test: increase coverage of eskipfile package to >80% (#2289)

Signed-off-by: Sandor Szuecs <[email protected]>

eskipfile/file_test.go

@@ -0,0 +1,39 @@
+package eskipfile
+
+import (
+	"testing"
+
+	"github.com/zalando/skipper/eskip"
+)
+
+func TestOpenAndLoadAndParseAll(t *testing.T) {
+	f, err := Open("fixtures/test.eskip")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ris, err := f.LoadAndParseAll()
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, ri := range ris {
+		if ri.ParseError != nil {
+			t.Fatal(err)
+		}
+	}
+
+	check := func(routeInfos []*eskip.RouteInfo, id, path string) {
+		for _, ri := range routeInfos {
+			if ri.Id == id {
+				if ri.Path != path {
+					t.Fatalf("Failed to find %q != %q", ri.Path, path)
+				}
+				return
+			}
+		}
+		t.Fatalf("Failed to find expected route with id %q and path %q", id, path)
+	}
+
+	check(ris, "foo", "/foo")
+	check(ris, "bar", "/bar")
+}