Return success if no file coverage target has been set

Also add a child to test _ready() on autoload nodes with children

Autoload1.gd

@@ -15,6 +15,7 @@ func _init():
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	_ready = '1'
+	add_child(other_node)
 
 func fmt(value: String) -> String:
 	emit_signal('formatting')

OtherNode.gd

@@ -1,10 +1,13 @@
 extends Node
 
-# I don't think we can fix the case where the _init() has any required arguments
-# your code will have to allow these to be (re)initialized with no arguments
-func _init(parent: Node = null):
+var ready := false
+
+func _init(parent: Node):
 	if parent:
 		parent.add_child(self)
 
+func _ready():
+	ready = true
+
 func fmt(value: String):
 	return "OtherNode(%s)" % [value]

addons/coverage/Coverage.gd

@@ -364,9 +364,10 @@ func set_coverage_targets(total: float, file: float) -> void:
 
 func coverage_passing() -> bool:
 	var all_files_passing := true
-	for script in coverage_collectors:
-		var script_percent = coverage_collectors[script].coverage_percent()
-		all_files_passing = all_files_passing && script_percent > _coverage_target_file
+	if _coverage_target_file < INF:
+		for script in coverage_collectors:
+			var script_percent = coverage_collectors[script].coverage_percent()
+			all_files_passing = all_files_passing && script_percent > _coverage_target_file
 	return coverage_percent() > _coverage_target_total && all_files_passing
 
 # see ScriptCoverage.Verbosity for verbosity levels