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530 lines (482 loc) · 11.9 KB
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package rego
import (
"os"
"path/filepath"
"strings"
"testing"
"github.com/gdamore/tcell/v2"
"github.com/mattn/go-runewidth"
)
// =============================================================================
// 辅助函数测试
// =============================================================================
func TestCalculateCursorPosFromClick(t *testing.T) {
tests := []struct {
name string
text string
clickRow int
clickCol int
expected int
}{
// 单行测试
{
name: "单行-点击开头",
text: "hello",
clickRow: 0,
clickCol: 0,
expected: 0,
},
{
name: "单行-点击中间",
text: "hello",
clickRow: 0,
clickCol: 2,
expected: 2,
},
{
name: "单行-点击末尾",
text: "hello",
clickRow: 0,
clickCol: 5,
expected: 5,
},
{
name: "单行-点击超出末尾",
text: "hello",
clickRow: 0,
clickCol: 10,
expected: 5,
},
// 中文测试（每个中文占2列宽度）
{
name: "中文-点击第一个字符",
text: "你好世界",
clickRow: 0,
clickCol: 0,
expected: 0,
},
{
name: "中文-点击第一个字符中间",
text: "你好世界",
clickRow: 0,
clickCol: 1,
expected: 0,
},
{
name: "中文-点击第二个字符开头",
text: "你好世界",
clickRow: 0,
clickCol: 2,
expected: 1,
},
{
name: "中文-点击末尾",
text: "你好世界",
clickRow: 0,
clickCol: 8,
expected: 4,
},
// 多行测试
{
name: "多行-第一行开头",
text: "line1\nline2\nline3",
clickRow: 0,
clickCol: 0,
expected: 0,
},
{
name: "多行-第二行开头",
text: "line1\nline2\nline3",
clickRow: 1,
clickCol: 0,
expected: 6, // "line1\n" = 6 chars
},
{
name: "多行-第二行中间",
text: "line1\nline2\nline3",
clickRow: 1,
clickCol: 3,
expected: 9, // "line1\n" + "lin" = 6 + 3
},
{
name: "多行-第三行",
text: "line1\nline2\nline3",
clickRow: 2,
clickCol: 2,
expected: 14, // "line1\nline2\n" + "li" = 12 + 2
},
// 边界情况
{
name: "空字符串",
text: "",
clickRow: 0,
clickCol: 0,
expected: 0,
},
{
name: "负数行号",
text: "hello",
clickRow: -1,
clickCol: 0,
expected: 0,
},
{
name: "超出行号",
text: "line1\nline2",
clickRow: 5,
clickCol: 0,
expected: 6, // 应该定位到最后一行开头
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := calculateCursorPosFromClick(tt.text, tt.clickRow, tt.clickCol)
if got != tt.expected {
t.Errorf("calculateCursorPosFromClick(%q, %d, %d) = %d, want %d",
tt.text, tt.clickRow, tt.clickCol, got, tt.expected)
}
})
}
}
func TestFindPosAbove(t *testing.T) {
tests := []struct {
name string
text string
current int
expected int
}{
{
name: "第一行-无法向上",
text: "hello",
current: 2,
expected: 0,
},
{
name: "第二行开头-移到第一行开头",
text: "line1\nline2",
current: 6, // "line2" 开头
expected: 0, // "line1" 开头
},
{
name: "第二行中间-保持列位置",
text: "line1\nline2",
current: 8, // "li|ne2"
expected: 2, // "li|ne1"
},
{
name: "第二行超过第一行长度",
text: "ab\nline2",
current: 6, // "lin|e2"
expected: 2, // "ab" 末尾
},
{
name: "三行-从第三行到第二行",
text: "line1\nline2\nline3",
current: 14, // "li|ne3"
expected: 8, // "li|ne2"
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
runes := []rune(tt.text)
got := findPosAbove(runes, tt.current)
if got != tt.expected {
t.Errorf("findPosAbove(%q, %d) = %d, want %d",
tt.text, tt.current, got, tt.expected)
}
})
}
}
func TestFindPosBelow(t *testing.T) {
tests := []struct {
name string
text string
current int
expected int
}{
{
name: "最后一行-无法向下",
text: "hello",
current: 2,
expected: 5, // 移到末尾
},
{
name: "第一行开头-移到第二行开头",
text: "line1\nline2",
current: 0,
expected: 6,
},
{
name: "第一行中间-保持列位置",
text: "line1\nline2",
current: 2, // "li|ne1"
expected: 8, // "li|ne2"
},
{
name: "第一行超过第二行长度",
text: "line1\nab",
current: 4, // "line|1"
expected: 8, // "ab" 末尾
},
{
name: "三行-从第一行到第二行",
text: "line1\nline2\nline3",
current: 2, // "li|ne1"
expected: 8, // "li|ne2"
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
runes := []rune(tt.text)
got := findPosBelow(runes, tt.current)
if got != tt.expected {
t.Errorf("findPosBelow(%q, %d) = %d, want %d",
tt.text, tt.current, got, tt.expected)
}
})
}
}
// =============================================================================
// 混合中英文测试
// =============================================================================
func TestCalculateCursorPosFromClick_MixedContent(t *testing.T) {
tests := []struct {
name string
text string
clickRow int
clickCol int
expected int
}{
{
name: "中英混合-点击英文部分",
text: "Hello你好",
clickRow: 0,
clickCol: 3, // "Hel" 之后
expected: 3,
},
{
name: "中英混合-点击第一个中文",
text: "Hello你好",
clickRow: 0,
clickCol: 5, // "Hello" 之后，中文开始
expected: 5,
},
{
name: "中英混合-点击第二个中文",
text: "Hello你好",
clickRow: 0,
clickCol: 7, // "Hello你" 之后 (5+2=7)
expected: 6,
},
{
name: "多行中英混合",
text: "Hello\n你好世界",
clickRow: 1,
clickCol: 4, // 第二行，"你好" 之后 (2+2=4)
expected: 8, // "Hello\n" + "你好" = 6 + 2
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := calculateCursorPosFromClick(tt.text, tt.clickRow, tt.clickCol)
if got != tt.expected {
t.Errorf("calculateCursorPosFromClick(%q, %d, %d) = %d, want %d",
tt.text, tt.clickRow, tt.clickCol, got, tt.expected)
}
})
}
}
// =============================================================================
// Snapshot 测试辅助函数
// =============================================================================
func newTestScreen(w, h int) tcell.SimulationScreen {
s := tcell.NewSimulationScreen("")
s.Init()
s.SetSize(w, h)
return s
}
func getScreenContent(s tcell.SimulationScreen) string {
w, h := s.Size()
var res strings.Builder
for y := 0; y < h; y++ {
x := 0
for x < w {
r, _, _, width := s.GetContent(x, y)
if r == 0 {
// 空单元格，输出空格
res.WriteRune(' ')
x++
} else {
// 输出字符
res.WriteRune(r)
// 宽字符（如中文）占用多列，跳过占位符单元格
// 不写入占位符，让快照文件更简洁
x += width
}
}
if y < h-1 {
res.WriteRune('\n')
}
}
return res.String()
}
// compareByDisplayWidth 使用显示宽度比较两个字符串
// 这样可以正确处理宽字符（如中文）的情况
// 文本文件无法精确表示终端单元格布局，所以使用显示宽度比较更准确
func compareByDisplayWidth(expected, actual string) bool {
expLines := strings.Split(expected, "\n")
actLines := strings.Split(actual, "\n")
if len(expLines) != len(actLines) {
return false
}
for i := 0; i < len(expLines); i++ {
expLine := expLines[i]
actLine := actLines[i]
// 计算每行的显示宽度
expWidth := runewidth.StringWidth(expLine)
actWidth := runewidth.StringWidth(actLine)
if expWidth != actWidth {
return false
}
// 如果显示宽度相同，逐字符比较（考虑显示宽度）
// 这样可以确保字符内容和对齐都正确
expRunes := []rune(expLine)
actRunes := []rune(actLine)
expPos := 0
actPos := 0
expCol := 0
actCol := 0
for expPos < len(expRunes) && actPos < len(actRunes) {
expR := expRunes[expPos]
actR := actRunes[actPos]
expW := runewidth.RuneWidth(expR)
actW := runewidth.RuneWidth(actR)
// 如果字符不同，比较失败
if expR != actR {
return false
}
expPos++
actPos++
expCol += expW
actCol += actW
}
// 检查是否都处理完了，并且列位置对齐
if expPos < len(expRunes) || actPos < len(actRunes) || expCol != actCol {
return false
}
}
return true
}
func assertSnapshot(t *testing.T, screen tcell.SimulationScreen, snapshotName string) {
t.Helper()
content := getScreenContent(screen)
snapshotPath := filepath.Join("testdata", "snapshots", snapshotName+".txt")
// 如果环境变量 REGO_UPDATE_SNAPSHOTS 为 true，则更新快照
if os.Getenv("REGO_UPDATE_SNAPSHOTS") == "true" {
err := os.MkdirAll(filepath.Dir(snapshotPath), 0755)
if err != nil {
t.Fatalf("Failed to create snapshot directory: %v", err)
}
err = os.WriteFile(snapshotPath, []byte(content), 0644)
if err != nil {
t.Fatalf("Failed to write snapshot: %v", err)
}
t.Logf("Updated snapshot: %s", snapshotPath)
return
}
// 读取现有快照
expected, err := os.ReadFile(snapshotPath)
if err != nil {
if os.IsNotExist(err) {
t.Fatalf("Snapshot %s does not exist. Run with REGO_UPDATE_SNAPSHOTS=true to create it.", snapshotPath)
}
t.Fatalf("Failed to read snapshot: %v", err)
}
expectedStr := string(expected)
// 使用显示宽度比较，而不是字符位置比较
// 这样可以正确处理宽字符（如中文）的情况
if !compareByDisplayWidth(expectedStr, content) {
t.Errorf("Snapshot mismatch for %s\n\nExpected:\n%s\n\nGot:\n%s",
snapshotName, expectedStr, content)
}
}
// =============================================================================
// Snapshot 测试
// =============================================================================
func TestTextInput_Snapshot_Empty(t *testing.T) {
app := func(c C) Node {
return TextInput(c.Child("input"), TextInputProps{
Placeholder: "请输入...",
Width: 30,
})
}
screen := newTestScreen(40, 10)
tr := NewTestRuntime(app, screen)
tr.Render()
assertSnapshot(t, screen, "text_input_empty")
}
func TestTextInput_Snapshot_WithValue(t *testing.T) {
app := func(c C) Node {
return TextInput(c.Child("input"), TextInputProps{
Value: "Hello World",
Width: 30,
})
}
screen := newTestScreen(40, 10)
tr := NewTestRuntime(app, screen)
tr.Render()
assertSnapshot(t, screen, "text_input_with_value")
}
func TestTextInput_Snapshot_WithLabel(t *testing.T) {
app := func(c C) Node {
return TextInput(c.Child("input"), TextInputProps{
Label: "用户名",
Value: "admin",
Placeholder: "请输入用户名",
Width: 30,
})
}
screen := newTestScreen(40, 10)
tr := NewTestRuntime(app, screen)
tr.Render()
assertSnapshot(t, screen, "text_input_with_label")
}
func TestTextInput_Snapshot_Password(t *testing.T) {
app := func(c C) Node {
return TextInput(c.Child("input"), TextInputProps{
Value: "secret123",
Password: true,
Width: 30,
})
}
screen := newTestScreen(40, 10)
tr := NewTestRuntime(app, screen)
tr.Render()
assertSnapshot(t, screen, "text_input_password")
}
func TestTextInput_Snapshot_Chinese(t *testing.T) {
app := func(c C) Node {
return TextInput(c.Child("input"), TextInputProps{
Value: "你好世界",
Width: 30,
})
}
screen := newTestScreen(40, 10)
tr := NewTestRuntime(app, screen)
tr.Render()
assertSnapshot(t, screen, "text_input_chinese")
}
func TestTextInput_Snapshot_Multiline(t *testing.T) {
app := func(c C) Node {
return TextInput(c.Child("input"), TextInputProps{
Value: "Line 1\nLine 2\nLine 3",
Multiline: true,
Width: 30,
Height: 6,
})
}
screen := newTestScreen(40, 10)
tr := NewTestRuntime(app, screen)
tr.Render()
assertSnapshot(t, screen, "text_input_multiline")
}