test(swiftpm): Test analyzing a definition file without deps

This is a test for the bug fixed by 14dc179.

Signed-off-by: Frank Viernau <[email protected]>

plugins/package-managers/swiftpm/src/funTest/assets/projects/synthetic/expected-output-project-without-deps.yml

@@ -0,0 +1,21 @@
+---
+project:
+  id: "SwiftPM::src/funTest/assets/projects/synthetic/project-without-deps/Package.swift:<REPLACE_REVISION>"
+  definition_file_path: "<REPLACE_DEFINITION_FILE_PATH>"
+  declared_licenses: []
+  declared_licenses_processed: {}
+  vcs:
+    type: ""
+    url: ""
+    revision: ""
+    path: ""
+  vcs_processed:
+    type: "Git"
+    url: "<REPLACE_URL_PROCESSED>"
+    revision: "<REPLACE_REVISION>"
+    path: "<REPLACE_PATH>"
+  homepage_url: ""
+  scopes:
+  - name: "dependencies"
+    dependencies: []
+packages: []

plugins/package-managers/swiftpm/src/funTest/assets/projects/synthetic/project-without-deps/Package.swift

@@ -0,0 +1,19 @@
+// swift-tools-version: 5.6
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "MyPackage",
+    platforms: [
+        .iOS(.v10)
+    ],
+    products: [
+        .library(
+            name: "MyPackage",
+            targets: ["MyPackage"]),
+    ],
+    targets: [
+        .target(name: "MyPackage")
+    ]
+)

plugins/package-managers/swiftpm/src/funTest/assets/projects/synthetic/project-without-deps/Sources/MyPackage/my-package.swift

@@ -0,0 +1,4 @@
+// The Swift Programming Language
+// https://docs.swift.org/swift-book
+
+print("Hello, world!")

plugins/package-managers/swiftpm/src/funTest/kotlin/SwiftPmFunTest.kt

@@ -88,4 +88,17 @@ class SwiftPmFunTest : WordSpec({
             result.withInvariantIssues().toYaml() should matchExpectedResult(expectedResultFile, definitionFile)
         }
     }
+
+    "Analyzing a definition file without dependencies" should {
+        "return the correct result" {
+            // Note: SwiftPM does not create a lockfile if there are no dependencies which is a corner case.
+            val definitionFile = getAssetFile("projects/synthetic/project-without-deps/Package.swift")
+            val expectedResultFile = getAssetFile("projects/synthetic/expected-output-project-without-deps.yml")
+
+            val result = create(PROJECT_TYPE, allowDynamicVersions = true)
+                .resolveSingleProject(definitionFile, resolveScopes = true)
+
+            result.toYaml() should matchExpectedResult(expectedResultFile, definitionFile)
+        }
+    }
 })