add client id and session id setter (#133)

Author: stanlp1

library/src/main/java/io/constructor/core/ConstructorIo.kt

@@ -126,11 +126,25 @@ object ConstructorIo {
      */
     fun getSessionId() = preferenceHelper.getSessionId()
 
+    /**
+     *  Sets the sessionId
+     */
+    fun setSessionId(sessionId: Int) {
+        preferenceHelper.setSessionId(sessionId);
+    }
+
     /**
      * Returns the current client identifier (a random GUID assigned to the app running on the device)
      */
     fun getClientId() = preferenceHelper.id
 
+    /**
+     *  Sets the clientId
+     */
+    fun setClientId(clientId: String) {
+        preferenceHelper.id = clientId;
+    }
+
     internal fun testInit(context: Context?, constructorIoConfig: ConstructorIoConfig, dataManager: DataManager, preferenceHelper: PreferencesHelper, configMemoryHolder: ConfigMemoryHolder) {
         if (context == null) {
             throw IllegalStateException("Context is null, please init library using ConstructorIo.with(context)")

library/src/main/java/io/constructor/data/local/PreferencesHelper.kt

@@ -62,6 +62,10 @@ constructor(@ConstructorSdk val preferences: SharedPreferences) {
         return preferences.getInt(SESSION_ID, 1)
     }
 
+    fun setSessionId(sessionId: Int) {
+        preferences.edit().putInt(SESSION_ID, sessionId).apply()
+    }
+
     internal fun resetSession(sessionIncrementAction: ((String) -> Unit)?): Int {
         val sessionId = 1
         preferences.edit().putInt(SESSION_ID, sessionId).apply()

library/src/test/java/io/constructor/data/local/PreferencesHelperTest.kt

@@ -57,6 +57,12 @@ class PreferencesHelperTest {
         assertEquals(1, preferencesHelper.getSessionId())
     }
 
+    @Test
+    fun saveAndRetrieveSessionId() {
+        preferencesHelper.setSessionId(123);
+        assertEquals(123, preferencesHelper.getSessionId())
+    }
+
     @Test
     fun getSessionIdAfter30Minutes() {
         preferencesHelper.resetSession(null)