Duplicate e2e tests for Swift SDKs

Those files are copied from test/toolchain and modified to use the
Swift SDK instead of the toolchain.

Author: kateinoigakukun

.github/workflows/build-toolchain.yml

@@ -319,6 +319,15 @@ jobs:
           name: ${{ matrix.target }}-test-results
           path: ./swift-test-results.tar.gz
 
+      - name: Run integration tests (Swift SDK)
+        if: ${{ matrix.run_e2e_test && matrix.only_swift_sdk }}
+        run: |
+          docker exec swiftwasm-ci-buildbot /bin/bash -lc \
+            "./llvm-project/llvm/utils/lit/lit.py \
+              --param swift-sdk=wasm32-unknown-wasi \
+              --param swift-sdks-path=./swiftwasm-build/tools/swift-sdk-generator/Bundles \
+              --param scheme=main ./swiftwasm-build/test -vv"
+
       - name: Cleanup docker volume
         if: ${{ matrix.container != null }}
         run: |

test/lit.cfg

@@ -23,6 +23,7 @@ config.test_exec_root = lit_config.params.get(
 config.available_features.add("platform="+platform.system())
 config.available_features.add("scheme="+lit_config.params.get("scheme", "main"))
 
+# --param package-path=PATH
 package_path = lit_config.params.get("package-path")
 if package_path:
     package_path = os.path.abspath(package_path)
@@ -31,6 +32,27 @@ else:
     lit_config.warning("'--param package-path=PATH' is not set, skipping toolchain tests")
 config.swift_package_path = package_path
 
+# --param swift-sdk=<swift-sdk-id>
+swift_sdk = lit_config.params.get("swift-sdk")
+if swift_sdk:
+    lit_config.note(f"testing Swift SDK: {swift_sdk}")
+else:
+    lit_config.warning("'--param swift-sdk=<swift-sdk-id>' is not set, skipping Swift SDK tests")
+config.swift_sdk = swift_sdk
+
+# --param swift-sdks-path=<swift-sdks-path>
+config.swift_sdks_path = lit_config.params.get("swift-sdks-path")
+
+# --param base-toolchain-path=PATH
+base_toolchain_path = lit_config.params.get("base-toolchain-path")
+if base_toolchain_path:
+    base_toolchain_path = os.path.abspath(base_toolchain_path)
+    lit_config.note(f"using base toolchain: {base_toolchain_path}")
+else:
+    base_toolchain_path = os.path.abspath(os.path.join(workspace_root, "build", "Packaging", "base-snapshot"))
+    lit_config.note(f"using default base toolchain: {base_toolchain_path}")
+config.base_toolchain_path = base_toolchain_path
+
 def llvm_tool_path(tool):
     candidates = []
     llvm_bin = lit_config.params.get("llvm-bin")

test/swift-sdk/Inputs/clang-module-example/Package.swift

@@ -0,0 +1,11 @@
+// swift-tools-version: 5.8
+
+import PackageDescription
+
+let package = Package(
+    name: "ClangModuleExample",
+    targets: [
+        .executableTarget(name: "Main", dependencies: ["_CModule"]),
+        .target(name: "_CModule"),
+    ]
+)

test/swift-sdk/Inputs/clang-module-example/Sources/Main/ClangModuleExample.swift

@@ -0,0 +1 @@
+import _CModule

test/swift-sdk/Inputs/clang-module-example/Sources/_CModule/_CModule.c

@@ -0,0 +1 @@
+#include "_CModule.h"

test/swift-sdk/Inputs/clang-module-example/Sources/_CModule/include/_CModule.h

@@ -0,0 +1,4 @@
+#include <stddef.h> // Clang header should be found
+#if __wasi__
+# include <wasi/api.h> // wasi-libc header
+#endif

test/swift-sdk/Inputs/clang-module-example/Sources/_CModule/include/module.modulemap

@@ -0,0 +1,3 @@
+module _CModule {
+  header "_CModule.h"
+}

test/swift-sdk/Inputs/imports.swift

@@ -0,0 +1,17 @@
+import Foundation
+import XCTest
+import WASILibc
+
+#if canImport(FoundationXML)
+  import FoundationXML
+#endif
+// FIXME: This should be supported on swiftwasm branch
+// #if canImport(FoundationNetworking)
+//   #error("FoundationNetworking should not be able to import now")
+// #endif
+
+public func main() {
+  _ = Date()
+  _ = UUID()
+  _ = URL(string: "https://example.com")!
+}

test/swift-sdk/clang-module.swift

@@ -0,0 +1,6 @@
+// RUN: rm -rf %t.dir
+// RUN: mkdir -p %t.dir
+// RUN: %{swift} build --package-path %S/Inputs/clang-module-example --scratch-path %t.dir --triple wasm32-unknown-wasi --static-swift-stdlib
+
+// Skipping this test on main until we include swift-testing in the SDK
+// REQUIRES: GH-5587

test/swift-sdk/foundation/Bundle.swift

@@ -0,0 +1,13 @@
+// RUN: %{target_simple_swift_build}
+// RUN: %{wasm_run} --dir %t.dir::/tmp --dir %t.dir::/tmp2 %t.dir/.build/debug/Check.wasm | %{FileCheck} %s
+// REQUIRES: FileCheck && scheme=main
+
+import Foundation
+
+// Bundle.main is derived from the path of the executable and cwd
+// CHECK: bundlePath: /tmp
+chdir("/tmp")
+print("bundlePath:", Bundle.main.bundlePath)
+
+// CHECK: Bundle(path:).bundlePath: /tmp2
+print("Bundle(path:).bundlePath:", Bundle(path: "/tmp2")?.bundlePath ?? "nil")