[Commonizer] Allow empty SharedCommonizerTarget

native/commonizer-api/test/org/jetbrains/kotlin/commonizer/CommonizerTargetIdentityStringTest.kt

@@ -85,6 +85,11 @@ class CommonizerTargetIdentityStringTest {
         )
     }
 
+    @Test
+    fun `empty shared target`() {
+        assertEquals(SharedCommonizerTarget(emptySet<CommonizerTarget>()), parseCommonizerTarget("()"))
+    }
+
     @Test(expected = IllegalArgumentException::class)
     fun `fail parsing CommonizerTarget 1`() {
         parseCommonizerTarget("xxx,")
@@ -95,11 +100,6 @@ class CommonizerTargetIdentityStringTest {
         parseCommonizerTarget("")
     }
 
-    @Test(expected = IllegalArgumentException::class)
-    fun `fail parsing CommonizerTarget 3`() {
-        parseCommonizerTarget("()")
-    }
-
     @Test(expected = IllegalArgumentException::class)
     fun `fail parsing CommonizerTarget 4`() {
         parseCommonizerTarget("(xxx")

native/commonizer-api/test/org/jetbrains/kotlin/commonizer/CommonizerTargetPrettyNameTest.kt

@@ -72,9 +72,11 @@ class CommonizerTargetPrettyNameTest {
         )
     }
 
-    @Test(expected = IllegalArgumentException::class)
+    @Test
     fun sharedTargetNoInnerTargets() {
-        SharedCommonizerTarget(emptySet<CommonizerTarget>())
+        assertEquals(
+            "[]", SharedCommonizerTarget(emptySet<CommonizerTarget>()).prettyName
+        )
     }
 
     private companion object {