Adding TextIOService with default implementation

* .. which was originally implemented in the TypedIOServiceTest for
testing the TypedIOService architecture

src/main/java/org/scijava/text/io/DefaultTextIOService.java

@@ -0,0 +1,43 @@
+/*
+ * #%L
+ * SciJava Common shared library for SciJava software.
+ * %%
+ * Copyright (C) 2009 - 2020 SciJava developers.
+ * %%
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * #L%
+ */
+
+package org.scijava.text.io;
+
+import org.scijava.io.AbstractTypedIOService;
+import org.scijava.plugin.Plugin;
+import org.scijava.service.Service;
+
+/**
+ * Default {@link TextIOService} implementation for opening and saving text data
+ *
+ * @author Deborah Schmidt
+ */
+@Plugin(type = Service.class)
+public class DefaultTextIOService extends AbstractTypedIOService<String> implements TextIOService {
+}

src/main/java/org/scijava/text/io/TextIOService.java

@@ -0,0 +1,40 @@
+/*
+ * #%L
+ * SciJava Common shared library for SciJava software.
+ * %%
+ * Copyright (C) 2009 - 2020 SciJava developers.
+ * %%
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * #L%
+ */
+
+package org.scijava.text.io;
+
+import org.scijava.io.TypedIOService;
+
+/**
+ * {@link TypedIOService} for opening and saving text data
+ *
+ * @author Deborah Schmidt
+ */
+public interface TextIOService extends TypedIOService<String> {
+}

src/test/java/org/scijava/ContextCreationTest.java

@@ -114,6 +114,7 @@ public void testFull() {
 				org.scijava.startup.DefaultStartupService.class,
 				org.scijava.task.DefaultTaskService.class,
 				org.scijava.text.DefaultTextService.class,
+				org.scijava.text.io.DefaultTextIOService.class,
 				org.scijava.thread.DefaultThreadService.class,
 				org.scijava.tool.DefaultToolService.class,
 				org.scijava.ui.DefaultUIService.class,

src/test/java/org/scijava/io/TypedIOServiceTest.java

@@ -3,12 +3,9 @@
 import org.junit.Test;
 import org.scijava.Context;
 import org.scijava.plugin.PluginInfo;
-import org.scijava.plugin.PluginService;
-import org.scijava.plugin.SciJavaPlugin;
-import org.scijava.service.SciJavaService;
 import org.scijava.text.AbstractTextFormat;
 import org.scijava.text.TextFormat;
-import org.scijava.text.TextService;
+import org.scijava.text.io.TextIOService;
 
 import java.io.IOException;
 import java.util.Collections;
@@ -24,9 +21,6 @@ public void testTextFile() throws IOException {
 		// create context, add dummy text format
 		final Context ctx = new Context();
 		ctx.getPluginIndex().add(new PluginInfo<>(DummyTextFormat.class, TextFormat.class));
-		ctx.getPluginIndex().add(new PluginInfo<>(DefaultTextIOService.class, TextIOService.class));
-		TextIOService instance = (TextIOService) ctx.getService(PluginService.class).createInstance(ctx.getPluginIndex().get(TextIOService.class).get(0));
-		ctx.getServiceIndex().add(instance);
 
 		// try to get the TextIOService
 		final TextIOService io = ctx.service(TextIOService.class);
@@ -39,12 +33,6 @@ public void testTextFile() throws IOException {
 		assertTrue(obj.contains("content"));
 	}
 
-	interface TextIOService extends TypedIOService<String> {
-	}
-
-	public static class DefaultTextIOService extends AbstractTypedIOService<String> implements TextIOService {
-	}
-
 	public static class DummyTextFormat  extends AbstractTextFormat {
 
 		@Override