github.com/kovansky/hugo@v0.92.3-0.20220224232819-63076e4ff19f/tpl/collections/complement_test.go (about)

     1  // Copyright 2018 The Hugo Authors. All rights reserved.
     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  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package collections
    15  
    16  import (
    17  	"reflect"
    18  	"testing"
    19  
    20  	"github.com/gohugoio/hugo/deps"
    21  
    22  	qt "github.com/frankban/quicktest"
    23  )
    24  
    25  type StructWithSlice struct {
    26  	A string
    27  	B []string
    28  }
    29  
    30  type StructWithSlicePointers []*StructWithSlice
    31  
    32  func TestComplement(t *testing.T) {
    33  	t.Parallel()
    34  
    35  	c := qt.New(t)
    36  
    37  	ns := New(&deps.Deps{})
    38  
    39  	s1 := []TstX{{A: "a"}, {A: "b"}, {A: "d"}, {A: "e"}}
    40  	s2 := []TstX{{A: "b"}, {A: "e"}}
    41  
    42  	xa, xb, xd, xe := &StructWithSlice{A: "a"}, &StructWithSlice{A: "b"}, &StructWithSlice{A: "d"}, &StructWithSlice{A: "e"}
    43  
    44  	sp1 := []*StructWithSlice{xa, xb, xd, xe}
    45  	sp2 := []*StructWithSlice{xb, xe}
    46  
    47  	sp1_2 := StructWithSlicePointers{xa, xb, xd, xe}
    48  	sp2_2 := StructWithSlicePointers{xb, xe}
    49  
    50  	for i, test := range []struct {
    51  		s        interface{}
    52  		t        []interface{}
    53  		expected interface{}
    54  	}{
    55  		{[]string{"a", "b", "c"}, []interface{}{[]string{"c", "d"}}, []string{"a", "b"}},
    56  		{[]string{"a", "b", "c"}, []interface{}{[]string{"c", "d"}, []string{"a", "b"}}, []string{}},
    57  		{[]interface{}{"a", "b", nil}, []interface{}{[]string{"a", "d"}}, []interface{}{"b", nil}},
    58  		{[]int{1, 2, 3, 4, 5}, []interface{}{[]int{1, 3}, []string{"a", "b"}, []int{1, 2}}, []int{4, 5}},
    59  		{[]int{1, 2, 3, 4, 5}, []interface{}{[]int64{1, 3}}, []int{2, 4, 5}},
    60  		{s1, []interface{}{s2}, []TstX{{A: "a"}, {A: "d"}}},
    61  		{sp1, []interface{}{sp2}, []*StructWithSlice{xa, xd}},
    62  		{sp1_2, []interface{}{sp2_2}, StructWithSlicePointers{xa, xd}},
    63  
    64  		// Errors
    65  		{[]string{"a", "b", "c"}, []interface{}{"error"}, false},
    66  		{"error", []interface{}{[]string{"c", "d"}, []string{"a", "b"}}, false},
    67  		{[]string{"a", "b", "c"}, []interface{}{[][]string{{"c", "d"}}}, false},
    68  		{
    69  			[]interface{}{[][]string{{"c", "d"}}},
    70  			[]interface{}{[]string{"c", "d"}, []string{"a", "b"}},
    71  			[]interface{}{[][]string{{"c", "d"}}},
    72  		},
    73  	} {
    74  
    75  		errMsg := qt.Commentf("[%d]", i)
    76  
    77  		args := append(test.t, test.s)
    78  
    79  		result, err := ns.Complement(args...)
    80  
    81  		if b, ok := test.expected.(bool); ok && !b {
    82  			c.Assert(err, qt.Not(qt.IsNil), errMsg)
    83  			continue
    84  		}
    85  
    86  		c.Assert(err, qt.IsNil, errMsg)
    87  
    88  		if !reflect.DeepEqual(test.expected, result) {
    89  			t.Fatalf("%s got\n%T: %v\nexpected\n%T: %v", errMsg, result, result, test.expected, test.expected)
    90  		}
    91  	}
    92  
    93  	_, err := ns.Complement()
    94  	c.Assert(err, qt.Not(qt.IsNil))
    95  	_, err = ns.Complement([]string{"a", "b"})
    96  	c.Assert(err, qt.Not(qt.IsNil))
    97  }