github.com/GoogleContainerTools/kpt@v1.0.0-beta.50.0.20240520170205-c25345ffcbee/internal/builtins/pkg_context_test.go (about)

     1  // Copyright 2022 The kpt 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 builtins
    16  
    17  import (
    18  	"bytes"
    19  	"os"
    20  	"path/filepath"
    21  	"testing"
    22  
    23  	"github.com/google/go-cmp/cmp"
    24  	"github.com/stretchr/testify/assert"
    25  )
    26  
    27  type test struct {
    28  	name   string
    29  	dir    string
    30  	expErr error
    31  }
    32  
    33  func TestPkgContextGenerator(t *testing.T) {
    34  	tests := []test{
    35  		{
    36  			name: "pkg context should succeed on a non-nested package",
    37  			dir:  "pkg-wo-nesting",
    38  		},
    39  		{
    40  			name: "pkg context should generate on a non-nested package with existing package context",
    41  			dir:  "pkg-with-existing-ctx",
    42  		},
    43  		{
    44  			name: "pkg context should succeed on package with nested package",
    45  			dir:  "pkg-with-nesting",
    46  		},
    47  	}
    48  
    49  	for i := range tests {
    50  		test := tests[i]
    51  		t.Run(test.name, func(t *testing.T) {
    52  			pkgCtxGenerator := &PackageContextGenerator{}
    53  			out := &bytes.Buffer{}
    54  
    55  			in, err := os.ReadFile(filepath.Join("testdata", test.dir, "in.yaml"))
    56  			assert.NoError(t, err)
    57  
    58  			exp, err := os.ReadFile(filepath.Join("testdata", test.dir, "out.yaml"))
    59  			assert.NoError(t, err)
    60  
    61  			err = pkgCtxGenerator.Run(bytes.NewReader(in), out)
    62  			if err != test.expErr {
    63  				t.Errorf("exp: %v got: %v", test.expErr, err)
    64  			}
    65  			if diff := cmp.Diff(string(exp), out.String()); diff != "" {
    66  				t.Errorf("pkg context mistmach (-want +got):\n%s", diff)
    67  			}
    68  		})
    69  	}
    70  }