Bump to 1.92.0

A tiny release, but there's new features so it's technically a minor
bump.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -12,4 +12,5 @@ labels: bug
 ## Useful information to include:
  - Minecraft version
  - CC: Tweaked version
+ - Logs: These will be located in the `logs/` directory of your Minecraft instance. Please upload them as a gist or directly into this editor.
  - Detailed reproduction steps: sometimes I can spot a bug pretty easily, but often it's much more obscure. The more information I have to help reproduce it, the quicker it'll get fixed.

README.md

@@ -1,4 +1,4 @@
-# ![CC: Tweaked](logo.png)
+# ![CC: Tweaked](doc/logo.png)
 [![Current build status](https://github.com/SquidDev-CC/CC-Tweaked/workflows/Build/badge.svg)](https://github.com/SquidDev-CC/CC-Tweaked/actions "Current build status") [![Download CC: Tweaked on CurseForge](http://cf.way2muchnoise.eu/title/cc-tweaked.svg)](https://minecraft.curseforge.com/projects/cc-tweaked "Download CC: Tweaked on CurseForge")
 
 CC: Tweaked is a fork of [ComputerCraft](https://github.com/dan200/ComputerCraft), adding programmable computers,
@@ -50,12 +50,12 @@ I'd generally recommend you don't contact me directly (email, DM, etc...) unless
 report exploits). You'll get a far quicker response if you ask the whole community!
 
 ## Using
-If you want to depend on CC: Tweaked, we have a maven repo. However, you should be wary that some functionality is only
+CC: Tweaked is hosted on my maven repo, and so is relatively simple to depend on. You may wish to add a soft (or hard)
-exposed by CC:T's API and not vanilla ComputerCraft. If you wish to support all variations of ComputerCraft, I recommend
+dependency in your `mods.toml` file, with the appropriate version bounds, to ensure that API functionality you depend
-using [cc.crzd.me's maven](https://cc.crzd.me/maven/) instead.
+on is present.
 
 ```groovy
-dependencies {
+repositories {
   maven { url 'https://squiddev.cc/maven/' }
 }
 

gradle.properties

@@ -1,5 +1,5 @@
 # Mod properties
-mod_version=1.90.2
+mod_version=1.92.0
 
 # Minecraft properties (update mods.toml when changing)
 mc_version=1.15.2

illuaminate.sexp

@@ -101,6 +101,9 @@
   (linters -doc:unresolved-reference))
 
 (at /src/test/resources/test-rom
+  ; We should still be able to test deprecated members.
+  (linters -var:deprecated)
+
   (lint
     (globals
       :max sleep write

src/main/java/dan200/computercraft/ComputerCraft.java

@@ -39,6 +39,7 @@ public final class ComputerCraft
     public static final String[] DEFAULT_HTTP_ALLOW = new String[] { "*" };
     public static final String[] DEFAULT_HTTP_DENY = new String[] {
         "127.0.0.0/8",
+        "0.0.0.0/8",
         "10.0.0.0/8",
         "172.16.0.0/12",
         "192.168.0.0/16",

src/main/java/dan200/computercraft/core/apis/FSAPI.java

@@ -479,6 +479,7 @@ public class FSAPI implements ILuaAPI
             BasicFileAttributes attributes = fileSystem.getAttributes( path );
             Map<String, Object> result = new HashMap<>();
             result.put( "modification", getFileTime( attributes.lastModifiedTime() ) );
+            result.put( "modified", getFileTime( attributes.lastModifiedTime() ) );
             result.put( "created", getFileTime( attributes.creationTime() ) );
             result.put( "size", attributes.isDirectory() ? 0 : attributes.size() );
             result.put( "isDir", attributes.isDirectory() );

src/main/java/dan200/computercraft/core/computer/ComputerThread.java

@@ -395,14 +395,7 @@ public final class ComputerThread
                             executor.timeout.hardAbort();
                             executor.abort();
 
-                            if( afterHardAbort >= ABORT_TIMEOUT )
+                            if( afterHardAbort >= ABORT_TIMEOUT * 2 )
-                            {
-                                // If we've hard aborted but we're still not dead, dump the stack trace and interrupt
-                                // the task.
-                                timeoutTask( executor, runner.owner, afterStart );
-                                runner.owner.interrupt();
-                            }
-                            else if( afterHardAbort >= ABORT_TIMEOUT * 2 )
                             {
                                 // If we've hard aborted and interrupted, and we're still not dead, then mark the runner
                                 // as dead, finish off the task, and spawn a new runner.
@@ -421,6 +414,13 @@ public final class ComputerThread
                                     }
                                 }
                             }
+                            else if( afterHardAbort >= ABORT_TIMEOUT )
+                            {
+                                // If we've hard aborted but we're still not dead, dump the stack trace and interrupt
+                                // the task.
+                                timeoutTask( executor, runner.owner, afterStart );
+                                runner.owner.interrupt();
+                            }
                         }
                     }
                 }

src/main/java/dan200/computercraft/core/filesystem/FileSystemWrapperMount.java

@@ -124,7 +124,7 @@ public class FileSystemWrapperMount implements IFileSystem
     {
         try
         {
-            return m_filesystem.exists( path );
+            return m_filesystem.isDir( path );
         }
         catch( FileSystemException e )
         {

src/main/java/dan200/computercraft/core/lua/VarargArguments.java

@@ -83,9 +83,9 @@ class VarargArguments implements IArguments
     public ByteBuffer getBytes( int index ) throws LuaException
     {
         LuaValue value = varargs.arg( index + 1 );
-        if( !(value instanceof LuaString) ) throw LuaValues.badArgument( index, "string", value.typeName() );
+        if( !(value instanceof LuaBaseString) ) throw LuaValues.badArgument( index, "string", value.typeName() );
 
-        LuaString str = (LuaString) value;
+        LuaString str = ((LuaBaseString) value).strvalue();
         return ByteBuffer.wrap( str.bytes, str.offset, str.length ).asReadOnlyBuffer();
     }
 
@@ -94,9 +94,9 @@ class VarargArguments implements IArguments
     {
         LuaValue value = varargs.arg( index + 1 );
         if( value.isNil() ) return Optional.empty();
-        if( !(value instanceof LuaString) ) throw LuaValues.badArgument( index, "string", value.typeName() );
+        if( !(value instanceof LuaBaseString) ) throw LuaValues.badArgument( index, "string", value.typeName() );
 
-        LuaString str = (LuaString) value;
+        LuaString str = ((LuaBaseString) value).strvalue();
         return Optional.of( ByteBuffer.wrap( str.bytes, str.offset, str.length ).asReadOnlyBuffer() );
     }
 }

src/main/java/dan200/computercraft/shared/network/client/PlayRecordClientMessage.java

@@ -13,10 +13,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.fml.network.NetworkEvent;
-import net.minecraftforge.registries.ForgeRegistries;
 
 import javax.annotation.Nonnull;
-import java.util.Objects;
 
 /**
  * Starts or stops a record on the client, depending on if {@link #soundEvent} is {@code null}.
@@ -51,7 +49,7 @@ public class PlayRecordClientMessage implements NetworkMessage
         if( buf.readBoolean() )
         {
             name = buf.readString( Short.MAX_VALUE );
-            soundEvent = ForgeRegistries.SOUND_EVENTS.getValue( buf.readResourceLocation() );
+            soundEvent = buf.readRegistryIdSafe( SoundEvent.class );
         }
         else
         {
@@ -72,7 +70,7 @@ public class PlayRecordClientMessage implements NetworkMessage
         {
             buf.writeBoolean( true );
             buf.writeString( name );
-            buf.writeResourceLocation( Objects.requireNonNull( soundEvent.getRegistryName(), "Sound is not registered" ) );
+            buf.writeRegistryId( soundEvent );
         }
     }
 

src/main/java/dan200/computercraft/shared/peripheral/generic/data/ItemData.java

@@ -7,6 +7,8 @@
 package dan200.computercraft.shared.peripheral.generic.data;
 
 import com.google.gson.JsonParseException;
+import dan200.computercraft.ComputerCraft;
+import dan200.computercraft.shared.util.NBTUtil;
 import net.minecraft.enchantment.Enchantment;
 import net.minecraft.enchantment.EnchantmentHelper;
 import net.minecraft.item.EnchantedBookItem;
@@ -22,13 +24,29 @@ import javax.annotation.Nullable;
 import java.util.*;
 import java.util.stream.Collectors;
 
+/**
+ * Data providers for items.
+ *
+ * We guard using {@link ComputerCraft#genericPeripheral} in several places, as advanced functionality should not be
+ * exposed for {@code turtle.getItemDetail} when generic peripehrals are disabled.
+ */
 public class ItemData
 {
     @Nonnull
-    public static <T extends Map<? super String, Object>> T fillBasic( @Nonnull T data, @Nonnull ItemStack stack )
+    public static <T extends Map<? super String, Object>> T fillBasicSafe( @Nonnull T data, @Nonnull ItemStack stack )
     {
         data.put( "name", DataHelpers.getId( stack.getItem() ) );
         data.put( "count", stack.getCount() );
+
+        return data;
+    }
+
+    @Nonnull
+    public static <T extends Map<? super String, Object>> T fillBasic( @Nonnull T data, @Nonnull ItemStack stack )
+    {
+        fillBasicSafe( data, stack );
+        String hash = NBTUtil.getNBTHash( stack.getTag() );
+        if( hash != null ) data.put( "nbt", hash );
         return data;
     }
 
@@ -55,6 +73,8 @@ public class ItemData
 
         data.put( "tags", DataHelpers.getTags( stack.getItem().getTags() ) );
 
+        if( !ComputerCraft.genericPeripheral ) return data;
+
         CompoundNBT tag = stack.getTag();
         if( tag != null && tag.contains( "display", Constants.NBT.TAG_COMPOUND ) )
         {

src/main/java/dan200/computercraft/shared/turtle/apis/TurtleAPI.java

@@ -605,7 +605,7 @@ public class TurtleAPI implements ILuaAPI
 
         Map<String, Object> table = detailed
             ? ItemData.fill( new HashMap<>(), stack )
-            : ItemData.fillBasic( new HashMap<>(), stack );
+            : ItemData.fillBasicSafe( new HashMap<>(), stack );
 
         TurtleActionEvent event = new TurtleInspectItemEvent( turtle, stack, table, detailed );
         if( MinecraftForge.EVENT_BUS.post( event ) ) return new Object[] { false, event.getFailureMessage() };

src/main/java/dan200/computercraft/shared/util/DropConsumer.java

@@ -42,8 +42,6 @@ public final class DropConsumer
         dropEntity = entity;
         dropWorld = entity.world;
         dropBounds = new AxisAlignedBB( entity.getPosition() ).grow( 2, 2, 2 );
-
-        entity.captureDrops( new ArrayList<>() );
     }
 
     public static void set( World world, BlockPos pos, Function<ItemStack, ItemStack> consumer )
@@ -86,7 +84,7 @@ public final class DropConsumer
         }
     }
 
-    @SubscribeEvent
+    @SubscribeEvent( priority = EventPriority.LOW )
     public static void onLivingDrops( LivingDropsEvent drops )
     {
         if( dropEntity == null || drops.getEntity() != dropEntity ) return;

src/main/java/dan200/computercraft/shared/util/NBTUtil.java

@@ -5,9 +5,19 @@
  */
 package dan200.computercraft.shared.util;
 
+import dan200.computercraft.ComputerCraft;
 import net.minecraft.nbt.*;
 import net.minecraftforge.common.util.Constants;
+import org.apache.commons.codec.binary.Hex;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.io.DataOutput;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -159,4 +169,46 @@ public final class NBTUtil
         }
         return objects;
     }
+
+    @Nullable
+    public static String getNBTHash( @Nullable CompoundNBT tag )
+    {
+        if( tag == null ) return null;
+
+        try
+        {
+            MessageDigest digest = MessageDigest.getInstance( "MD5" );
+            DataOutput output = new DataOutputStream( new DigestOutputStream( digest ) );
+            CompressedStreamTools.write( tag, output );
+            byte[] hash = digest.digest();
+            return new String( Hex.encodeHex( hash ) );
+        }
+        catch( NoSuchAlgorithmException | IOException e )
+        {
+            ComputerCraft.log.error( "Cannot hash NBT", e );
+            return null;
+        }
+    }
+
+    private static final class DigestOutputStream extends OutputStream
+    {
+        private final MessageDigest digest;
+
+        DigestOutputStream( MessageDigest digest )
+        {
+            this.digest = digest;
+        }
+
+        @Override
+        public void write( @Nonnull byte[] b, int off, int len )
+        {
+            digest.update( b, off, len );
+        }
+
+        @Override
+        public void write( int b )
+        {
+            digest.update( (byte) b );
+        }
+    }
 }

src/main/resources/META-INF/mods.toml

@@ -19,6 +19,6 @@ CC: Tweaked is a fork of ComputerCraft, adding programmable computers, turtles a
 [[dependencies.computercraft]]
     modId="forge"
     mandatory=true
-    versionRange="[31.0.13,32)"
+    versionRange="[31.1.41,32)"
     ordering="NONE"
     side="BOTH"

src/main/resources/assets/computercraft/lang/vi.json

@@ -0,0 +1,48 @@
+{
+    "gui.computercraft.tooltip.disk_id": "ID của đĩa: %s",
+    "upgrade.computercraft.speaker.adjective": "Ồn ào",
+    "upgrade.computercraft.wireless_modem_advanced.adjective": "Ender",
+    "upgrade.computercraft.wireless_modem_normal.adjective": "Không dây",
+    "upgrade.minecraft.crafting_table.adjective": "Chế tạo",
+    "upgrade.minecraft.diamond_hoe.adjective": "Trồng trọt",
+    "upgrade.minecraft.diamond_axe.adjective": "Đốn",
+    "upgrade.minecraft.diamond_pickaxe.adjective": "Khai thác",
+    "upgrade.minecraft.diamond_shovel.adjective": "Đào",
+    "item.computercraft.pocket_computer_advanced.upgraded": "Máy tính bỏ túi tiên tiến %s",
+    "item.computercraft.pocket_computer_advanced": "Máy tính bỏ túi tiên tiến",
+    "item.computercraft.pocket_computer_normal.upgraded": "Máy tính bỏ túi %s",
+    "item.computercraft.pocket_computer_normal": "Máy tính bỏ túi",
+    "item.computercraft.printed_book": "Sách in",
+    "item.computercraft.printed_page": "Trang in",
+    "item.computercraft.treasure_disk": "Đĩa mềm",
+    "item.computercraft.disk": "Đĩa mềm",
+    "block.computercraft.turtle_advanced.upgraded_twice": "Rùa tiên tiến %s %s",
+    "block.computercraft.turtle_advanced.upgraded": "Rùa tiên tiến %s",
+    "block.computercraft.turtle_advanced": "Rùa tiên tiến",
+    "block.computercraft.turtle_normal.upgraded_twice": "Rùa %s %s",
+    "block.computercraft.turtle_normal.upgraded": "Rùa %s",
+    "block.computercraft.turtle_normal": "Rùa",
+    "block.computercraft.wired_modem_full": "Modem có dây",
+    "block.computercraft.cable": "Dây cáp mạng",
+    "block.computercraft.wired_modem": "Modem có dây",
+    "block.computercraft.wireless_modem_advanced": "Modem Ender",
+    "block.computercraft.wireless_modem_normal": "Modem không dây",
+    "block.computercraft.monitor_advanced": "Màn hình tiên tiếng",
+    "block.computercraft.monitor_normal": "Màn hình",
+    "block.computercraft.speaker": "Loa",
+    "block.computercraft.printer": "Máy in",
+    "block.computercraft.disk_drive": "Ỗ đĩa",
+    "block.computercraft.computer_command": "Máy tính điều khiển",
+    "block.computercraft.computer_normal": "Máy tính",
+    "itemGroup.computercraft": "ComputerCraft",
+    "block.computercraft.computer_advanced": "Máy tính tiên tiến",
+    "tracking_field.computercraft.websocket_incoming.name": "Websocket đến",
+    "tracking_field.computercraft.websocket_outgoing.name": "Websocket đi",
+    "gui.computercraft.tooltip.computer_id": "ID của máy tính: %s",
+    "tracking_field.computercraft.coroutines_dead.name": "Coroutine bỏ đi",
+    "tracking_field.computercraft.coroutines_created.name": "Coroutine đã tạo",
+    "tracking_field.computercraft.http_download.name": "HTTP tải xuống",
+    "tracking_field.computercraft.http_upload.name": "HTTP tải lên",
+    "tracking_field.computercraft.http.name": "Yêu cầu HTTP",
+    "gui.computercraft.tooltip.copy": "Sao chép vào clipboard"
+}

src/main/resources/data/computercraft/lua/rom/apis/colors.lua

@@ -181,9 +181,6 @@ end
 --- Either calls @{colors.packRGB} or @{colors.unpackRGB}, depending on how many
 -- arguments it receives.
 --
--- **Note:** This function is deprecated, and it is recommended you use the
--- specific pack/unpack function directly.
---
 -- @tparam[1] number r The red channel, as an argument to @{colors.packRGB}.
 -- @tparam[1] number g The green channel, as an argument to @{colors.packRGB}.
 -- @tparam[1] number b The blue channel, as an argument to @{colors.packRGB}.
@@ -192,6 +189,7 @@ end
 -- @treturn[2] number The red channel, as returned by @{colors.unpackRGB}
 -- @treturn[2] number The green channel, as returned by @{colors.unpackRGB}
 -- @treturn[2] number The blue channel, as returned by @{colors.unpackRGB}
+-- @deprecated Use @{packRGB} or @{unpackRGB} directly.
 -- @usage
 -- ```lua
 -- colors.rgb(0xb23399)

src/main/resources/data/computercraft/lua/rom/apis/textutils.lua

@@ -77,7 +77,7 @@ function formatTime(nTime, bTwentyFourHour)
     local nHour = math.floor(nTime)
     local nMinute = math.floor((nTime - nHour) * 60)
     if sTOD then
-        return string.format("%d:%02d %s", nHour, nMinute, sTOD)
+        return string.format("%d:%02d %s", nHour == 0 and 12 or nHour, nMinute, sTOD)
     else
         return string.format("%d:%02d", nHour, nMinute)
     end
@@ -335,6 +335,31 @@ empty_json_array = mk_tbl("[]", "empty_json_array")
 -- @see textutils.unserialiseJSON
 json_null = mk_tbl("null", "json_null")
 
+local serializeJSONString
+do
+    local function hexify(c)
+        return ("\\u00%02X"):format(c:byte())
+    end
+
+    local map = {
+        ["\""] = "\\\"",
+        ["\\"] = "\\\\",
+        ["\b"] = "\\b",
+        ["\f"] = "\\f",
+        ["\n"] = "\\n",
+        ["\r"] = "\\r",
+        ["\t"] = "\\t",
+    }
+    for i = 0, 0x1f do
+        local c = string.char(i)
+        if map[c] == nil then map[c] = hexify(c) end
+    end
+
+    serializeJSONString = function(s)
+        return ('"%s"'):format(s:gsub("[\0-\x1f\"\\]", map):gsub("[\x7f-\xff]", hexify))
+    end
+end
+
 local function serializeJSONImpl(t, tTracking, bNBTStyle)
     local sType = type(t)
     if t == empty_json_array then return "[]"
@@ -361,7 +386,7 @@ local function serializeJSONImpl(t, tTracking, bNBTStyle)
                     if bNBTStyle then
                         sEntry = tostring(k) .. ":" .. serializeJSONImpl(v, tTracking, bNBTStyle)
                     else
-                        sEntry = string.format("%q", k) .. ":" .. serializeJSONImpl(v, tTracking, bNBTStyle)
+                        sEntry = serializeJSONString(k) .. ":" .. serializeJSONImpl(v, tTracking, bNBTStyle)
                     end
                     if nObjectSize == 0 then
                         sObjectResult = sObjectResult .. sEntry
@@ -390,7 +415,7 @@ local function serializeJSONImpl(t, tTracking, bNBTStyle)
         end
 
     elseif sType == "string" then
-        return string.format("%q", t)
+        return serializeJSONString(t)
 
     elseif sType == "number" or sType == "boolean" then
         return tostring(t)
@@ -407,7 +432,7 @@ do
 
     --- Skip any whitespace
     local function skip(str, pos)
-        local _, last = find(str, "^[ \n\r\v]+", pos)
+        local _, last = find(str, "^[ \n\r\t]+", pos)
         if last then return last + 1 else return pos end
     end
 
@@ -447,7 +472,7 @@ do
                     buf[n], n, pos = utf8.char(tonumber(num_str, 16)), n + 1, pos + 6
                 else
                     local unesc = escapes[c]
-                    if not unesc then error_at(pos + 1, "Unknown escape character %q.", unesc) end
+                    if not unesc then error_at(pos + 1, "Unknown escape character %q.", c) end
                     buf[n], n, pos = unesc, n + 1, pos + 2
                 end
             elseif c >= '\x20' then

src/main/resources/data/computercraft/lua/rom/help/changelog.txt

@@ -1,3 +1,26 @@
+# New features in CC: Tweaked 1.92.0
+
+* Bump Cobalt version:
+  * Add support for the __pairs metamethod.
+  * string.format now uses the __tostring metamethod.
+* Add date-specific MOTDs (MCJack123).
+
+And several bug fixes:
+* Correctly handle tabs within textutils.unserailizeJSON.
+* Fix sheep not dropping items when sheered by turtles.
+
+# New features in CC: Tweaked 1.91.0
+
+* [Generic peripherals] Expose NBT hashes of items to inventory methods.
+* Bump Cobalt version
+  * Optimise handling of string concatenation.
+  * Add string.{pack,unpack,packsize} (MCJack123)
+
+And several bug fixes:
+* Escape non-ASCII characters in JSON strings (neumond)
+* Make field names in fs.attributes more consistent (abby)
+* Fix textutils.formatTime correctly handle 12 AM (R93950X)
+
 # New features in CC: Tweaked 1.90.2
 
 * Fix generic peripherals not being registered outside a dev environment.

src/main/resources/data/computercraft/lua/rom/help/whatsnew.txt

@@ -1,5 +1,12 @@
-New features in CC: Tweaked 1.90.2
+New features in CC: Tweaked 1.92.0
 
-* Fix generic peripherals not being registered outside a dev environment.
+* Bump Cobalt version:
+  * Add support for the __pairs metamethod.
+  * string.format now uses the __tostring metamethod.
+* Add date-specific MOTDs (MCJack123).
+
+And several bug fixes:
+* Correctly handle tabs within textutils.unserailizeJSON.
+* Fix sheep not dropping items when sheered by turtles.
 
 Type "help changelog" to see the full version history.

src/main/resources/data/computercraft/lua/rom/programs/motd.lua

@@ -1,15 +1,24 @@
-local tMotd = {}
+local date = os.date("*t")
+if date.month == 1 and date.day == 1 then
+    print("Happy new year!")
+elseif date.month == 12 and date.day == 24 then
+    print("Merry X-mas!")
+elseif date.month == 10 and date.day == 31 then
+    print("OOoooOOOoooo! Spooky!")
+else
+    local tMotd = {}
 
-for sPath in string.gmatch(settings.get("motd.path"), "[^:]+") do
+    for sPath in string.gmatch(settings.get("motd.path"), "[^:]+") do
-    if fs.exists(sPath) then
+        if fs.exists(sPath) then
-        for sLine in io.lines(sPath) do
+            for sLine in io.lines(sPath) do
-            table.insert(tMotd, sLine)
+                table.insert(tMotd, sLine)
+            end
         end
     end
-end
 
-if #tMotd == 0 then
+    if #tMotd == 0 then
-    print("missingno")
+        print("missingno")
-else
+    else
-    print(tMotd[math.random(1, #tMotd)])
+        print(tMotd[math.random(1, #tMotd)])
+    end
 end

src/test/resources/test-rom/data/json-parsing/y_tab_whitespace.json

@@ -0,0 +1 @@
+[	]

src/test/resources/test-rom/spec/apis/fs_spec.lua

@@ -208,9 +208,11 @@ describe("The fs library", function()
                 fail(("Expected created time (%d) to be within 1000ms of now (%d"):format(attributes.created, now))
             end
 
-            if attributes.modification - now >= 1000 then
+            if attributes.modified - now >= 1000 then
-                fail(("Expected modification time (%d) to be within 1000ms of now (%d"):format(attributes.modification, now))
+                fail(("Expected modified time (%d) to be within 1000ms of now (%d"):format(attributes.modified, now))
             end
+
+            expect(attributes.modification):eq(attributes.modified)
         end)
     end)
 end)

src/test/resources/test-rom/spec/apis/textutils_spec.lua

@@ -12,6 +12,14 @@ describe("The textutils library", function()
             expect.error(textutils.formatTime, nil):eq("bad argument #1 (expected number, got nil)")
             expect.error(textutils.formatTime, 1, 1):eq("bad argument #2 (expected boolean, got number)")
         end)
+
+        it("correctly formats 12 o'clock", function()
+            expect(textutils.formatTime(0, false)):eq("12:00 AM")
+            expect(textutils.formatTime(0.1, false)):eq("12:06 AM")
+
+            expect(textutils.formatTime(0, true)):eq("0:00")
+            expect(textutils.formatTime(0.1, true)):eq("0:06")
+        end)
     end)
 
     describe("textutils.pagedPrint", function()
@@ -49,7 +57,7 @@ describe("The textutils library", function()
     describe("textutils.empty_json_array", function()
         it("is immutable", function()
             expect.error(function() textutils.empty_json_array[1] = true end)
-                :str_match("^[^:]+:51: attempt to mutate textutils.empty_json_array$")
+                :str_match("^[^:]+:%d+: attempt to mutate textutils.empty_json_array$")
         end)
     end)
 
@@ -78,6 +86,20 @@ describe("The textutils library", function()
         it("serializes null", function()
             expect(textutils.serializeJSON(textutils.json_null)):eq("null")
         end)
+
+        it("serializes strings", function()
+            expect(textutils.serializeJSON('a')):eq('"a"')
+            expect(textutils.serializeJSON('"')):eq('"\\""')
+            expect(textutils.serializeJSON('\\')):eq('"\\\\"')
+            expect(textutils.serializeJSON('/')):eq('"/"')
+            expect(textutils.serializeJSON('\b')):eq('"\\b"')
+            expect(textutils.serializeJSON('\n')):eq('"\\n"')
+            expect(textutils.serializeJSON(string.char(0))):eq('"\\u0000"')
+            expect(textutils.serializeJSON(string.char(0x0A))):eq('"\\n"')
+            expect(textutils.serializeJSON(string.char(0x1D))):eq('"\\u001D"')
+            expect(textutils.serializeJSON(string.char(0x81))):eq('"\\u0081"')
+            expect(textutils.serializeJSON(string.char(0xFF))):eq('"\\u00FF"')
+        end)
     end)
 
     describe("textutils.unserializeJSON", function()

src/test/resources/test-rom/spec/programs/motd_spec.lua

@@ -1,14 +1,36 @@
 local capture = require "test_helpers".capture_program
 
 describe("The motd program", function()
+    local function setup_date(month, day)
+        stub(os, "date", function() return { month = month, day = day } end)
+    end
 
-    it("displays MODT", function()
+    it("displays MOTD", function()
-        local file = fs.open("/modt_check.txt", "w")
+        setup_date(0, 0)
+        local file = fs.open("/motd_check.txt", "w")
         file.write("Hello World!")
         file.close()
-        settings.set("motd.path", "/modt_check.txt")
+        settings.set("motd.path", "/motd_check.txt")
 
         expect(capture(stub, "motd"))
             :matches { ok = true, output = "Hello World!\n", error = "" }
     end)
+
+    it("displays date-specific MOTD (1/1)", function()
+        setup_date(1, 1)
+        expect(capture(stub, "motd"))
+            :matches { ok = true, output = "Happy new year!\n", error = "" }
+    end)
+
+    it("displays date-specific MOTD (10/31)", function()
+        setup_date(10, 31)
+        expect(capture(stub, "motd"))
+            :matches { ok = true, output = "OOoooOOOoooo! Spooky!\n", error = "" }
+    end)
+
+    it("displays date-specific MOTD (12/24)", function()
+        setup_date(12, 24)
+        expect(capture(stub, "motd"))
+            :matches { ok = true, output = "Merry X-mas!\n", error = "" }
+    end)
 end)