- Kotlin Adoption - textlayoutbuilder/util

Summary:
Kotlin Adoption generated and fixed by editus and devmate - fbandroid/libraries/textlayoutbuilder/library/src/test/java/com/facebook/fbui/textlayoutbuilder/util

Converted all Java files to Kotlin:
- LayoutMeasureUtilTest.java → LayoutMeasureUtilTest.kt

Changes:
- Removed Hungarian notation (mLayout → layout)
- Converted to idiomatic Kotlin with proper null safety using safe call operator (?.) instead of explicit null checks
- Converted static nested classes to Kotlin companion object and object declaration
- Converted test methods to Kotlin function syntax
- Updated BUCK file (removed language = "JAVA" as Kotlin is now default)
- Files properly marked as moved to preserve history

Reviewed By: coreywu

Differential Revision: D85901861

fbshipit-source-id: b05404f7239fa3029830f06843a46fdb657ad2b3

Author: Anthony Liu

library/src/test/java/com/facebook/fbui/textlayoutbuilder/util/LayoutMeasureUtilTest.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * 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 com.facebook.fbui.textlayoutbuilder.util
+
+import android.text.Layout
+import android.text.StaticLayout
+import android.text.TextPaint
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.annotation.Config
+
+@Config(sdk = [23])
+@RunWith(RobolectricTestRunner::class)
+class LayoutMeasureUtilTest {
+
+  private lateinit var layout: Layout
+
+  @Test
+  fun testOneLineWithAdd() {
+    layout = StaticLayoutHelper.makeStaticLayout(ONE_LINE_TEXT, 1.0f, 5.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(15)
+  }
+
+  @Test
+  fun testTwoLinesWithAdd() {
+    layout = StaticLayoutHelper.makeStaticLayout(TWO_LINE_TEXT, 1.0f, 5.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(30)
+  }
+
+  @Test
+  fun testOneLineWithMulti() {
+    layout = StaticLayoutHelper.makeStaticLayout(ONE_LINE_TEXT, 1.5f, 0.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(15)
+  }
+
+  @Test
+  fun testTwoLinesWithMulti() {
+    layout = StaticLayoutHelper.makeStaticLayout(TWO_LINE_TEXT, 1.5f, 0.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(30)
+  }
+
+  @Test
+  fun testOneLineWithAddAndMulti() {
+    layout = StaticLayoutHelper.makeStaticLayout(ONE_LINE_TEXT, 1.5f, 2.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(17)
+  }
+
+  @Test
+  fun testTwoLinesWithAddAndMulti() {
+    layout = StaticLayoutHelper.makeStaticLayout(TWO_LINE_TEXT, 1.5f, 2.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(34)
+  }
+
+  @Test
+  fun testEmptyTextWithAddAndMulti() {
+    layout = StaticLayoutHelper.makeStaticLayout("", 1.5f, 2.0f)
+    assertThat(LayoutMeasureUtil.getHeight(layout)).isEqualTo(10)
+  }
+
+  private class DummyTextPaint : TextPaint() {
+    override fun getFontMetricsInt(fmi: FontMetricsInt?): Int {
+      fmi?.let { metrics ->
+        metrics.ascent = 0
+        metrics.top = 0
+        metrics.descent = 10
+        metrics.bottom = 10
+      }
+      return 0
+    }
+  }
+
+  private object StaticLayoutHelper {
+    fun makeStaticLayout(text: CharSequence, spacingMult: Float, spacingAdd: Float): Layout {
+      return StaticLayout(
+          text,
+          DummyTextPaint(),
+          1000,
+          Layout.Alignment.ALIGN_NORMAL,
+          spacingMult,
+          spacingAdd,
+          true,
+      )
+    }
+  }
+
+  companion object {
+    private const val ONE_LINE_TEXT = "test"
+    private const val TWO_LINE_TEXT = "test\ntest"
+  }
+}