cuelang.org/go@v0.13.0/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/format"
    26  	"cuelang.org/go/internal"
    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/core/runtime"
    32  	"cuelang.org/go/internal/cuedebug"
    33  	"cuelang.org/go/internal/cuetdtest"
    34  	"cuelang.org/go/internal/cuetxtar"
    35  	"cuelang.org/go/internal/value"
    36  )
    37  
    38  func TestVisit(t *testing.T) {
    39  	test := cuetxtar.TxTarTest{
    40  		Root: "./testdata",
    41  		Name: "dependencies",
    42  		// Matrix: cuetdtest.SmallMatrix,
    43  		Matrix: cuetdtest.DevOnlyMatrix,
    44  
    45  		ToDo: map[string]string{
    46  			"dependencies-v3/inline": "error",
    47  		},
    48  	}
    49  
    50  	test.Run(t, func(t *cuetxtar.Test) {
    51  		flags := cuedebug.Config{
    52  			Sharing: true,
    53  			// LogEval: 1,
    54  		}
    55  		ctx := t.CueContext()
    56  		r := (*runtime.Runtime)(ctx)
    57  		r.SetDebugOptions(&flags)
    58  
    59  		val := ctx.BuildInstance(t.Instance())
    60  		if val.Err() != nil {
    61  			t.Fatal(val.Err())
    62  		}
    63  
    64  		ctxt := eval.NewContext(value.ToInternal(val))
    65  
    66  		testCases := []struct {
    67  			name string
    68  			root string
    69  			cfg  *dep.Config
    70  		}{{
    71  			name: "field",
    72  			root: "a.b",
    73  			cfg:  nil,
    74  		}, {
    75  			name: "all",
    76  			root: "a",
    77  			cfg:  &dep.Config{Descend: true},
    78  		}, {
    79  			name: "dynamic",
    80  			root: "a",
    81  			cfg:  &dep.Config{Dynamic: true},
    82  		}}
    83  
    84  		for _, tc := range testCases {
    85  			v := val.LookupPath(cue.ParsePath(tc.root))
    86  
    87  			_, n := value.ToInternal(v)
    88  			w := t.Writer(tc.name)
    89  
    90  			t.Run(tc.name, func(sub *testing.T) {
    91  				testVisit(sub, w, ctxt, n, tc.cfg)
    92  			})
    93  		}
    94  	})
    95  }
    96  
    97  func testVisit(t *testing.T, w io.Writer, ctxt *adt.OpContext, v *adt.Vertex, cfg *dep.Config) {
    98  	t.Helper()
    99  
   100  	tw := tabwriter.NewWriter(w, 0, 4, 1, ' ', 0)
   101  	defer tw.Flush()
   102  
   103  	fmt.Fprintf(tw, "line \vreference\v   path of resulting vertex\n")
   104  
   105  	dep.Visit(cfg, ctxt, v, func(d dep.Dependency) error {
   106  		if d.Reference == nil {
   107  			t.Fatal("no reference")
   108  		}
   109  
   110  		src := d.Reference.Source()
   111  		line := src.Pos().Line()
   112  		b, _ := format.Node(src)
   113  		ref := string(b)
   114  		str := value.Make(ctxt, d.Node).Path().String()
   115  
   116  		if i := d.Import(); i != nil {
   117  			path := i.ImportPath.StringValue(ctxt)
   118  			str = fmt.Sprintf("%q.%s", path, str)
   119  		} else if d.Node.IsDetached() {
   120  			str = "**non-rooted**"
   121  		}
   122  
   123  		fmt.Fprintf(tw, "%d:\v%s\v=> %s\n", line, ref, str)
   124  
   125  		return nil
   126  	})
   127  }
   128  
   129  // DO NOT REMOVE: for Testing purposes.
   130  func TestX(t *testing.T) {
   131  	version := internal.DefaultVersion
   132  	// version = internal.DevVersion // Uncomment for eval V3
   133  	flags := cuedebug.Config{
   134  		Sharing: true,
   135  		LogEval: 1,
   136  	}
   137  
   138  	cfg := &dep.Config{
   139  		Dynamic: true,
   140  		// Descend: true,
   141  	}
   142  
   143  	in := `
   144  	`
   145  
   146  	if strings.TrimSpace(in) == "" {
   147  		t.Skip()
   148  	}
   149  
   150  	r := runtime.NewWithSettings(version, flags)
   151  	ctx := (*cue.Context)(r)
   152  
   153  	v := ctx.CompileString(in)
   154  	if err := v.Err(); err != nil {
   155  		t.Fatal(err)
   156  	}
   157  
   158  	aVal := v.LookupPath(cue.MakePath(cue.Str("a")))
   159  
   160  	r, n := value.ToInternal(aVal)
   161  
   162  	out := debug.NodeString(r, n, nil)
   163  	t.Error(out)
   164  
   165  	ctxt := eval.NewContext(r, n)
   166  
   167  	n.VisitLeafConjuncts(func(c adt.Conjunct) bool {
   168  		str := debug.NodeString(ctxt, c.Elem(), nil)
   169  		t.Log(str)
   170  		return true
   171  	})
   172  
   173  	w := &strings.Builder{}
   174  	fmt.Fprintln(w)
   175  
   176  	testVisit(t, w, ctxt, n, cfg)
   177  
   178  	t.Error(w.String())
   179  }