Use calamus instead of mcp for testing

Author: thecatcore

src/test/java/io/github/fabriccompatibiltylayers/modremappingapi/test/TestModRemapper.java

@@ -22,7 +22,7 @@ public class TestModRemapper implements ModRemapper {
 
     @Override
     public String[] getJarFolders() {
-        return new String[0];
+        return new String[]{"test-mods"};
     }
 
     @Override
@@ -47,14 +47,14 @@ public void registerPostVisitors(VisitorInfos infos) {
 
     @Override
     public Optional<String> getSourceNamespace() {
-        return Optional.of("searge");
+        return Optional.of("calamus");
     }
 
     @Override
     public Optional<Supplier<InputStream>> getExtraMapping() {
         return Optional.of(() -> {
             try {
-                return Files.newInputStream(MOD_CONTAINER.findPath("./mappings-COMBINED-mcp-1.6.4-9.11.1.1345-official-5205111.tiny").get());
+                return Files.newInputStream(MOD_CONTAINER.findPath("./calamus-1.6.4.tiny").get());
             } catch (IOException e) {
                 throw new RuntimeException(e);
             }
@@ -64,7 +64,7 @@ public Optional<Supplier<InputStream>> getExtraMapping() {
     @Override
     public void afterRemap() {
         assert Objects.equals(
-                MappingUtils.mapClass("net/minecraft/server/gui/TextAreaLogHandlerINNER1"),
+                MappingUtils.mapClass("net/minecraft/unmapped/C_0760609"),
                 FabricLoader.getInstance().isDevelopmentEnvironment() ?
                         "net/minecraft/client/class_785"
                         : "net/minecraft/class_785"

src/test/resources/ATTRIBUTIONS.MD

@@ -0,0 +1,2 @@
+The file `calamus-1.6.4.tiny` was taken from OrnitheMC's "[Calamus](https://maven.ornithemc.net/releases/net/ornithemc/calamus-intermediary/1.6.4/calamus-intermediary-1.6.4-v2.jar)" intermediaries under the CC0 license. 
+The `intermediary` namespace renamed to `calamus`.