Adding sample unit tests to SamplePackage example for swift wrapper to show case the usage w.r.t unit tests (#1220)

* adding sample test to the swift package example and linking libs and fwks to make swift test pass

* updating readme file

Author: absaroj

examples/swift/README.md

@@ -10,23 +10,27 @@ Details:
     - Include module.modulemap folder in Swift compiler search path.
     - Add OneDSSwift package in build phases dependency.
 
+<a name="to-be-linked"></a>
 - Libraries/Frameworks to link to Target
     - OneDSSwift # Package
     - SystemConfiguration
     - Network
-    # /usr/local/lib
-    - libmat.a
-    - libz.tbd
-    - libsqlite3.a
+    - `/usr/local/lib`
+        - libmat.a
+        - libz.tbd
+        - libsqlite3.a
 
 
 # SamplePackage
 
 Contains a simple swift package importing swift wrappers package and calling 1DS API via swift wrappers.
 
 Details:
-- Package Dependencies:
+- Package Dependencies
     - OneDSSwift: Package containing swift wrappers
 
-- Modules Included:
+- Modules Included
     - ObjCModule: Module exposing ObjC headers via module.modulemap file.
+
+- Libraries and Frameworks to link to Target
+    - [Same as mentioned in the SampleXcodeApp section](#to-be-linked)

examples/swift/SamplePackage/Package.swift

@@ -22,6 +22,24 @@ let package = Package(
             dependencies: [
                 .product(name: "OneDSSwift", package: "swift"),
             ],
+            swiftSettings: [
+                .unsafeFlags(["-Xcc", "-I../../../wrappers/swift/Modules/"]),
+            ],
+            linkerSettings: [
+                .unsafeFlags(["-L/usr/local/lib"]),
+                // Libs to be linked.
+                .linkedLibrary("mat"),
+                .linkedLibrary("sqlite3"),
+                .linkedLibrary("z"),
+                // Frameworks to be linked.
+                .linkedFramework("Network"),
+                .linkedFramework("SystemConfiguration"),
+            ]),
+        .testTarget(
+            name: "SampleTests",
+            dependencies: [
+                "SamplePackage",
+            ],
             swiftSettings: [
                 .unsafeFlags(["-Xcc", "-I../../../wrappers/swift/Modules/"])
             ]),

examples/swift/SamplePackage/Sources/SamplePackage/SamplePackage.swift

@@ -5,6 +5,8 @@
 
 import OneDSSwift
 
+public var packageName = "sample swift package"
+
 private var logger:Logger?
 private var token:String = ""
 

examples/swift/SamplePackage/Tests/SampleTests/SampleTests.swift

@@ -0,0 +1,11 @@
+import XCTest
+@testable import SamplePackage
+
+final class SamplePackageTests: XCTestCase {
+    func testExample() throws {
+        // This is an example of a functional test case.
+        // Use XCTAssert and related functions to verify your tests produce the correct
+        // results.
+        XCTAssertEqual(packageName, "sample swift package")
+    }
+}