add tests for AddVM

Author: hoc081098

feature-add/src/test/java/com/hoc/flowmvi/ui/add/AddVMTest.kt

@@ -265,7 +265,7 @@ class AddVMTest : BaseMviViewModelTest<ViewIntent, ViewState, SingleEvent, AddVM
   }
 
   @Test
-  fun test_withSubmitIntentFormValid_callAddUser() {
+  fun test_withSubmitIntentWhenFormValid_callAddUserAndReturnsStateWithLoading() {
     val user = User(
       id = "",
       email = EMAIL,
@@ -324,4 +324,31 @@ class AddVMTest : BaseMviViewModelTest<ViewIntent, ViewState, SingleEvent, AddVM
       coVerify { addUser(user) }
     }
   }
+
+  @Test
+  fun test_withSubmitIntentWhenFormInvalid_doNothing() {
+    test(
+      vmProducer = { vm },
+      intents = flowOf(ViewIntent.Submit),
+      intentsBeforeCollecting = flowOf(
+        ViewIntent.EmailChanged(""),
+        ViewIntent.FirstNameChanged(""),
+        ViewIntent.LastNameChanged(""),
+      ),
+      expectedStates = listOf(
+        ViewState(
+          errors = ALL_ERRORS,
+          isLoading = false,
+          emailChanged = false,
+          firstNameChanged = false,
+          lastNameChanged = false,
+          email = "",
+          firstName = "",
+          lastName = "",
+        ),
+      ).mapRight(),
+      expectedEvents = emptyList(),
+      delayAfterDispatchingIntents = Duration.seconds(1),
+    )
+  }
 }

mvi/mvi-testing/src/main/java/com/flowmvi/mvi_testing/BaseMviViewModelTest.kt

@@ -137,10 +137,10 @@ abstract class BaseMviViewModelTest<
 fun <T> Iterable<T>.mapRight(): List<Either<(T) -> Unit, T>> = map { it.right() }
 
 private fun <T> List<T>.joinToStringWithIndex(): String {
-  return withIndex().joinToString(
+  return if (isEmpty()) "[]" else withIndex().joinToString(
     separator = ",\n",
     prefix = "[\n",
-    postfix = "]",
+    postfix = "\n]",
   ) { (i, v) ->
     "   [$i]: $v"
   }