Address more Wasm issues (#77)

* Fix SwiftWasm Glibc import issue

SwiftWasm introduced its own WASI module awhile back, so we should
import that instead of Glibc to avoid potential issues.

* Fix WASI import

* wip

* fix

* wip

Author: stephencelis

.github/workflows/ci.yml

@@ -32,17 +32,11 @@ jobs:
   wasm:
      name: Wasm
      runs-on: ubuntu-latest
-     strategy:
-       matrix:
-         include:
-           - { toolchain: wasm-5.7.1-RELEASE }
-
      steps:
        - uses: actions/checkout@v4
-       - run: echo "${{ matrix.toolchain }}" > .swift-version
-       - uses: swiftwasm/[email protected]
+       - uses: swiftwasm/[email protected]
          with:
-           shell-action: swift build
+           shell-action: carton test
 
   windows:
     name: Windows

Sources/XCTestDynamicOverlay/XCTFail.swift

@@ -164,7 +164,20 @@ public struct XCTFailContext: Sendable {
     }
   }
 
-  #if os(Windows)
+  #if canImport(Glibc)
+    import Glibc
+
+    private func ResolveXCTFail() -> XCTFailType? {
+      var hXCTest = dlopen("libXCTest.so", RTLD_NOW)
+      if hXCTest == nil { hXCTest = dlopen(nil, RTLD_NOW) }
+
+      if let pXCTFail = dlsym(hXCTest, "$s6XCTest7XCTFail_4file4lineySS_s12StaticStringVSutF") {
+        return unsafeCastToXCTFailType(pXCTFail)
+      }
+
+      return nil
+    }
+  #elseif canImport(WinSDK)
     import WinSDK
 
     private func ResolveXCTFail() -> XCTFailType? {
@@ -180,22 +193,15 @@ public struct XCTFailContext: Sendable {
 
       return nil
     }
-  #else
-    #if os(WASI)
-      import WASI
-    #else
-      import Glibc
-    #endif
+  #elseif canImport(XCTest)
+    import XCTest
 
     private func ResolveXCTFail() -> XCTFailType? {
-      var hXCTest = dlopen("libXCTest.so", RTLD_NOW)
-      if hXCTest == nil { hXCTest = dlopen(nil, RTLD_NOW) }
-
-      if let pXCTFail = dlsym(hXCTest, "$s6XCTest7XCTFail_4file4lineySS_s12StaticStringVSutF") {
-        return unsafeCastToXCTFailType(pXCTFail)
-      }
-
-      return nil
+      XCTFail
+    }
+  #else
+    private func ResolveXCTFail() -> XCTFailType? {
+      nil
     }
   #endif
 

Tests/XCTestDynamicOverlayTests/GeneratePlaceholderTests.swift

@@ -1,4 +1,4 @@
-#if !os(Linux) && !os(Windows)
+#if !os(Linux) && !os(WASI) && !os(Windows)
   import Foundation
   import XCTest
   import XCTestDynamicOverlay

Tests/XCTestDynamicOverlayTests/UnimplementedTests.swift

@@ -1,4 +1,4 @@
-#if !os(Linux) && !os(Windows)
+#if !os(Linux) && !os(WASI) && !os(Windows)
   import XCTest
 
   final class UnimplementedTests: XCTestCase {

Tests/XCTestDynamicOverlayTests/XCTContextTests.swift

@@ -1,4 +1,4 @@
-#if !os(Linux) && !os(Windows)
+#if !os(Linux) && !os(WASI) && !os(Windows)
   import XCTest
   import XCTestDynamicOverlay