feat(banner): 배너 wrap content 높이를 지원한다

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

app/src/main/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerView.kt

@@ -74,6 +74,21 @@ class BannerView @JvmOverloads constructor(
         super.onDetachedFromWindow()
     }
 
+
+    override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
+        val widthSize = MeasureSpec.getSize(widthMeasureSpec)
+        val heightMode = MeasureSpec.getMode(heightMeasureSpec)
+        val measuredHeightSpec = if (widthSize > 0 && heightMode != MeasureSpec.EXACTLY) {
+            val density = resources.displayMetrics.density
+            val screenWidthDp = (widthSize / density).roundToInt()
+            val desiredHeight = BannerLayoutCalculator.calculate(screenWidthDp, density).itemHeightDp.dpToPx()
+            MeasureSpec.makeMeasureSpec(desiredHeight, MeasureSpec.EXACTLY)
+        } else {
+            heightMeasureSpec
+        }
+        super.onMeasure(widthMeasureSpec, measuredHeightSpec)
+    }
+
     override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
         super.onSizeChanged(w, h, oldw, oldh)
         if (w > 0) applyLayoutSize(w)

app/src/test/java/kr/co/vividnext/sodalive/v2/widget/banner/BannerViewTest.kt

@@ -120,6 +120,36 @@ class BannerViewTest {
         assertEquals(362.dpToPx(), holder.itemView.layoutParams.height)
     }
 
+    @Test
+    fun `배너 view는 wrap content 높이면 402dp 폭 기준 362dp 높이로 측정된다`() {
+        val view = inflateBannerView()
+
+        view.setItems(listOf(sampleItem("1"), sampleItem("2")))
+        view.measure(exactly(402.dpToPx()), atMost(1_000.dpToPx()))
+
+        assertEquals(362.dpToPx(), view.measuredHeight)
+    }
+
+    @Test
+    fun `배너 view는 wrap content 높이면 360dp 폭 기준 320dp 높이로 측정된다`() {
+        val view = inflateBannerView()
+
+        view.setItems(listOf(sampleItem("1"), sampleItem("2")))
+        view.measure(exactly(360.dpToPx()), atMost(1_000.dpToPx()))
+
+        assertEquals(320.dpToPx(), view.measuredHeight)
+    }
+
+    @Test
+    fun `배너 view는 명시 높이면 부모 측정 높이를 유지한다`() {
+        val view = inflateBannerView()
+
+        view.setItems(listOf(sampleItem("1"), sampleItem("2")))
+        view.measure(exactly(402.dpToPx()), exactly(500.dpToPx()))
+
+        assertEquals(500.dpToPx(), view.measuredHeight)
+    }
+
     @Test
     fun `배너 view는 단일 item이면 item 간격을 적용하지 않는다`() {
         val view = inflateBannerView()
@@ -303,6 +333,8 @@ class BannerViewTest {
 
     private fun exactly(size: Int): Int = MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY)
 
+    private fun atMost(size: Int): Int = MeasureSpec.makeMeasureSpec(size, MeasureSpec.AT_MOST)
+
     private fun Int.dpToPx(): Int {
         val context = ApplicationProvider.getApplicationContext<Context>()
         return (this * context.resources.displayMetrics.density).toInt()