io-to-data.4 : introduce parameter, convert main

Duncan McGregor · dmcg · commit 593f72c81618 · 2021-06-23T22:23:51.000+01:00
diff --git a/src/main/java/travelator/marketing/HighValueCustomersMain.java b/src/main/java/travelator/marketing/HighValueCustomersMain.java
diff --git a/src/main/java/travelator/marketing/HighValueCustomersMain.kt b/src/main/java/travelator/marketing/HighValueCustomersMain.kt
@@ -6,7 +6,7 @@ import java.io.OutputStreamWriter
 fun main() {
     InputStreamReader(System.`in`).use { reader ->
         OutputStreamWriter(System.out).use { writer ->
-            generate(reader, writer)
+            generate(writer, reader.readLines())
         }
     }
 }
diff --git a/src/main/java/travelator/marketing/HighValueCustomersReport.kt b/src/main/java/travelator/marketing/HighValueCustomersReport.kt
@@ -1,13 +1,11 @@
 package travelator.marketing
 
 import java.io.IOException
-import java.io.Reader
 import java.io.Writer
 
 @Throws(IOException::class)
-fun generate(reader: Reader, writer: Writer) {
-    val valuableCustomers = reader
-        .readLines()
+fun generate(writer: Writer, lines: List<String>) {
+    val valuableCustomers = lines
         .toValuableCustomers()
         .sortedBy(CustomerData::score)
     writer.appendLine("ID\tName\tSpend")
diff --git a/src/test/java/travelator/marketing/HighValueCustomersReportTests.kt b/src/test/java/travelator/marketing/HighValueCustomersReportTests.kt
@@ -54,7 +54,7 @@ class HighValueCustomersReportTests {
     ) {
         val output = StringWriter()
         val reader = StringReader(inputLines.joinToString("\n"))
-        generate(reader, output)
+        generate(output, reader.readLines())
         val outputLines = output.toString().lines()
 
         assertEquals(expectedLines, outputLines)

Original file line number	Diff line number	Diff line change
`@@ -6,7 +6,7 @@ import java.io.OutputStreamWriter`
`6`	`6`	`fun main() {`
`7`	`7`	InputStreamReader(System.`in`).use { reader ->
`8`	`8`	`OutputStreamWriter(System.out).use { writer ->`
`9`		`- generate(reader, writer)`
	`9`	`+ generate(writer, reader.readLines())`
`10`	`10`	`}`
`11`	`11`	`}`
`12`	`12`	`}`