mirror of https://github.com/mum4k/termdash.git
353 lines
7.7 KiB
Go
353 lines
7.7 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package area
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import (
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"fmt"
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"image"
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"testing"
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"github.com/kylelemons/godebug/pretty"
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)
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func TestSize(t *testing.T) {
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tests := []struct {
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desc string
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area image.Rectangle
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want image.Point
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}{
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{
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desc: "zero area",
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area: image.Rect(0, 0, 0, 0),
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want: image.Point{0, 0},
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},
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{
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desc: "1-D on X axis",
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area: image.Rect(0, 0, 1, 0),
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want: image.Point{1, 0},
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},
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{
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desc: "1-D on Y axis",
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area: image.Rect(0, 0, 0, 1),
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want: image.Point{0, 1},
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},
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{
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desc: "area with a single cell",
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area: image.Rect(0, 0, 1, 1),
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want: image.Point{1, 1},
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},
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{
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desc: "a rectangle",
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area: image.Rect(0, 0, 2, 3),
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want: image.Point{2, 3},
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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got := Size(tc.area)
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if diff := pretty.Compare(tc.want, got); diff != "" {
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t.Errorf("Size => unexpected diff (-want, +got):\n%s", diff)
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}
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})
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}
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}
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func TestFromSize(t *testing.T) {
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tests := []struct {
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desc string
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size image.Point
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want image.Rectangle
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wantErr bool
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}{
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{
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desc: "negative size on X axis",
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size: image.Point{-1, 0},
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wantErr: true,
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},
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{
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desc: "negative size on Y axis",
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size: image.Point{0, -1},
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wantErr: true,
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},
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{
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desc: "zero size",
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},
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{
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desc: "1-D on X axis",
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size: image.Point{1, 0},
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want: image.Rect(0, 0, 1, 0),
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},
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{
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desc: "1-D on Y axis",
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size: image.Point{0, 1},
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want: image.Rect(0, 0, 0, 1),
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},
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{
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desc: "a rectangle",
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size: image.Point{2, 3},
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want: image.Rect(0, 0, 2, 3),
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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got, err := FromSize(tc.size)
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if (err != nil) != tc.wantErr {
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t.Fatalf("FromSize => unexpected error: %v, wantErr: %v", err, tc.wantErr)
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}
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if err != nil {
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return
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}
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if diff := pretty.Compare(tc.want, got); diff != "" {
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t.Errorf("FromSize => unexpected diff (-want, +got):\n%s", diff)
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}
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})
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}
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}
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func TestHSplit(t *testing.T) {
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tests := []struct {
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desc string
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area image.Rectangle
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want1 image.Rectangle
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want2 image.Rectangle
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}{
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{
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desc: "zero area to begin with",
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area: image.ZR,
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want1: image.ZR,
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want2: image.ZR,
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},
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{
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desc: "splitting results in zero height area",
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area: image.Rect(1, 1, 2, 2),
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want1: image.ZR,
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want2: image.ZR,
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},
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{
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desc: "splits area with even height",
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area: image.Rect(1, 1, 3, 3),
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want1: image.Rect(1, 1, 3, 2),
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want2: image.Rect(1, 2, 3, 3),
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},
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{
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desc: "splits area with odd height",
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area: image.Rect(1, 1, 4, 4),
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want1: image.Rect(1, 1, 4, 2),
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want2: image.Rect(1, 2, 4, 4),
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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got1, got2 := HSplit(tc.area)
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if diff := pretty.Compare(tc.want1, got1); diff != "" {
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t.Errorf("HSplit => first value unexpected diff (-want, +got):\n%s", diff)
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}
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if diff := pretty.Compare(tc.want2, got2); diff != "" {
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t.Errorf("HSplit => second value unexpected diff (-want, +got):\n%s", diff)
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}
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})
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}
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}
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func TestVSplit(t *testing.T) {
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tests := []struct {
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desc string
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area image.Rectangle
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want1 image.Rectangle
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want2 image.Rectangle
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}{
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{
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desc: "zero area to begin with",
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area: image.ZR,
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want1: image.ZR,
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want2: image.ZR,
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},
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{
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desc: "splitting results in zero width area",
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area: image.Rect(1, 1, 2, 2),
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want1: image.ZR,
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want2: image.ZR,
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},
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{
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desc: "splits area with even width",
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area: image.Rect(1, 1, 3, 3),
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want1: image.Rect(1, 1, 2, 3),
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want2: image.Rect(2, 1, 3, 3),
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},
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{
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desc: "splits area with odd width",
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area: image.Rect(1, 1, 4, 4),
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want1: image.Rect(1, 1, 2, 4),
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want2: image.Rect(2, 1, 4, 4),
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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got1, got2 := VSplit(tc.area)
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if diff := pretty.Compare(tc.want1, got1); diff != "" {
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t.Errorf("VSplit => first value unexpected diff (-want, +got):\n%s", diff)
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}
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if diff := pretty.Compare(tc.want2, got2); diff != "" {
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t.Errorf("VSplit => second value unexpected diff (-want, +got):\n%s", diff)
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}
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})
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}
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}
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func TestExcludeBorder(t *testing.T) {
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tests := []struct {
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desc string
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area image.Rectangle
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want image.Rectangle
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}{
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{
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desc: "zero area to begin with",
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area: image.ZR,
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want: image.ZR,
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},
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{
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desc: "not enough space to exclude the border",
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area: image.Rect(1, 1, 2, 2),
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want: image.ZR,
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},
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{
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desc: "excluding the border results in zero size area",
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area: image.Rect(2, 2, 4, 4),
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want: image.Rect(3, 3, 3, 3),
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},
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{
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desc: "excludes the border",
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area: image.Rect(1, 1, 3, 4),
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want: image.Rect(2, 2, 2, 3),
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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got := ExcludeBorder(tc.area)
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if diff := pretty.Compare(tc.want, got); diff != "" {
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t.Errorf("ExcludeBorder => unexpected diff (-want, +got):\n%s", diff)
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}
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})
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}
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}
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func TestFindGCF(t *testing.T) {
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tests := []struct {
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a int
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b int
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want int
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}{
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{0, 0, 0},
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{0, 1, 0},
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{1, 0, 0},
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{1, 1, 1},
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{2, 2, 2},
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{50, 35, 5},
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{16, 88, 8},
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}
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for _, tc := range tests {
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t.Run(fmt.Sprintf("findGCF(%d,%d)", tc.a, tc.b), func(t *testing.T) {
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if got := findGCF(tc.a, tc.b); got != tc.want {
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t.Errorf("findGCF(%d,%d) => got %v, want %v", tc.a, tc.b, got, tc.want)
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}
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})
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}
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}
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func TestWithRatio(t *testing.T) {
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tests := []struct {
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desc string
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area image.Rectangle
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ratio image.Point
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want image.Rectangle
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}{
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{
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desc: "area is zero",
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area: image.ZR,
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ratio: image.Point{1, 1},
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want: image.ZR,
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},
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{
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desc: "ratio is zero",
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area: image.Rect(0, 0, 1, 1),
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ratio: image.ZP,
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want: image.ZR,
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},
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{
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desc: "there is no smaller area in the ratio",
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area: image.Rect(0, 0, 1, 1),
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ratio: image.Point{1, 2},
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want: image.ZR,
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},
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{
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desc: "already has the target ratio",
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area: image.Rect(0, 0, 10, 5),
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ratio: image.Point{2, 1},
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want: image.Rect(0, 0, 10, 5),
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},
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{
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desc: "scales to closest height",
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area: image.Rect(0, 0, 50, 25), // Ratio 2:1.
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ratio: image.Point{3, 1},
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want: image.Rect(0, 0, 48, 16),
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},
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{
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desc: "scales to closest width of a non-zero base area",
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area: image.Rect(1, 2, 21, 62), // Ratio 2:3.
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ratio: image.Point{3, 1},
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want: image.Rect(1, 2, 19, 8),
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},
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{
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desc: "scales to closest height",
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area: image.Rect(0, 0, 50, 25), // Ratio 2:1.
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ratio: image.Point{1, 3},
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want: image.Rect(0, 0, 8, 24),
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},
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{
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desc: "scales to closest height of a non-zero base area",
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area: image.Rect(2, 4, 7, 29), // Ratio 1:5.
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ratio: image.Point{3, 2},
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want: image.Rect(2, 4, 5, 6),
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},
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{
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desc: "non-simplified ratio",
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area: image.Rect(0, 0, 50, 25), // Ratio 2:1.
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ratio: image.Point{300, 100}, // Ratio 3:1.
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want: image.Rect(0, 0, 48, 16),
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},
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{
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desc: "square ratio",
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area: image.Rect(0, 0, 50, 25), // Ratio 2:1.
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ratio: image.Point{1, 1}, // Ratio 3:1.
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want: image.Rect(0, 0, 25, 25),
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},
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}
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for _, tc := range tests {
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t.Run(tc.desc, func(t *testing.T) {
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got := WithRatio(tc.area, tc.ratio)
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if diff := pretty.Compare(tc.want, got); diff != "" {
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t.Errorf("WithRatio => unexpected diff (-want, +got):\n%s", diff)
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}
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})
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}
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}
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