update book code

eBook/examples/chapter_9/uppercase/uc/uc.go

@@ -0,0 +1,8 @@
+// uc.go
+package uc
+
+import "strings"
+
+func UpperCase(str string) string {
+	return strings.ToUpper(str)
+}

eBook/examples/chapter_9/uppercase/uc/uc_test.go

@@ -0,0 +1,23 @@
+// uc_test.go
+package uc
+
+import "testing"
+
+type ucTest struct {
+	in, out string
+}
+
+var ucTests = []ucTest {
+	ucTest{"abc", "ABC"},
+	ucTest{"cvo-az", "CVO-AZ"},
+	ucTest{"Antwerp", "ANTWERP"},
+}
+
+func TestUC(t *testing.T) {
+	for _, ut := range ucTests {
+		uc := UpperCase(ut.in)
+		if uc != ut.out {
+			t.Errorf("UpperCase(%s) = %s, must be %s.", ut.in, uc, ut.out)
+		}
+	}
+}