feat(chat): redesign attachment picker tray (#1130)

app/src/test/java/com/m57/hermescontrol/ui/chat/components/AttachmentTrayPositionProviderTest.kt

@@ -0,0 +1,40 @@
+package com.m57.hermescontrol.ui.chat.components
+
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.IntRect
+import androidx.compose.ui.unit.IntSize
+import androidx.compose.ui.unit.LayoutDirection
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class AttachmentTrayPositionProviderTest {
+    private val provider = AttachmentTrayPositionProvider(marginPx = 16)
+    private val windowSize = IntSize(width = 500, height = 1_000)
+    private val popupSize = IntSize(width = 280, height = 100)
+
+    @Test
+    fun ltr_clampsToVisibleWindowWithHorizontalMargin() {
+        val position =
+            provider.calculatePosition(
+                anchorBounds = IntRect(left = 400, top = 700, right = 500, bottom = 900),
+                windowSize = windowSize,
+                layoutDirection = LayoutDirection.Ltr,
+                popupContentSize = popupSize,
+            )
+
+        assertEquals(IntOffset(x = 204, y = 584), position)
+    }
+
+    @Test
+    fun rtl_clampsToVisibleWindowWithHorizontalMargin() {
+        val position =
+            provider.calculatePosition(
+                anchorBounds = IntRect(left = 0, top = 700, right = 100, bottom = 900),
+                windowSize = windowSize,
+                layoutDirection = LayoutDirection.Rtl,
+                popupContentSize = popupSize,
+            )
+
+        assertEquals(IntOffset(x = 16, y = 584), position)
+    }
+}