[wpilib] Allow SendableCameraWrappers to take arbitrary URLs (#3850)

Useful for adding cameras that are streamed from a coprocessor

Co-authored-by: Peter Johnson <johnson.peter@gmail.com>
Co-authored-by: Sam Carlberg <sam.carlberg@gmail.com>

wpilibj/src/test/java/edu/wpi/first/wpilibj/shuffleboard/SendableCameraWrapperTest.java

@@ -0,0 +1,63 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.wpilibj.shuffleboard;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import edu.wpi.first.networktables.NetworkTableInstance;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+class SendableCameraWrapperTest {
+  @BeforeEach
+  void setup() {
+    NetworkTableInstance.getDefault().deleteAllEntries();
+    SendableCameraWrapper.clearWrappers();
+  }
+
+  @AfterAll
+  static void tearDown() {
+    NetworkTableInstance.getDefault().deleteAllEntries();
+  }
+
+  @Test
+  void testNullCameraName() {
+    assertThrows(NullPointerException.class, () -> SendableCameraWrapper.wrap(null, ""));
+  }
+
+  @Test
+  void testEmptyCameraName() {
+    assertThrows(IllegalArgumentException.class, () -> SendableCameraWrapper.wrap("", ""));
+  }
+
+  @Test
+  void testNullUrlArray() {
+    assertThrows(
+        NullPointerException.class, () -> SendableCameraWrapper.wrap("name", (String[]) null));
+  }
+
+  @Test
+  void testNullUrlInArray() {
+    assertThrows(NullPointerException.class, () -> SendableCameraWrapper.wrap("name", "url", null));
+  }
+
+  @Test
+  void testEmptyUrlArray() {
+    assertThrows(IllegalArgumentException.class, () -> SendableCameraWrapper.wrap("name"));
+  }
+
+  @Test
+  void testUrlsAddedToNt() {
+    SendableCameraWrapper.wrap("name", "url1", "url2");
+    assertArrayEquals(
+        new String[] {"url1", "url2"},
+        NetworkTableInstance.getDefault()
+            .getEntry("/CameraPublisher/name/streams")
+            .getValue()
+            .getStringArray());
+  }
+}