _) = Utils.packAndGetPackageProperties projectName
 
             stdout
-                .ReplaceEscapedNewLines()
                 .Should()
-                .Be(
+                .BeLineEndingEquivalent(
                     """{
   "Properties": {
     "Version": "0.1.0",
@@ -140,9 +134,8 @@ type IntegrationTests() =
             let! struct (stdout, _) = Utils.packAndGetPackageProperties projectName
 
             stdout
-                .ReplaceEscapedNewLines()
                 .Should()
-                .Be(
+                .BeLineEndingEquivalent(
                     """{
   "Properties": {
     "Version": "1.0.0",
@@ -165,9 +158,8 @@ type IntegrationTests() =
             let! struct (stdout, _) = Utils.packAndGetPackageProperties projectName
 
             stdout
-                .ReplaceEscapedNewLines()
                 .Should()
-                .Be(
+                .BeLineEndingEquivalent(
                     """{
   "Properties": {
     "Version": "1.0.0",

tests/Ionide.KeepAChangelog.Tasks.Test.fsproj

@@ -7,6 +7,7 @@
 
     <ItemGroup>
         <Compile Include="Workspace.fs" />
+        <Compile Include="Helpers.fs" />
         <Compile Include="UnitTests.fs" />
         <Compile Include="IntegrationTests.fs" />
     </ItemGroup>

tests/UnitTests.fs

@@ -1,12 +1,14 @@
 module Tests.UnitTests
 
+open Ionide.KeepAChangelog.Tasks.Test
 open Moq
 open Microsoft.Build.Framework
 open Ionide.KeepAChangelog.Tasks
 open Faqt
 open Faqt.Operators
 open Microsoft.VisualStudio.TestTools.UnitTesting
 open Workspace
+open Helpers
 
 type TestContext = {
     BuildEngine: Mock<IBuildEngine>
@@ -121,7 +123,7 @@ type UnitTests() =
 
         %myTask.LatestReleaseNotes
             .Should()
-            .Be(
+            .BeLineEndingEquivalent(
                 """### Added
 
 - Created the package