diff --git a/testing/bdd_iteration_5/accumulator.go b/testing/bdd_iteration_5/accumulator.go
new file mode 100644
index 0000000..d807c36
--- /dev/null
+++ b/testing/bdd_iteration_5/accumulator.go
@@ -0,0 +1,9 @@
+package accumulator
+
+type acc struct {
+	value int
+}
+
+func (a *acc) accumulate(x int) {
+	a.value += x
+}
diff --git a/testing/bdd_iteration_5/accumulator_test.go b/testing/bdd_iteration_5/accumulator_test.go
new file mode 100644
index 0000000..de6297a
--- /dev/null
+++ b/testing/bdd_iteration_5/accumulator_test.go
@@ -0,0 +1,35 @@
+package accumulator
+
+import (
+	"fmt"
+	"github.com/DATA-DOG/godog"
+)
+
+var testAccumulator *acc
+
+func iHaveAnAccumulatorWith(initialValue int) error {
+	testAccumulator.value = initialValue
+	return nil
+}
+
+func iAddToAccumulator(value int) error {
+	testAccumulator.accumulate(value)
+	return nil
+}
+
+func theAccumulatedResultShouldBe(expected int) error {
+	if testAccumulator.value == expected {
+		return nil
+	}
+	return fmt.Errorf("Incorrect accumulator value %d", testAccumulator.value)
+}
+
+func FeatureContext(s *godog.Suite) {
+	s.Step(`^I have an accumulator with (-?\d+)$`, iHaveAnAccumulatorWith)
+	s.Step(`^I add (-?\d+) to accumulator$`, iAddToAccumulator)
+	s.Step(`^the accumulated result should be (-?\d+)$`, theAccumulatedResultShouldBe)
+
+	s.BeforeScenario(func(interface{}) {
+		testAccumulator = &acc{}
+	})
+}
diff --git a/testing/bdd_iteration_5/features/accumulator.feature b/testing/bdd_iteration_5/features/accumulator.feature
new file mode 100644
index 0000000..e6ee205
--- /dev/null
+++ b/testing/bdd_iteration_5/features/accumulator.feature
@@ -0,0 +1,14 @@
+Feature: simple accumulator checks
+  An accumulator must be able to add a number to its content
+
+  Scenario Outline: Accumulate multiple values
+    Given I have an accumulator with 0
+    When I add <amount> to accumulator
+    Then the accumulated result should be <accumulated>
+
+  Examples:
+   |amount|accumulated|
+   | 0    | 0         |
+   | 1    | 1         |
+   | 1    | 2         |
+   | 10   | 12        |
diff --git a/testing/bdd_iteration_5/results.txt b/testing/bdd_iteration_5/results.txt
new file mode 100644
index 0000000..6848a65
--- /dev/null
+++ b/testing/bdd_iteration_5/results.txt
@@ -0,0 +1,31 @@
+Feature: simple accumulator checks
+  An accumulator must be able to add a number to its content
+
+  Scenario Outline: Accumulate multiple values          # features/accumulator.feature:4
+    Given I have an accumulator with 0                  # accumulator_test.go:11 -> iHaveAnAccumulatorWith
+    When I add <amount> to accumulator                  # accumulator_test.go:16 -> iAddToAccumulator
+    Then the accumulated result should be <accumulated> # accumulator_test.go:20 -> theAccumulatedResultShouldBe
+
+    Examples:
+      | amount | accumulated |
+      | 0      | 0           |
+      | 1      | 1           |
+      | 1      | 2           |
+        Incorrect accumulator value 1
+      | 10     | 12          |
+        Incorrect accumulator value 10
+
+--- Failed steps:
+
+  Scenario Outline: Accumulate multiple values # features/accumulator.feature:4
+    Then the accumulated result should be 2 # features/accumulator.feature:7
+      Error: Incorrect accumulator value 1
+
+  Scenario Outline: Accumulate multiple values # features/accumulator.feature:4
+    Then the accumulated result should be 12 # features/accumulator.feature:7
+      Error: Incorrect accumulator value 10
+
+
+4 scenarios (2 passed, 2 failed)
+12 steps (10 passed, 2 failed)
+356.714µs