[Tests] Update Robolectric to 4.7.3

PiperOrigin-RevId: 439903104

Author: Material Design Team

build.gradle

@@ -46,7 +46,7 @@ ext {
   espressoVersion = '3.1.0'
   mockitoCoreVersion = '2.25.0'
   truthVersion = '0.45'
-  robolectricVersion = '4.3'
+  robolectricVersion = '4.7.3'
 
   // Enforce the use of prebuilt dependencies in all sub-projects. This is
   // required for the doclava dependency.

lib/javatests/com/google/android/material/datepicker/DateStringsTest.java

@@ -15,7 +15,7 @@
  */
 package com.google.android.material.datepicker;
 
-import static org.hamcrest.Matchers.is;
+import static org.hamcrest.core.Is.is;
 import static org.junit.Assert.assertThat;
 
 import android.os.Build.VERSION_CODES;

lib/javatests/com/google/android/material/datepicker/RangeDateSelectorTest.java

@@ -23,12 +23,14 @@
 import androidx.appcompat.app.AppCompatActivity;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.GridView;
 import android.widget.TextView.BufferType;
 import androidx.core.util.Pair;
 import androidx.test.core.app.ApplicationProvider;
 import com.google.android.material.internal.ParcelableTestUtils;
 import com.google.android.material.textfield.TextInputLayout;
+import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import org.junit.Assert;
 import org.junit.Before;
@@ -81,12 +83,13 @@ public void textInputValid() {
   @Test
   public void textInputFormatError() {
     View root = getRootView();
+    ((ViewGroup) activity.findViewById(android.R.id.content)).addView(root);
+
     TextInputLayout startTextInput = root.findViewById(R.id.mtrl_picker_text_input_range_start);
     TextInputLayout endTextInput = root.findViewById(R.id.mtrl_picker_text_input_range_end);
     startTextInput.getEditText().setText("22/22/2010", BufferType.EDITABLE);
     endTextInput.getEditText().setText("555-555-5555", BufferType.EDITABLE);
 
-    activity.setContentView(root);
     ShadowLooper.runUiThreadTasksIncludingDelayedTasks();
 
     assertThat(startTextInput.getError()).isNotNull();
@@ -210,8 +213,12 @@ public void textInputHintValidWithPTLocale() {
     activity.setContentView(root);
     ShadowLooper.runUiThreadTasksIncludingDelayedTasks();
 
-    assertThat(startTextInput.getPlaceholderText().toString()).isEqualTo("dd-mm-aaaa");
-    assertThat(endTextInput.getPlaceholderText().toString()).isEqualTo("dd-mm-aaaa");
+    // Some JVMs format PT dates as dd-mm-aaaa, and some as dd/mm/aaaa. Derive the expected result
+    // programatically to account for the difference.
+    boolean slashDateFormat = new SimpleDateFormat().toLocalizedPattern().startsWith("dd/");
+    String expectedDateFormat = slashDateFormat ? "dd/mm/aaaa" : "dd-mm-aaaa";
+    assertThat(startTextInput.getPlaceholderText().toString()).isEqualTo(expectedDateFormat);
+    assertThat(endTextInput.getPlaceholderText().toString()).isEqualTo(expectedDateFormat);
   }
 
   private View getRootView() {

lib/javatests/com/google/android/material/datepicker/SingleDateSelectorTest.java

@@ -17,8 +17,8 @@
 
 import com.google.android.material.R;
 
-import static org.hamcrest.Matchers.is;
-import static org.hamcrest.Matchers.nullValue;
+import static org.hamcrest.core.Is.is;
+import static org.hamcrest.core.IsNull.nullValue;
 import static org.junit.Assert.assertThat;
 
 import android.content.Context;