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termdash/private/faketerm/diff_test.go
2022-07-07 13:46:45 -04:00

84 lines
2.0 KiB
Go

// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package faketerm
import (
"image"
"testing"
"github.com/mum4k/termdash/cell"
)
func TestDiff(t *testing.T) {
tests := []struct {
desc string
term1 *Terminal
term2 *Terminal
wantDiff bool
}{
{
desc: "no diff on equal terminals",
term1: func() *Terminal {
t := MustNew(image.Point{2, 2})
t.SetCell(image.Point{0, 0}, 'a')
return t
}(),
term2: func() *Terminal {
t := MustNew(image.Point{2, 2})
t.SetCell(image.Point{0, 0}, 'a')
return t
}(),
wantDiff: false,
},
{
desc: "reports diff on when cell runes differ",
term1: func() *Terminal {
t := MustNew(image.Point{2, 2})
t.SetCell(image.Point{0, 0}, 'a')
return t
}(),
term2: func() *Terminal {
t := MustNew(image.Point{2, 2})
t.SetCell(image.Point{1, 1}, 'a')
return t
}(),
wantDiff: true,
},
{
desc: "reports diff on when cell options differ",
term1: func() *Terminal {
t := MustNew(image.Point{2, 2})
t.SetCell(image.Point{0, 0}, 'a', cell.Bold())
return t
}(),
term2: func() *Terminal {
t := MustNew(image.Point{2, 2})
t.SetCell(image.Point{0, 0}, 'a')
return t
}(),
wantDiff: true,
},
}
for _, tc := range tests {
t.Run(tc.desc, func(t *testing.T) {
gotDiff := Diff(tc.term1, tc.term2)
if (gotDiff != "") != tc.wantDiff {
t.Errorf("Diff -> unexpected diff while wantDiff:%v, the diff:\n%s", tc.wantDiff, gotDiff)
}
})
}
}