cuelang.org/go@v0.10.1/internal/core/dep/dep_test.go (about)

     1  // Copyright 2020 CUE Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package dep_test
    16  
    17  import (
    18  	"fmt"
    19  	"io"
    20  	"strings"
    21  	"testing"
    22  	"text/tabwriter"
    23  
    24  	"cuelang.org/go/cue"
    25  	"cuelang.org/go/cue/cuecontext"
    26  	"cuelang.org/go/cue/format"
    27  	"cuelang.org/go/internal/core/adt"
    28  	"cuelang.org/go/internal/core/debug"
    29  	"cuelang.org/go/internal/core/dep"
    30  	"cuelang.org/go/internal/core/eval"
    31  	"cuelang.org/go/internal/cuetdtest"
    32  	"cuelang.org/go/internal/cuetxtar"
    33  	"cuelang.org/go/internal/value"
    34  )
    35  
    36  func TestVisit(t *testing.T) {
    37  	test := cuetxtar.TxTarTest{
    38  		Root:   "./testdata",
    39  		Name:   "dependencies",
    40  		Matrix: cuetdtest.SmallMatrix,
    41  
    42  		ToDo: map[string]string{
    43  			"dependencies-v3/inline": "error",
    44  		},
    45  	}
    46  
    47  	test.Run(t, func(t *cuetxtar.Test) {
    48  		val := t.Context().BuildInstance(t.Instance())
    49  		if val.Err() != nil {
    50  			t.Fatal(val.Err())
    51  		}
    52  
    53  		ctxt := eval.NewContext(value.ToInternal(val))
    54  
    55  		testCases := []struct {
    56  			name string
    57  			root string
    58  			cfg  *dep.Config
    59  		}{{
    60  			name: "field",
    61  			root: "a.b",
    62  			cfg:  nil,
    63  		}, {
    64  			name: "all",
    65  			root: "a",
    66  			cfg:  &dep.Config{Descend: true},
    67  		}, {
    68  			name: "dynamic",
    69  			root: "a",
    70  			cfg:  &dep.Config{Dynamic: true},
    71  		}}
    72  
    73  		for _, tc := range testCases {
    74  			v := val.LookupPath(cue.ParsePath(tc.root))
    75  
    76  			_, n := value.ToInternal(v)
    77  			w := t.Writer(tc.name)
    78  
    79  			t.Run(tc.name, func(sub *testing.T) {
    80  				testVisit(sub, w, ctxt, n, tc.cfg)
    81  			})
    82  		}
    83  	})
    84  }
    85  
    86  func testVisit(t *testing.T, w io.Writer, ctxt *adt.OpContext, v *adt.Vertex, cfg *dep.Config) {
    87  	t.Helper()
    88  
    89  	tw := tabwriter.NewWriter(w, 0, 4, 1, ' ', 0)
    90  	defer tw.Flush()
    91  
    92  	fmt.Fprintf(tw, "line \vreference\v   path of resulting vertex\n")
    93  
    94  	dep.Visit(cfg, ctxt, v, func(d dep.Dependency) error {
    95  		if d.Reference == nil {
    96  			t.Fatal("no reference")
    97  		}
    98  
    99  		src := d.Reference.Source()
   100  		line := src.Pos().Line()
   101  		b, _ := format.Node(src)
   102  		ref := string(b)
   103  		str := value.Make(ctxt, d.Node).Path().String()
   104  
   105  		if i := d.Import(); i != nil {
   106  			path := i.ImportPath.StringValue(ctxt)
   107  			str = fmt.Sprintf("%q.%s", path, str)
   108  		} else if !d.Node.Rooted() {
   109  			str = "**non-rooted**"
   110  		}
   111  
   112  		fmt.Fprintf(tw, "%d:\v%s\v=> %s\n", line, ref, str)
   113  
   114  		return nil
   115  	})
   116  }
   117  
   118  // DO NOT REMOVE: for Testing purposes.
   119  func TestX(t *testing.T) {
   120  	cfg := &dep.Config{
   121  		Dynamic: true,
   122  		// Recurse: true,
   123  	}
   124  
   125  	in := `
   126  	`
   127  
   128  	if strings.TrimSpace(in) == "" {
   129  		t.Skip()
   130  	}
   131  
   132  	v := cuecontext.New().CompileString(in)
   133  	if err := v.Err(); err != nil {
   134  		t.Fatal(err)
   135  	}
   136  
   137  	aVal := v.LookupPath(cue.MakePath(cue.Str("a")))
   138  
   139  	r, n := value.ToInternal(aVal)
   140  
   141  	ctxt := eval.NewContext(r, n)
   142  
   143  	n.VisitLeafConjuncts(func(c adt.Conjunct) bool {
   144  		str := debug.NodeString(ctxt, c.Elem(), nil)
   145  		t.Log(str)
   146  		return true
   147  	})
   148  
   149  	w := &strings.Builder{}
   150  	fmt.Fprintln(w)
   151  
   152  	testVisit(t, w, ctxt, n, cfg)
   153  
   154  	t.Error(w.String())
   155  }