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112 lines
2.7 KiB
Go
112 lines
2.7 KiB
Go
// This file is dual licensed under CC0 and The gonum license.
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//
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// Copyright ©2017 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//
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// Copyright ©2017 Robin Eklind.
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// This file is made available under a Creative Commons CC0 1.0
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// Universal Public Domain Dedication.
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package parser_test
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import (
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"bytes"
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"io/ioutil"
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"testing"
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"gonum.org/v1/gonum/graph/formats/dot"
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)
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func TestParseFile(t *testing.T) {
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golden := []struct {
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in string
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out string
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}{
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{in: "../testdata/empty.dot"},
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{in: "../testdata/graph.dot"},
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{in: "../testdata/digraph.dot"},
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{in: "../testdata/strict.dot"},
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{in: "../testdata/multi.dot"},
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{in: "../testdata/named_graph.dot"},
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{in: "../testdata/node_stmt.dot"},
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{in: "../testdata/edge_stmt.dot"},
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{in: "../testdata/attr_stmt.dot"},
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{in: "../testdata/attr.dot"},
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{
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in: "../testdata/subgraph.dot",
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out: "../testdata/subgraph.golden",
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},
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{
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in: "../testdata/semi.dot",
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out: "../testdata/semi.golden",
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},
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{
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in: "../testdata/empty_attr.dot",
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out: "../testdata/empty_attr.golden",
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},
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{
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in: "../testdata/attr_lists.dot",
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out: "../testdata/attr_lists.golden",
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},
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{
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in: "../testdata/attr_sep.dot",
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out: "../testdata/attr_sep.golden",
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},
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{in: "../testdata/subgraph_vertex.dot"},
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{in: "../testdata/port.dot"},
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{in: "../testdata/quoted_id.dot"},
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{
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in: "../testdata/backslash_newline_id.dot",
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out: "../testdata/backslash_newline_id.golden",
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},
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}
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for _, g := range golden {
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file, err := dot.ParseFile(g.in)
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if err != nil {
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t.Errorf("%q: unable to parse file; %v", g.in, err)
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continue
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}
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// If no output path is specified, the input is already golden.
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out := g.in
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if len(g.out) > 0 {
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out = g.out
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}
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buf, err := ioutil.ReadFile(out)
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if err != nil {
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t.Errorf("%q: unable to read file; %v", g.in, err)
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continue
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}
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got := file.String()
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// Remove trailing newline.
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want := string(bytes.TrimSpace(buf))
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if got != want {
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t.Errorf("%q: graph mismatch; expected `%s`, got `%s`", g.in, want, got)
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}
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}
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}
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func TestParseError(t *testing.T) {
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golden := []struct {
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path string
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want string
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}{
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{
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path: "../testdata/error.dot",
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want: `Error in S30: INVALID(0,~), Pos(offset=13, line=2, column=7), expected one of: { } graphx ; -- -> node edge [ = subgraph : id `,
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},
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}
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for _, g := range golden {
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_, err := dot.ParseFile(g.path)
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if err == nil {
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t.Errorf("%q: expected error, got nil", g.path)
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continue
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}
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got := err.Error()
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if got != g.want {
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t.Errorf("%q: error mismatch; expected `%v`, got `%v`", g.path, g.want, got)
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continue
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}
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}
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}
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