Set the version in ConfigurationForgeryFactory as "nullable".

Fix related test.

Author: hamorillo

dd-sdk-android-core/src/test/kotlin/com/datadog/android/core/DatadogCoreInitializationTest.kt

@@ -625,6 +625,28 @@ internal class DatadogCoreInitializationTest {
         )
     }
 
+    @Test
+    fun `M apply app version W setVersion(appVersion) { with app version }`(
+        @StringForgery appVersion: String
+    ) {
+        // When
+        testedCore = DatadogCore(
+            appContext.mockInstance,
+            fakeInstanceId,
+            fakeInstanceName,
+            executorServiceFactory = { _, _, _, _ -> mockPersistenceExecutorService }
+        ).apply {
+            initialize(
+                fakeConfiguration.copy(
+                    version = appVersion
+                )
+            )
+        }
+
+        // Then
+        assertThat(testedCore.coreFeature.packageVersionProvider.version).isEqualTo(appVersion)
+    }
+
     // endregion
 
     companion object {

dd-sdk-android-core/src/test/kotlin/com/datadog/android/core/internal/CoreFeatureTest.kt

@@ -140,6 +140,9 @@ internal class CoreFeatureTest {
     @Forgery
     lateinit var fakeBuildId: UUID
 
+    @StringForgery(type = StringForgeryType.ALPHA_NUMERICAL)
+    lateinit var fakeVersion: String
+
     @BeforeEach
     fun `set up`() {
         CoreFeature.disableKronosBackgroundSync = true
@@ -158,6 +161,7 @@ internal class CoreFeatureTest {
         whenever(mockPersistenceExecutorService.execute(any())) doAnswer {
             it.getArgument<Runnable>(0).run()
         }
+        fakeConfig = fakeConfig.copy(version = fakeVersion)
     }
 
     @AfterEach

dd-sdk-android-core/src/test/kotlin/com/datadog/android/utils/forge/ConfigurationForgeryFactory.kt

@@ -21,7 +21,7 @@ internal class ConfigurationForgeryFactory :
             service = forge.aStringMatching("[a-z]+(\\.[a-z]+)+"),
             crashReportsEnabled = forge.aBool(),
             additionalConfig = forge.aMap { aString() to aString() },
-            version = forge.anAlphaNumericalString()
+            version = forge.aNullable { forge.anAlphaNumericalString() }
         )
     }
 }