Implement MapExtensionsKtTest

Author: RenanLukas

WordPress/src/test/java/org/wordpress/android/util/extensions/MapExtensionsKtTest.kt

@@ -0,0 +1,15 @@
+package org.wordpress.android.util.extensions
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+
+class MapExtensionsKtTest {
+    @Test
+    fun `Should filter null keys and values in filterNull`() {
+        mapOf(0 to "0", null to "1", 2 to null, 3 to "3", null to null)
+                .filterNull().forEach { (key, value) ->
+                    assertThat(key).isNotNull
+                    assertThat(value).isNotNull
+                }
+    }
+}