TUN-3440: 'tunnel rule' command to test ingress rules

cmd/cloudflared/tunnel/ingress_test.go

@@ -3,6 +3,7 @@ package tunnel
 import (
 	"net/url"
 	"reflect"
+	"regexp"
 	"testing"
 
 	"github.com/stretchr/testify/require"
@@ -143,3 +144,120 @@ ingress:
 		})
 	}
 }
+
+func MustParse(t *testing.T, rawURL string) *url.URL {
+	u, err := url.Parse(rawURL)
+	require.NoError(t, err)
+	return u
+}
+
+func Test_rule_matches(t *testing.T) {
+	type fields struct {
+		Hostname string
+		Path     *regexp.Regexp
+		Service  *url.URL
+	}
+	type args struct {
+		requestURL *url.URL
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   bool
+	}{
+		{
+			name: "Just hostname, pass",
+			fields: fields{
+				Hostname: "example.com",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://example.com"),
+			},
+			want: true,
+		},
+		{
+			name: "Entire hostname is wildcard, should match everything",
+			fields: fields{
+				Hostname: "*",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://example.com"),
+			},
+			want: true,
+		},
+		{
+			name: "Just hostname, fail",
+			fields: fields{
+				Hostname: "example.com",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://foo.bar"),
+			},
+			want: false,
+		},
+		{
+			name: "Just wildcard hostname, pass",
+			fields: fields{
+				Hostname: "*.example.com",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://adam.example.com"),
+			},
+			want: true,
+		},
+		{
+			name: "Just wildcard hostname, fail",
+			fields: fields{
+				Hostname: "*.example.com",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://tunnel.com"),
+			},
+			want: false,
+		},
+		{
+			name: "Just wildcard outside of subdomain in hostname, fail",
+			fields: fields{
+				Hostname: "*example.com",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://www.example.com"),
+			},
+			want: false,
+		},
+		{
+			name: "Wildcard over multiple subdomains",
+			fields: fields{
+				Hostname: "*.example.com",
+			},
+			args: args{
+				requestURL: MustParse(t, "https://adam.chalmers.example.com"),
+			},
+			want: true,
+		},
+		{
+			name: "Hostname and path",
+			fields: fields{
+				Hostname: "*.example.com",
+				Path:     regexp.MustCompile("/static/.*\\.html"),
+			},
+			args: args{
+				requestURL: MustParse(t, "https://www.example.com/static/index.html"),
+			},
+			want: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := rule{
+				Hostname: tt.fields.Hostname,
+				Path:     tt.fields.Path,
+				Service:  tt.fields.Service,
+			}
+			if got := r.matches(tt.args.requestURL); got != tt.want {
+				t.Errorf("rule.matches() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}