phone-screen-unit-test.diff

diff --git a/app/src/main/java/com/etsy/android/interview/Message.kt b/app/src/main/java/com/etsy/android/interview/Message.kt
index 4760acd..762da20 100644
--- a/app/src/main/java/com/etsy/android/interview/Message.kt
+++ b/app/src/main/java/com/etsy/android/interview/Message.kt
@@ -1,6 +1,9 @@
 package com.etsy.android.interview
 
 import java.text.SimpleDateFormat
+import java.time.ZoneId
+import java.util.Locale
+import java.util.TimeZone
 
 data class Message(
     val content: String,
@@ -11,7 +14,12 @@ data class Message(
     /**
      * Use a time formatter (e.g. [SimpleDateFormat]) to create a human readable time string
      */
-    fun formatTime(): String {
-        return ""
+    fun formatTime(
+        locale: Locale = Locale.getDefault(),
+        timezone: TimeZone = TimeZone.getTimeZone(ZoneId.systemDefault())
+    ): String {
+        val format = SimpleDateFormat("MMM d, h:mm aaa", locale)
+        format.timeZone = timezone
+        return format.format(time)
     }
 }
\ No newline at end of file
diff --git a/app/src/test/java/com/etsy/android/interview/ui/MessageTest.kt b/app/src/test/java/com/etsy/android/interview/ui/MessageTest.kt
index b3b5c00..5268cba 100644
--- a/app/src/test/java/com/etsy/android/interview/ui/MessageTest.kt
+++ b/app/src/test/java/com/etsy/android/interview/ui/MessageTest.kt
@@ -3,6 +3,8 @@ package com.etsy.android.interview.ui
 import com.etsy.android.interview.Message
 import org.junit.Assert.assertEquals
 import org.junit.Test
+import java.util.Locale
+import java.util.TimeZone
 
 class MessageTest {
     @Test
@@ -14,10 +16,12 @@ class MessageTest {
         // Given
         val message = Message(
             content = "Hello",
-            time = 1630719120000,
+            time = 1704122100000,
             isFromUser = false
         )
-        val result = message.formatTime()
+        val testLocale = Locale.US
+        val testTimeZone = TimeZone.getTimeZone("GMT")
+        val result = message.formatTime(testLocale, testTimeZone)
         // Then
         assertEquals(expected, result)
     }