github.com/gopherd/gonum@v0.0.4/graph/formats/dot/internal/astx/astx_test.go (about)

     1  // This file is dual licensed under CC0 and The Gonum License.
     2  //
     3  // Copyright ©2017 The Gonum Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  //
     7  // Copyright ©2017 Robin Eklind.
     8  // This file is made available under a Creative Commons CC0 1.0
     9  // Universal Public Domain Dedication.
    10  
    11  package astx_test
    12  
    13  import (
    14  	"bytes"
    15  	"os"
    16  	"testing"
    17  
    18  	"github.com/gopherd/gonum/graph/formats/dot"
    19  )
    20  
    21  func TestParseFile(t *testing.T) {
    22  	golden := []struct {
    23  		in  string
    24  		out string
    25  	}{
    26  		{in: "../testdata/empty.dot"},
    27  		{in: "../testdata/graph.dot"},
    28  		{in: "../testdata/digraph.dot"},
    29  		{in: "../testdata/strict.dot"},
    30  		{in: "../testdata/multi.dot"},
    31  		{in: "../testdata/named_graph.dot"},
    32  		{in: "../testdata/node_stmt.dot"},
    33  		{in: "../testdata/edge_stmt.dot"},
    34  		{in: "../testdata/attr_stmt.dot"},
    35  		{in: "../testdata/attr.dot"},
    36  		{
    37  			in:  "../testdata/subgraph.dot",
    38  			out: "../testdata/subgraph.golden",
    39  		},
    40  		{
    41  			in:  "../testdata/semi.dot",
    42  			out: "../testdata/semi.golden",
    43  		},
    44  		{
    45  			in:  "../testdata/empty_attr.dot",
    46  			out: "../testdata/empty_attr.golden",
    47  		},
    48  		{
    49  			in:  "../testdata/attr_lists.dot",
    50  			out: "../testdata/attr_lists.golden",
    51  		},
    52  		{
    53  			in:  "../testdata/attr_sep.dot",
    54  			out: "../testdata/attr_sep.golden",
    55  		},
    56  		{in: "../testdata/subgraph_vertex.dot"},
    57  		{in: "../testdata/port.dot"},
    58  		{in: "../testdata/quoted_id.dot"},
    59  		{
    60  			in:  "../testdata/backslash_newline_id.dot",
    61  			out: "../testdata/backslash_newline_id.golden",
    62  		},
    63  	}
    64  	for _, g := range golden {
    65  		file, err := dot.ParseFile(g.in)
    66  		if err != nil {
    67  			t.Errorf("%q: unable to parse file; %v", g.in, err)
    68  			continue
    69  		}
    70  		// If no output path is specified, the input is already golden.
    71  		out := g.in
    72  		if len(g.out) > 0 {
    73  			out = g.out
    74  		}
    75  		buf, err := os.ReadFile(out)
    76  		if err != nil {
    77  			t.Errorf("%q: unable to read file; %v", g.in, err)
    78  			continue
    79  		}
    80  		got := file.String()
    81  		// Remove trailing newline.
    82  		want := string(bytes.TrimSpace(buf))
    83  		if got != want {
    84  			t.Errorf("%q: graph mismatch; expected `%s`, got `%s`", g.in, want, got)
    85  		}
    86  	}
    87  }