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// Copyright (C) 2015 The Android Open Source Project
//
// 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 charts
import "testing"
func TestRound(t *testing.T) {
check := []struct {
value float64
expected int
}{
{-1.1, -1},
{-0.9, -1},
{-0.5, -1},
{-0.1, 0},
{0.1, 0},
{0.5, 0},
{0.9, 1},
{1.1, 1},
}
for _, v := range check {
got := round(v.value)
if got != v.expected {
t.Errorf("round(%v) returned unexpected value. Expected: %v, Got: %v", v.value, v.expected, got)
}
}
}
func TestFlooredPOT(t *testing.T) {
check := []struct {
value float64
expected int
}{
{0.5, 1},
{0, 1},
{1, 1},
{2, 2},
{3, 2},
{4, 4},
{5, 4},
}
for _, v := range check {
got := flooredPOT(v.value)
if got != v.expected {
t.Errorf("flooredPOT(%v) returned unexpected value. Expected: %v, Got: %v", v.value, v.expected, got)
}
}
}
func TestCalculateStepInterval(t *testing.T) {
check := []struct {
base, rng, cnt int
expected int
}{
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
// 2 4 6 8 10 12 14 16 18
// 4 8 12 16
// 8 16
// 16
{1, 18, 18, 1},
{1, 18, 9, 2},
{1, 18, 4, 4},
{1, 18, 2, 8},
{1, 18, 1, 16},
// 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54
// 6 12 18 24 30 36 42 48 54
// 12 24 36 48
// 24 48
// 48
{3, 54, 18, 3},
{3, 54, 9, 6},
{3, 54, 4, 12},
{3, 54, 2, 24},
{3, 54, 1, 48},
// 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
// 10 20 30 40 50 60 70 80 90
// 20 40 60 80
// 40 80
// 80
{5, 90, 18, 5},
{5, 90, 9, 10},
{5, 90, 4, 20},
{5, 90, 2, 40},
{5, 90, 1, 80},
}
for _, v := range check {
got := calculateStepInterval(v.base, v.rng, v.cnt)
if got != v.expected {
t.Errorf("calculateStepInterval(%v, %v, %v) returned unexpected value. Expected: %v, Got: %v", v.base, v.rng, v.cnt, v.expected, got)
}
}
}
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