istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/test/util/yml/parts_test.go (about)

     1  // Copyright Istio 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 yml_test
    16  
    17  import (
    18  	"testing"
    19  
    20  	. "github.com/onsi/gomega"
    21  
    22  	"istio.io/istio/pkg/test/util/yml"
    23  )
    24  
    25  func TestEmptyDoc(t *testing.T) {
    26  	g := NewWithT(t)
    27  
    28  	yaml := `
    29  `
    30  	parts := yml.SplitString(yaml)
    31  	g.Expect(len(parts)).To(Equal(0))
    32  
    33  	yaml = yml.JoinString(parts...)
    34  	g.Expect(yaml).To(Equal(""))
    35  }
    36  
    37  func TestSplitWithEmptyPart(t *testing.T) {
    38  	expected := []string{
    39  		"a",
    40  		"b",
    41  	}
    42  
    43  	cases := []struct {
    44  		name string
    45  		doc  string
    46  	}{
    47  		{
    48  			name: "beginningNoCR",
    49  			doc: `---
    50  a
    51  ---
    52  b
    53  `,
    54  		},
    55  		{
    56  			name: "beginningWithCR",
    57  			doc: `
    58  ---
    59  a
    60  ---
    61  b
    62  `,
    63  		},
    64  		{
    65  			name: "middle",
    66  			doc: `a
    67  ---
    68  ---
    69  b
    70  `,
    71  		},
    72  		{
    73  			name: "end",
    74  			doc: `
    75  a
    76  ---
    77  b
    78  ---
    79  `,
    80  		},
    81  	}
    82  
    83  	for _, c := range cases {
    84  		t.Run(c.name, func(t *testing.T) {
    85  			parts := yml.SplitString(c.doc)
    86  			g := NewWithT(t)
    87  			g.Expect(parts).To(Equal(expected))
    88  		})
    89  	}
    90  }
    91  
    92  func TestSplitWithNestedDocument(t *testing.T) {
    93  	doc := `
    94  b
    95      b1
    96      ---
    97      b2
    98  `
    99  	expected := []string{
   100  		`b
   101      b1
   102      ---
   103      b2`,
   104  	}
   105  
   106  	g := NewWithT(t)
   107  	parts := yml.SplitString(doc)
   108  	g.Expect(parts).To(Equal(expected))
   109  }
   110  
   111  func TestJoinRemovesEmptyParts(t *testing.T) {
   112  	parts := []string{
   113  		`---
   114  ---
   115  ---
   116  `,
   117  		`
   118  ---
   119  a
   120  ---
   121  `,
   122  		`
   123  b
   124  ---
   125  `,
   126  	}
   127  
   128  	expected := `a
   129  ---
   130  b`
   131  
   132  	g := NewWithT(t)
   133  	doc := yml.JoinString(parts...)
   134  	g.Expect(doc).To(Equal(expected))
   135  }