Filled in "ReadInts" implementation and test

algs4/src/meatballhat.com/algs4/io.go

@@ -4,23 +4,36 @@ import (
 	"bufio"
 	"io"
 	"strconv"
+	"strings"
 )
 
-func ReadInts(infile io.Reader) ([]int64, error) {
+func ReadInts(inbuf io.Reader) ([]int64, error) {
 	ints := make([]int64, 0)
 
 	var i int64
 
-	fileReader := bufio.NewReader(infile)
+	fileReader := bufio.NewReader(inbuf)
 	line, err := fileReader.ReadString('\n')
+
 	for err == nil {
-		i, err = strconv.ParseInt(line, 10, 0)
-		if err != nil {
-			return nil, err
+		line = strings.TrimSpace(line)
+
+		if len(line) > 0 {
+			i, err = strconv.ParseInt(line, 10, 0)
+
+			if err != nil {
+				return nil, err
+			}
+
+			ints = append(ints, i)
 		}
-		ints = append(ints, i)
+
 		line, err = fileReader.ReadString('\n')
 	}
 
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+
 	return ints, nil
 }

algs4/src/meatballhat.com/algs4/io_test.go

@@ -1,11 +1,50 @@
 package algs4_test
 
 import (
+	"fmt"
+	"strings"
 	"testing"
 )
 
+import (
+	"meatballhat.com/algs4"
+)
+
+const INTS_STRING = `
+999
+848
+-7271
+7384
+71878
+92
+0
+0
+0
+-99
+`
+
 func TestReadInts(t *testing.T) {
-	if 1 == 0 {
-		t.Error("WAT")
+	ints, err := algs4.ReadInts(strings.NewReader(INTS_STRING))
+
+	if err != nil {
+		t.Error("Wrong wrong wrong: ", err)
+	}
+
+	if ints == nil {
+		t.Error("Nothing in the ints!: ", ints)
+	}
+
+	fmt.Println("ints =", ints)
+
+	if ints[0] != 999 {
+		t.Error("fail on 0: 999 !=", ints[0])
+	}
+
+	if ints[4] != 71878 {
+		t.Error("fail on 4: 71878 !=", ints[4])
+	}
+
+	if ints[6] != 0 {
+		t.Error("fail on 6: 0 !=", ints[6])
 	}
 }