From 715f2d8296b7236537d6686708e0628d42fd096a Mon Sep 17 00:00:00 2001
From: Drew Bednar <drew@runcible.io>
Date: Sat, 2 Mar 2024 14:29:28 -0500
Subject: [PATCH] Iteration done

---
 learn_go_with_tests/iteration/go.mod         |  3 ++
 learn_go_with_tests/iteration/repeat.go      | 12 ++++++
 learn_go_with_tests/iteration/repeat_test.go | 41 ++++++++++++++++++++
 3 files changed, 56 insertions(+)
 create mode 100644 learn_go_with_tests/iteration/go.mod
 create mode 100644 learn_go_with_tests/iteration/repeat.go
 create mode 100644 learn_go_with_tests/iteration/repeat_test.go

diff --git a/learn_go_with_tests/iteration/go.mod b/learn_go_with_tests/iteration/go.mod
new file mode 100644
index 0000000..c1320df
--- /dev/null
+++ b/learn_go_with_tests/iteration/go.mod
@@ -0,0 +1,3 @@
+module iteration
+
+go 1.21.0
diff --git a/learn_go_with_tests/iteration/repeat.go b/learn_go_with_tests/iteration/repeat.go
new file mode 100644
index 0000000..365334a
--- /dev/null
+++ b/learn_go_with_tests/iteration/repeat.go
@@ -0,0 +1,12 @@
+package iteration
+
+func Repeat(charaters string, count int) string {
+	var repeated string
+
+	for i := 0; i < count; i++ {
+		repeated += charaters
+	}
+
+	return repeated
+
+}
diff --git a/learn_go_with_tests/iteration/repeat_test.go b/learn_go_with_tests/iteration/repeat_test.go
new file mode 100644
index 0000000..e8efbd6
--- /dev/null
+++ b/learn_go_with_tests/iteration/repeat_test.go
@@ -0,0 +1,41 @@
+package iteration
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestRepeat(t *testing.T) {
+
+	t.Run("repeat simple letters", func(t *testing.T) {
+		repeated := Repeat("a", 6)
+		expected := "aaaaaa"
+
+		if repeated != expected {
+			t.Errorf("expected %q but got %q", expected, repeated)
+		}
+	})
+
+	t.Run("repeat words letters", func(t *testing.T) {
+		repeated := Repeat("dog", 5)
+		expected := "dogdogdogdogdog"
+
+		if repeated != expected {
+			t.Errorf("expected %q but got %q", expected, repeated)
+		}
+	})
+}
+
+// This test demonstrates benchmark testing https://pkg.go.dev/testing#hdr-Benchmarks
+
+func BenchmarkRepeat(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		Repeat("a", 4)
+	}
+}
+
+func ExampleRepeat() {
+	repeated := Repeat("da", 5)
+	fmt.Println(repeated)
+	// Output: dadadadada
+}