Invoke before_each, before_all, after_each, and after_all hooks

src/spectator/context.cr

@@ -11,6 +11,9 @@ module Spectator
     getter after_each_hooks = [] of ->
     getter around_each_hooks = [] of Example ->
 
+    @before_all_hooks_run = false
+    @after_all_hooks_run = false
+
     def initialize(@parent = nil)
       if (parent = @parent)
         parent.contexts << self
@@ -21,6 +24,48 @@ module Spectator
       add_examples
     end
 
+    def run_before_all_hooks
+      if (parent = @parent)
+        parent.run_before_all_hooks
+      end
+      unless @before_all_hooks_run
+        @before_all_hooks.each do |hook|
+          hook.call
+        end
+        @before_all_hooks_run = true
+      end
+    end
+
+    def run_before_each_hooks
+      if (parent = @parent)
+        parent.run_before_each_hooks
+      end
+      @before_each_hooks.each do |hook|
+        hook.call
+      end
+    end
+
+    def run_after_all_hooks
+      unless @after_all_hooks_run
+        @after_all_hooks.each do |hook|
+          hook.call
+        end
+        @after_all_hooks_run = true
+      end
+      if (parent = @parent)
+        parent.run_after_all_hooks
+      end
+    end
+
+    def run_after_each_hooks
+      @after_each_hooks.each do |hook|
+        hook.call
+      end
+      if (parent = @parent)
+        parent.run_after_each_hooks
+      end
+    end
+
     protected def add_examples(array = [] of Example)
       array.concat(@examples)
       contexts.each do |context|

src/spectator/runner.cr

@@ -24,6 +24,8 @@ module Spectator
 
     private def run_example(example)
       error = nil
+      example.context.run_before_all_hooks
+      example.context.run_before_each_hooks
       elapsed = Time.measure do
         begin
           example.run
@@ -31,6 +33,8 @@ module Spectator
           error = ex
         end
       end
+      example.context.run_after_each_hooks
+      example.context.run_after_all_hooks
       case error
       when Nil
         SuccessfulExampleResult.new(example, elapsed)