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package main
import "testing"
func Test_Editor_insert(test *testing.T) {
cases := []struct {
comment string
e Editor
insert []rune
wantValue []rune
}{
{
comment: "prepend ASCII char",
e: Editor{
value: []rune(`abc`),
cursor: 0,
},
insert: []rune{'X'},
wantValue: []rune(`Xabc`),
},
{
comment: "prepend UTF char",
e: Editor{
value: []rune(`abc`),
cursor: 0,
},
insert: []rune{'☃'},
wantValue: []rune(`☃abc`),
},
{
comment: "insert ASCII char",
e: Editor{
value: []rune(`abc`),
cursor: 1,
},
insert: []rune{'X'},
wantValue: []rune(`aXbc`),
},
{
comment: "insert UTF char",
e: Editor{
value: []rune(`abc`),
cursor: 1,
},
insert: []rune{'☃'},
wantValue: []rune(`a☃bc`),
},
{
comment: "append ASCII char",
e: Editor{
value: []rune(`abc`),
cursor: 3,
},
insert: []rune{'X'},
wantValue: []rune(`abcX`),
},
{
comment: "append UTF char",
e: Editor{
value: []rune(`abc`),
cursor: 3,
},
insert: []rune{'☃'},
wantValue: []rune(`abc☃`),
},
{
comment: "insert 2 ASCII chars",
e: Editor{
value: []rune(`abc`),
cursor: 1,
},
insert: []rune{'X', 'Y'},
wantValue: []rune(`aXYbc`),
},
}
for _, c := range cases {
c.e.insert(c.insert...)
if string(c.e.value) != string(c.wantValue) {
test.Errorf("%q: bad value\nwant: %q\nhave: %q", c.comment, c.wantValue, c.e.value)
}
}
}
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