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|
package context
import (
"fmt"
"strings"
"testing"
"github.com/samber/lo"
"github.com/stretchr/testify/assert"
)
// wrapping string in my own type to give it an ID method which is required for list items
type mystring string
func (self mystring) ID() string {
return string(self)
}
func TestListRenderer_renderLines(t *testing.T) {
scenarios := []struct {
name string
modelStrings []mystring
nonModelIndices []int
startIdx int
endIdx int
expectedOutput string
}{
{
name: "Render whole list",
modelStrings: []mystring{"a", "b", "c"},
startIdx: 0,
endIdx: 3,
expectedOutput: `
a
b
c`,
},
{
name: "Partial list, beginning",
modelStrings: []mystring{"a", "b", "c"},
startIdx: 0,
endIdx: 2,
expectedOutput: `
a
b`,
},
{
name: "Partial list, end",
modelStrings: []mystring{"a", "b", "c"},
startIdx: 1,
endIdx: 3,
expectedOutput: `
b
c`,
},
{
name: "Pass an endIdx greater than the model length",
modelStrings: []mystring{"a", "b", "c"},
startIdx: 2,
endIdx: 5,
expectedOutput: `
c`,
},
{
name: "Whole list with section headers",
modelStrings: []mystring{"a", "b", "c"},
nonModelIndices: []int{1, 3},
startIdx: 0,
endIdx: 5,
expectedOutput: `
a
--- 1 (0) ---
b
c
--- 3 (1) ---`,
},
{
name: "Multiple consecutive headers",
modelStrings: []mystring{"a", "b", "c"},
nonModelIndices: []int{0, 0, 2, 2, 2},
startIdx: 0,
endIdx: 8,
expectedOutput: `
--- 0 (0) ---
--- 0 (1) ---
a
b
--- 2 (2) ---
--- 2 (3) ---
--- 2 (4) ---
c`,
},
{
name: "Partial list with headers, beginning",
modelStrings: []mystring{"a", "b", "c"},
nonModelIndices: []int{1, 3},
startIdx: 0,
endIdx: 3,
expectedOutput: `
a
--- 1 (0) ---
b`,
},
{
name: "Partial list with headers, end (beyond end index)",
modelStrings: []mystring{"a", "b", "c"},
nonModelIndices: []int{1, 3},
startIdx: 2,
endIdx: 7,
expectedOutput: `
b
c
--- 3 (1) ---`,
},
}
for _, s := range scenarios {
t.Run(s.name, func(t *testing.T) {
viewModel := NewListViewModel[mystring](func() []mystring { return s.modelStrings })
var getNonModelItems func() []*NonModelItem
if s.nonModelIndices != nil {
getNonModelItems = func() []*NonModelItem {
return lo.Map(s.nonModelIndices, func(modelIndex int, nonModelIndex int) *NonModelItem {
return &NonModelItem{
Index: modelIndex,
Content: fmt.Sprintf("--- %d (%d) ---", modelIndex, nonModelIndex),
}
})
}
}
self := &ListRenderer{
list: viewModel,
getDisplayStrings: func(startIdx int, endIdx int) [][]string {
return lo.Map(s.modelStrings[startIdx:endIdx],
func(s mystring, _ int) []string { return []string{string(s)} })
},
getNonModelItems: getNonModelItems,
}
expectedOutput := strings.Join(lo.Map(
strings.Split(strings.TrimPrefix(s.expectedOutput, "\n"), "\n"),
func(line string, _ int) string { return strings.TrimSpace(line) }), "\n")
assert.Equal(t, expectedOutput, self.renderLines(s.startIdx, s.endIdx))
})
}
}
type myint int
func (self myint) ID() string {
return fmt.Sprint(int(self))
}
func TestListRenderer_ModelIndexToViewIndex_and_back(t *testing.T) {
scenarios := []struct {
name string
numModelItems int
nonModelIndices []int
modelIndices []int
expectedViewIndices []int
viewIndices []int
expectedModelIndices []int
}{
{
name: "no headers (no getNonModelItems provided)",
numModelItems: 3,
nonModelIndices: nil, // no get
modelIndices: []int{-1, 0, 1, 2, 3, 4},
expectedViewIndices: []int{0, 0, 1, 2, 3, 3},
viewIndices: []int{-1, 0, 1, 2, 3, 4},
expectedModelIndices: []int{0, 0, 1, 2, 3, 3},
},
{
name: "no headers (getNonModelItems returns zero items)",
numModelItems: 3,
nonModelIndices: []int{},
modelIndices: []int{-1, 0, 1, 2, 3, 4},
expectedViewIndices: []int{0, 0, 1, 2, 3, 3},
viewIndices: []int{-1, 0, 1, 2, 3, 4},
expectedModelIndices: []int{0, 0, 1, 2, 3, 3},
},
{
name: "basic",
numModelItems: 3,
nonModelIndices: []int{1, 2},
/*
0: model 0
1: --- header 0 ---
2: model 1
3: --- header 1 ---
4: model 2
*/
modelIndices: []int{-1, 0, 1, 2, 3, 4},
expectedViewIndices: []int{0, 0, 2, 4, 5, 5},
viewIndices: []int{-1, 0, 1, 2, 3, 4, 5, 6},
expectedModelIndices: []int{0, 0, 1, 1, 2, 2, 3, 3},
},
{
name: "consecutive section headers",
numModelItems: 3,
nonModelIndices: []int{0, 0, 2, 2, 2, 3, 3},
/*
0: --- header 0 ---
1: --- header 1 ---
2: model 0
3: model 1
4: --- header 2 ---
5: --- header 3 ---
6: --- header 4 ---
7: model 2
8: --- header 5 ---
9: --- header 6 ---
*/
modelIndices: []int{-1, 0, 1, 2, 3, 4},
expectedViewIndices: []int{2, 2, 3, 7, 10, 10},
viewIndices: []int{-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11},
expectedModelIndices: []int{0, 0
|
