Add test for InterpolatorType

Summary: Adding a test for the newly added InterpolatorType.fromString()

Reviewed By: axe-fb

Differential Revision: D10203814

fbshipit-source-id: f3c70db1a5754c79b1bdd881d266bec110934494

Author: Emily Janzer

ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/BUCK

@@ -0,0 +1,17 @@
+load("//tools/build_defs/oss:rn_defs.bzl", "YOGA_TARGET", "react_native_dep", "react_native_target", "react_native_tests_target", "rn_robolectric_test")
+
+rn_robolectric_test(
+    name = "layoutanimation",
+    srcs = glob(["**/*.java"]),
+    contacts = ["oncall+react_native@xmail.facebook.com"],
+    visibility = [
+        "PUBLIC",
+    ],
+    deps = [
+        YOGA_TARGET,
+        react_native_dep("third-party/java/fest:fest"),
+        react_native_dep("third-party/java/junit:junit"),
+        react_native_dep("third-party/java/robolectric3/robolectric:robolectric"),
+        react_native_target("java/com/facebook/react/uimanager:uimanager"),
+    ],
+)

ReactAndroid/src/test/java/com/facebook/react/uimanager/layoutanimation/InterpolatorTypeTest.java

@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react.uimanager.layoutanimation;
+
+import com.facebook.react.uimanager.layoutanimation.InterpolatorType;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import static org.fest.assertions.api.Assertions.assertThat;
+
+@RunWith(RobolectricTestRunner.class)
+public class InterpolatorTypeTest {
+
+  @Test
+  public void testCamelCase() {
+    assertThat(InterpolatorType.fromString("linear")).isEqualTo(InterpolatorType.LINEAR);
+    assertThat(InterpolatorType.fromString("easeIn")).isEqualTo(InterpolatorType.EASE_IN);
+    assertThat(InterpolatorType.fromString("easeOut")).isEqualTo(InterpolatorType.EASE_OUT);
+    assertThat(InterpolatorType.fromString("easeInEaseOut")).isEqualTo(InterpolatorType.EASE_IN_EASE_OUT);
+    assertThat(InterpolatorType.fromString("spring")).isEqualTo(InterpolatorType.SPRING);
+  }
+
+  @Test
+  public void testOtherCases() {
+    assertThat(InterpolatorType.fromString("EASEIN")).isEqualTo(InterpolatorType.EASE_IN);
+    assertThat(InterpolatorType.fromString("easeout")).isEqualTo(InterpolatorType.EASE_OUT);
+    assertThat(InterpolatorType.fromString("easeineaseout")).isEqualTo(InterpolatorType.EASE_IN_EASE_OUT);
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void testInvalidInterpolatorTypes() throws IllegalArgumentException {
+    InterpolatorType.fromString("ease_in_ease_out");
+  }
+}