Add tests.

features/login/impl/src/main/kotlin/io/element/android/features/login/impl/changeaccountprovider/form/DefaultHomeserverResolver.kt

@@ -49,10 +49,11 @@ class DefaultHomeserverResolver @Inject constructor(
         emit(Async.Uninitialized)
         // Debounce
         delay(300)
-        val clean = userInput.trim()
-        if (clean.length < 4) return@flow
+        val trimmedUserInput = userInput.trim()
+        if (trimmedUserInput.length < 4) return@flow
         emit(Async.Loading())
-        val list = getUrlCandidate(clean.ensureProtocol().removeSuffix("/"))
+        val candidateBase = trimmedUserInput.ensureProtocol().removeSuffix("/")
+        val list = getUrlCandidates(candidateBase)
         val currentList = Collections.synchronizedList(mutableListOf<HomeserverData>())
         // Run all the requests in parallel
         withContext(dispatchers.io) {
@@ -77,14 +78,14 @@ class DefaultHomeserverResolver @Inject constructor(
                 }
             }.awaitAll()
         }
-        // If list is empty, and the user as entered an URL, do not block the user.
+        // If list is empty, and the user has entered an URL, do not block the user.
         if (currentList.isEmpty()) {
-            if (userInput.isValidUrl()) {
+            if (trimmedUserInput.isValidUrl()) {
                 emit(
                     Async.Success(
                         listOf(
                             HomeserverData(
-                                homeserverUrl = userInput,
+                                homeserverUrl = trimmedUserInput,
                                 isWellknownValid = false,
                                 supportSlidingSync = false,
                             )
@@ -97,7 +98,7 @@ class DefaultHomeserverResolver @Inject constructor(
         }
     }
 
-    private fun getUrlCandidate(data: String): List<String> {
+    private fun getUrlCandidates(data: String): List<String> {
         return buildList {
             if (data.contains(".")) {
                 // TLD detected?

features/login/impl/src/main/kotlin/io/element/android/features/login/impl/changeaccountprovider/form/network/DefaultWellknownRequest.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.element.android.features.login.impl.changeaccountprovider.form.network
+
+import com.squareup.anvil.annotations.ContributesBinding
+import io.element.android.libraries.di.AppScope
+import io.element.android.libraries.network.RetrofitFactory
+import javax.inject.Inject
+
+@ContributesBinding(AppScope::class)
+class DefaultWellknownRequest @Inject constructor(
+    private val retrofitFactory: RetrofitFactory,
+) : WellknownRequest {
+    /**
+     * Return the WellKnown data, if found.
+     * @param baseUrl for instance https://matrix.org
+     */
+    override suspend fun execute(baseUrl: String): WellKnown {
+        val wellknownApi = retrofitFactory.create(baseUrl)
+            .create(WellknownAPI::class.java)
+        return wellknownApi.getWellKnown()
+    }
+}

features/login/impl/src/main/kotlin/io/element/android/features/login/impl/changeaccountprovider/form/network/WellknownRequest.kt

@@ -15,19 +15,10 @@
  */
 package io.element.android.features.login.impl.changeaccountprovider.form.network
 
-import io.element.android.libraries.network.RetrofitFactory
-import javax.inject.Inject
-
-class WellknownRequest @Inject constructor(
-    private val retrofitFactory: RetrofitFactory,
-) {
+interface WellknownRequest {
     /**
-     * Return the WellKnown data, if found.
+     * Return the WellKnown data, or throw an error if not found.
      * @param baseUrl for instance https://matrix.org
      */
-    suspend fun execute(baseUrl: String): WellKnown {
-        val wellknownApi = retrofitFactory.create(baseUrl)
-            .create(WellknownAPI::class.java)
-        return wellknownApi.getWellKnown()
-    }
+    suspend fun execute(baseUrl: String): WellKnown
 }