From f3200419baba452475654ba2cf2419d092263646 Mon Sep 17 00:00:00 2001
From: Drew Bednar <drew@androiddrew.com>
Date: Sun, 23 Jun 2024 10:43:45 -0400
Subject: [PATCH] Add unit test structure for common

---
 go-web-app/gowiki/Makefile              |  5 +++-
 go-web-app/gowiki/common/common_test.go | 40 +++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletion(-)
 create mode 100644 go-web-app/gowiki/common/common_test.go

diff --git a/go-web-app/gowiki/Makefile b/go-web-app/gowiki/Makefile
index 2ff8074..8f8d4e9 100644
--- a/go-web-app/gowiki/Makefile
+++ b/go-web-app/gowiki/Makefile
@@ -2,4 +2,7 @@ build:
 	go build -o ./bin/gowiki ./cmd/gowiki/main.go
 
 clean:
-	rm -rf ./bin/gowiki
\ No newline at end of file
+	rm -rf ./bin/gowiki
+
+test:
+	go test ./...
\ No newline at end of file
diff --git a/go-web-app/gowiki/common/common_test.go b/go-web-app/gowiki/common/common_test.go
new file mode 100644
index 0000000..419ee65
--- /dev/null
+++ b/go-web-app/gowiki/common/common_test.go
@@ -0,0 +1,40 @@
+package common
+
+import (
+	"log"
+	"os"
+	"testing"
+)
+
+func assertString(t *testing.T, got, want string) {
+	t.Helper()
+	if got != want {
+		log.Fatalf("Assertion failed. Got: %s want: %s", got, want)
+	}
+}
+
+func TestGetDefaultEnv(t *testing.T) {
+
+	t.Run("test key exists", func(t *testing.T) {
+		//Setup
+		want := "test value"
+		os.Setenv("TEST_KEY", want)
+		got := GetDefaultEnv("TEST_KEY", "")
+		assertString(t, got, want)
+		os.Unsetenv("TEST_KEY")
+	})
+
+	t.Run("key does not exists", func(t *testing.T) {
+		//Setup
+		want := "another test value"
+		got := GetDefaultEnv("TEST_KEY", want)
+		assertString(t, got, want)
+	})
+
+	t.Run("key maps to empty value", func(t *testing.T) {
+		//Setup
+		want := ""
+		got := GetDefaultEnv("TEST_EMPTY_KEY", want)
+		assertString(t, got, want)
+	})
+}