github.com/anakojm/hugo-katex@v0.0.0-20231023141351-42d6f5de9c0b/tpl/collections/index_test.go (about)

     1  // Copyright 2017 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  	"fmt"
    18  	"testing"
    19  
    20  	"github.com/gohugoio/hugo/common/maps"
    21  
    22  	qt "github.com/frankban/quicktest"
    23  )
    24  
    25  func TestIndex(t *testing.T) {
    26  	t.Parallel()
    27  	c := qt.New(t)
    28  	ns := newNs()
    29  
    30  	var (
    31  		emptyInterface any
    32  		nilPointer     *int
    33  	)
    34  
    35  	for i, test := range []struct {
    36  		item    any
    37  		indices []any
    38  		expect  any
    39  		isErr   bool
    40  	}{
    41  		{[]int{0, 1}, []any{0}, 0, false},
    42  		{[]int{0, 1}, []any{9}, nil, false}, // index out of range
    43  		{[]uint{0, 1}, nil, []uint{0, 1}, false},
    44  		{[][]int{{1, 2}, {3, 4}}, []any{0, 0}, 1, false},
    45  		{map[int]int{1: 10, 2: 20}, []any{1}, 10, false},
    46  		{map[int]int{1: 10, 2: 20}, []any{0}, 0, false},
    47  		{map[string]map[string]string{"a": {"b": "c"}}, []any{"a", "b"}, "c", false},
    48  		{[]map[string]map[string]string{{"a": {"b": "c"}}}, []any{0, "a", "b"}, "c", false},
    49  		{map[string]map[string]any{"a": {"b": []string{"c", "d"}}}, []any{"a", "b", 1}, "d", false},
    50  		{maps.Params{"a": "av"}, []any{"A"}, "av", false},
    51  		{maps.Params{"a": map[string]any{"b": "bv"}}, []any{"A", "B"}, "bv", false},
    52  
    53  		// These used to be errors.
    54  		// See issue 10489.
    55  		{nil, nil, nil, false},
    56  		{nil, []any{0}, nil, false},
    57  		{emptyInterface, []any{0}, nil, false},
    58  		{nilPointer, []any{0}, nil, false},
    59  
    60  		// errors
    61  		{[]int{0, 1}, []any{"1"}, nil, true},
    62  		{[]int{0, 1}, []any{nil}, nil, true},
    63  		{tstNoStringer{}, []any{0}, nil, true},
    64  	} {
    65  
    66  		c.Run(fmt.Sprintf("vararg %d", i), func(c *qt.C) {
    67  			errMsg := qt.Commentf("[%d] %v", i, test)
    68  
    69  			result, err := ns.Index(test.item, test.indices...)
    70  
    71  			if test.isErr {
    72  				c.Assert(err, qt.Not(qt.IsNil), errMsg)
    73  				return
    74  			}
    75  			c.Assert(err, qt.IsNil, errMsg)
    76  			c.Assert(result, qt.DeepEquals, test.expect, errMsg)
    77  		})
    78  
    79  		c.Run(fmt.Sprintf("slice %d", i), func(c *qt.C) {
    80  			errMsg := qt.Commentf("[%d] %v", i, test)
    81  
    82  			result, err := ns.Index(test.item, test.indices)
    83  
    84  			if test.isErr {
    85  				c.Assert(err, qt.Not(qt.IsNil), errMsg)
    86  				return
    87  			}
    88  			c.Assert(err, qt.IsNil, errMsg)
    89  			c.Assert(result, qt.DeepEquals, test.expect, errMsg)
    90  		})
    91  	}
    92  }