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Copy pathstringutil_test.go
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220 lines (213 loc) · 3.95 KB
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package stringutil
import "testing"
func TestCollapseWhitespace(t *testing.T) {
tests := []struct {
name string
input string
want string
}{
{
name: "no whitespace changes needed",
input: "hello world",
want: "hello world",
},
{
name: "newlines to space",
input: "hello\nworld",
want: "hello world",
},
{
name: "multiple newlines",
input: "hello\n\n\nworld",
want: "hello world",
},
{
name: "tabs to space",
input: "hello\tworld",
want: "hello world",
},
{
name: "mixed whitespace",
input: "hello\n\t world",
want: "hello world",
},
{
name: "leading and trailing whitespace",
input: " hello world ",
want: "hello world",
},
{
name: "multiline text",
input: "Fix the bug\nin the login\npage",
want: "Fix the bug in the login page",
},
{
name: "empty string",
input: "",
want: "",
},
{
name: "only whitespace",
input: " \n\t ",
want: "",
},
{
name: "carriage return",
input: "hello\r\nworld",
want: "hello world",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := CollapseWhitespace(tt.input)
if got != tt.want {
t.Errorf("CollapseWhitespace(%q) = %q, want %q", tt.input, got, tt.want)
}
})
}
}
func TestTruncateRunes(t *testing.T) {
tests := []struct {
name string
input string
maxRunes int
suffix string
want string
}{
{
name: "ascii no truncation needed",
input: "hello",
maxRunes: 10,
suffix: "...",
want: "hello",
},
{
name: "ascii truncation",
input: "hello world",
maxRunes: 8,
suffix: "...",
want: "hello...",
},
{
name: "emoji no truncation needed",
input: "hello 🎉",
maxRunes: 10,
suffix: "...",
want: "hello 🎉",
},
{
name: "emoji truncation preserves emoji",
input: "hello 🎉 world",
maxRunes: 10,
suffix: "...",
want: "hello 🎉...",
},
{
name: "chinese characters",
input: "你好世界",
maxRunes: 3,
suffix: "...",
want: "...",
},
{
name: "chinese characters longer",
input: "你好世界再见",
maxRunes: 5,
suffix: "...",
want: "你好...",
},
{
name: "mixed unicode needs truncation",
input: "hello 世界 🎉 more",
maxRunes: 10,
suffix: "...",
want: "hello 世...",
},
{
name: "empty string",
input: "",
maxRunes: 10,
suffix: "...",
want: "",
},
{
name: "exact length",
input: "hello",
maxRunes: 5,
suffix: "...",
want: "hello",
},
{
name: "no suffix",
input: "hello world",
maxRunes: 5,
suffix: "",
want: "hello",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := TruncateRunes(tt.input, tt.maxRunes, tt.suffix)
if got != tt.want {
t.Errorf("TruncateRunes(%q, %d, %q) = %q, want %q",
tt.input, tt.maxRunes, tt.suffix, got, tt.want)
}
})
}
}
func TestCapitalizeFirst(t *testing.T) {
tests := []struct {
name string
input string
want string
}{
{
name: "ascii lowercase",
input: "hello",
want: "Hello",
},
{
name: "ascii already uppercase",
input: "Hello",
want: "Hello",
},
{
name: "empty string",
input: "",
want: "",
},
{
name: "single char",
input: "h",
want: "H",
},
{
name: "unicode lowercase",
input: "über",
want: "Über",
},
{
name: "starts with emoji",
input: "🎉party",
want: "🎉party",
},
{
name: "chinese character",
input: "你好",
want: "你好", // Chinese doesn't have case
},
{
name: "greek lowercase",
input: "αβγ",
want: "Αβγ",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := CapitalizeFirst(tt.input)
if got != tt.want {
t.Errorf("CapitalizeFirst(%q) = %q, want %q", tt.input, got, tt.want)
}
})
}
}