42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package sparkline
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import (
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"os"
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"path/filepath"
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"strings"
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"testing"
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)
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func loadGolden(t *testing.T, name string) string {
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t.Helper()
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b, err := os.ReadFile(filepath.Join("testdata", name))
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if err != nil {
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t.Fatalf("read golden %s: %v", name, err)
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}
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return strings.TrimRight(string(b), "\n")
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}
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func TestSparkline_Empty(t *testing.T) {
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got := strings.TrimRight(string(RenderSparkline(nil, 80, 20)), "\n")
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want := loadGolden(t, "empty.svg")
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if got != want {
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t.Errorf("empty sparkline mismatch:\nwant:\n%s\ngot:\n%s", want, got)
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}
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}
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func TestSparkline_SinglePoint(t *testing.T) {
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got := strings.TrimRight(string(RenderSparkline([]float64{100}, 80, 20)), "\n")
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want := loadGolden(t, "single_point.svg")
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if got != want {
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t.Errorf("single_point sparkline mismatch:\nwant:\n%s\ngot:\n%s", want, got)
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}
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}
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func TestSparkline_ThreePoints(t *testing.T) {
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got := strings.TrimRight(string(RenderSparkline([]float64{10, 30, 20}, 80, 20)), "\n")
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want := loadGolden(t, "three_points.svg")
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if got != want {
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t.Errorf("three_points sparkline mismatch:\nwant:\n%s\ngot:\n%s", want, got)
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}
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}
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