Quick implementation of iterative group builder

src/spectator/example_group_iteration.cr

@@ -0,0 +1,10 @@
+require "./example_group"
+
+module Spectator
+  class ExampleGroupIteration(T) < ExampleGroup
+    def initialize(@item : T, name : Label = nil, location : Location? = nil,
+                   group : ExampleGroup? = nil, metadata : Metadata = Metadata.new)
+      super(name, location, group, metadata)
+    end
+  end
+end

src/spectator/iterative_example_group.cr

@@ -1,44 +0,0 @@
-require "./example_group"
-require "./node"
-
-module Spectator
-  # Collection of examples and sub-groups executed multiple times.
-  # Each sub-node is executed once for each item in a given collection.
-  class IterativeExampleGroup(T) < ExampleGroup
-    # Creates the iterative example group.
-    # The *collection* is a list of items to iterative over each sub-node over.
-    # The *location* tracks where the group exists in source code.
-    # This group will be assigned to the parent *group* if it is provided.
-    # A set of *metadata* can be used for filtering and modifying example behavior.
-    def initialize(collection : Enumerable(T), location : Location? = nil,
-                   group : ExampleGroup? = nil, metadata : Metadata = Metadata.new)
-      super()
-
-      @nodes = collection.map do |item|
-        Iteration.new(item, location, group, metadata).as(Node)
-      end
-    end
-
-    # Creates a child that is attched to the group.
-    # Yields zero or more times to create the child.
-    # The group the child should be attached to is provided as a block argument.
-    def create_child
-      @nodes.each { |child| yield child.as(Iteration(T)) }
-    end
-
-    # Adds the specified *node* to the group.
-    # Assigns the node to this group.
-    # If the node already belongs to a group,
-    # it will be removed from the previous group before adding it to this group.
-    def <<(node : Node)
-      @nodes.each { |child| child.as(Iteration(T)) << node.dup }
-    end
-
-    private class Iteration(T) < ExampleGroup
-      def initialize(@item : T, location : Location? = nil,
-                     group : ExampleGroup? = nil, metadata : Metadata = Metadata.new)
-        super(@item.inspect, location, group, metadata)
-      end
-    end
-  end
-end

src/spectator/iterative_example_group_builder.cr

@@ -0,0 +1,26 @@
+require "./example_group_builder"
+require "./example_group_iteration"
+
+module Spectator
+  class IterativeExampleGroupBuilder(T) < ExampleGroupBuilder
+    def initialize(@collection : Enumerable(T),
+      location : Location? = nil, metadata : Metadata = Metadata.new)
+      super(nil, location, metadata)
+    end
+
+    def build(parent = nil)
+      ExampleGroup.new(@name, @location, parent, @metadata).tap do |group|
+        @before_all_hooks.each { |hook| group.add_before_all_hook(hook) }
+        @before_each_hooks.each { |hook| group.add_before_each_hook(hook) }
+        @after_all_hooks.each { |hook| group.add_after_all_hook(hook) }
+        @after_each_hooks.each { |hook| group.add_after_each_hook(hook) }
+        @around_each_hooks.each { |hook| group.add_around_each_hook(hook) }
+        @collection.each do |item|
+          ExampleGroupIteration.new(item, item.inspect, @location, group).tap do |iteration|
+            @children.each(&.build(iteration))
+          end
+        end
+      end
+    end
+  end
+end

src/spectator/spec_builder.cr

@@ -4,7 +4,7 @@ require "./example_builder"
 require "./example_context_method"
 require "./example_group"
 require "./example_group_builder"
-require "./iterative_example_group"
+require "./iterative_example_group_builder"
 require "./pending_example_builder"
 require "./spec"
 require "./metadata"
@@ -78,7 +78,7 @@ module Spectator
     # For instance, adding a "pending" tag will mark tests as pending and skip execution.
     def start_iterative_group(collection, location = nil, metadata = Metadata.new) : Nil
       Log.trace { "Start iterative group: #{typeof(collection)} @ #{location}; metadata: #{metadata}" }
-      builder = ExampleGroupBuilder.new(collection, location, metadata) # TODO: IterativeExampleGroupBuilder
+      builder = IterativeExampleGroupBuilder.new(collection, location, metadata)
       current << builder
       @stack.push(builder)
     end