Avoid hardcoding the number of static-resources we expect to find

Author: Steve Kemp

static_test.go

@@ -6,6 +6,8 @@ package main
 
 import (
 	"io/ioutil"
+	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 )
@@ -14,7 +16,34 @@ import (
 // Test that we have one embedded resource.
 //
 func TestResourceCount(t *testing.T) {
-	expected := 14
+
+	expected := 0
+
+	// We're going to compare what is embedded with
+	// what is on-disk.
+	//
+	// We could just hard-wire the count, but that
+	// would require updating the count every time
+	// we add/remove a new resource
+	err := filepath.Walk("data",
+		func(path string, info os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+			if !info.IsDir() {
+				expected++
+			}
+			return nil
+		})
+	if err != nil {
+		t.Errorf("failed to find resources beneath data/ %s", err.Error())
+	}
+
+	// ARBITRARY!
+	if expected < 10 {
+		t.Fatalf("we expected more than 10 files beneath data/")
+	}
+
 	out := getResources()
 
 	if len(out) != expected {