Extract Provider (and rename them) to their own file and move fixture(s) there.

features/template/src/main/kotlin/io/element/android/features/template/TemplateState.kt

@@ -21,7 +21,3 @@ package io.element.android.features.template
 data class TemplateState(
     val eventSink: (TemplateEvents) -> Unit
 )
-
-fun aTemplateState() = TemplateState(
-    eventSink = {}
-)

features/template/src/main/kotlin/io/element/android/features/template/TemplateStateProvider.kt

@@ -0,0 +1,31 @@
+/*
+ * 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.template
+
+import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+
+open class TemplateStateProvider : PreviewParameterProvider<TemplateState> {
+    override val values: Sequence<TemplateState>
+        get() = sequenceOf(
+            aTemplateState(),
+            // Add other state here
+        )
+}
+
+fun aTemplateState() = TemplateState(
+    eventSink = {}
+)

features/template/src/main/kotlin/io/element/android/features/template/TemplateView.kt

@@ -23,7 +23,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.tooling.preview.PreviewParameter
-import androidx.compose.ui.tooling.preview.PreviewParameterProvider
 import io.element.android.libraries.designsystem.preview.ElementPreviewDark
 import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.designsystem.theme.components.Text
@@ -41,22 +40,14 @@ fun TemplateView(
     }
 }
 
-open class TemplateStatePreviewParameter : PreviewParameterProvider<TemplateState> {
-    override val values: Sequence<TemplateState>
-        get() = sequenceOf(
-            aTemplateState(),
-            // Add other state here
-        )
-}
-
 @Preview
 @Composable
-fun TemplateViewLightPreview(@PreviewParameter(TemplateStatePreviewParameter::class) state: TemplateState) =
+fun TemplateViewLightPreview(@PreviewParameter(TemplateStateProvider::class) state: TemplateState) =
     ElementPreviewLight { ContentToPreview(state) }
 
 @Preview
 @Composable
-fun TemplateViewDarkPreview(@PreviewParameter(TemplateStatePreviewParameter::class) state: TemplateState) =
+fun TemplateViewDarkPreview(@PreviewParameter(TemplateStateProvider::class) state: TemplateState) =
     ElementPreviewDark { ContentToPreview(state) }
 
 @Composable