Add spec for RootExampleGroupBuilder

spec/dsl/root_example_group_builder_spec.cr

@@ -0,0 +1,202 @@
+require "../spec_helper"
+
+describe Spectator::DSL::RootExampleGroupBuilder do
+  describe "#add_child" do
+    it "creates the correct number of children" do
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      3.times do
+        factory = Spectator::DSL::ExampleFactory.new(PassingExample)
+        group_builder = Spectator::DSL::NestedExampleGroupBuilder.new("foo")
+        builder.add_child(factory)
+        builder.add_child(group_builder)
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.children.size.should eq(6)
+    end
+
+    context "with an ExampleFactory" do
+      it "creates the example" do
+        builder = Spectator::DSL::RootExampleGroupBuilder.new
+        factory = Spectator::DSL::ExampleFactory.new(PassingExample)
+        builder.add_child(factory)
+        group = builder.build(Spectator::Internals::SampleValues.empty)
+        group.children.first.should be_a(PassingExample)
+      end
+    end
+
+    context "with an ExampleGroupBuilder" do
+      it "creates the group" do
+        builder = Spectator::DSL::RootExampleGroupBuilder.new
+        group_builder = Spectator::DSL::NestedExampleGroupBuilder.new("foo")
+        builder.add_child(group_builder)
+        group = builder.build(Spectator::Internals::SampleValues.empty)
+        group.children.first.should be_a(Spectator::NestedExampleGroup)
+      end
+    end
+  end
+
+  describe "#add_before_all_hook" do
+    it "adds a hook" do
+      hook_called = false
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      builder.add_before_all_hook(->{
+        hook_called = true
+      })
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_before_all_hooks
+      hook_called.should eq(true)
+    end
+
+    it "supports multiple hooks" do
+      call_count = 0
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      5.times do |i|
+        builder.add_before_all_hook(->{
+          call_count += i + 1
+        })
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_before_all_hooks
+      call_count.should eq(15)
+    end
+  end
+
+  describe "#add_before_each_hook" do
+    it "adds a hook" do
+      hook_called = false
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      builder.add_before_each_hook(->{
+        hook_called = true
+      })
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_before_each_hooks
+      hook_called.should eq(true)
+    end
+
+    it "supports multiple hooks" do
+      call_count = 0
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      5.times do |i|
+        builder.add_before_each_hook(->{
+          call_count += i + 1
+        })
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_before_each_hooks
+      call_count.should eq(15)
+    end
+  end
+
+  describe "#add_after_all_hook" do
+    it "adds a hook" do
+      hook_called = false
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      builder.add_after_all_hook(->{
+        hook_called = true
+      })
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_after_all_hooks
+      hook_called.should eq(true)
+    end
+
+    it "supports multiple hooks" do
+      call_count = 0
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      5.times do |i|
+        builder.add_after_all_hook(->{
+          call_count += i + 1
+        })
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_after_all_hooks
+      call_count.should eq(15)
+    end
+  end
+
+  describe "#add_after_each_hook" do
+    it "adds a hook" do
+      hook_called = false
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      builder.add_after_each_hook(->{
+        hook_called = true
+      })
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_after_each_hooks
+      hook_called.should eq(true)
+    end
+
+    it "supports multiple hooks" do
+      call_count = 0
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      5.times do |i|
+        builder.add_after_each_hook(->{
+          call_count += i + 1
+        })
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.run_after_each_hooks
+      call_count.should eq(15)
+    end
+  end
+
+  describe "#add_around_each_hook" do
+    it "adds a hook" do
+      hook_called = false
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      builder.add_around_each_hook(->(proc : ->) {
+        hook_called = true
+      })
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      proc = group.wrap_around_each_hooks { }
+      proc.call
+      hook_called.should eq(true)
+    end
+
+    it "supports multiple hooks" do
+      call_count = 0
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      5.times do |i|
+        builder.add_around_each_hook(->(proc : ->) {
+          call_count += i + 1
+          proc.call
+        })
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      proc = group.wrap_around_each_hooks { }
+      proc.call
+      call_count.should eq(15)
+    end
+  end
+
+  describe "#build" do
+    it "passes along the sample values" do
+      factory = Spectator::DSL::ExampleFactory.new(SpyExample)
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      builder.add_child(factory)
+      values = Spectator::Internals::SampleValues.empty.add(:foo, "foo", 12345)
+      group = builder.build(values)
+      group.children.first.as(SpyExample).sample_values.should eq(values)
+    end
+
+    it "specifies the parent of the children correctly" do
+      builder = Spectator::DSL::RootExampleGroupBuilder.new
+      3.times do
+        factory = Spectator::DSL::ExampleFactory.new(PassingExample)
+        group_builder = Spectator::DSL::NestedExampleGroupBuilder.new("foo")
+        builder.add_child(factory)
+        builder.add_child(group_builder)
+      end
+      group = builder.build(Spectator::Internals::SampleValues.empty)
+      group.children.all? do |child|
+        case(child)
+        when Spectator::Example
+          child.group == group
+        when Spectator::NestedExampleGroup
+          child.parent == group
+        else
+          false
+        end
+      end.should be_true
+    end
+  end
+end