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package showcase
import (
"path/filepath"
"strings"
"testing"
"time"
)
func TestMovementArrow(t *testing.T) {
t.Parallel()
tests := []struct {
name string
current int
older int
want string
}{
{name: "same spot", current: 3, older: 3, want: "→"},
{name: "improved", current: 2, older: 5, want: "↑"},
{name: "worse", current: 6, older: 4, want: "↓"},
{name: "missing older", current: 2, older: 0, want: "·"},
{name: "missing current", current: 0, older: 2, want: "·"},
}
for _, tc := range tests {
tc := tc
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
got := movementArrow(tc.current, tc.older)
if got != tc.want {
t.Fatalf("movementArrow(%d,%d) = %q, want %q", tc.current, tc.older, got, tc.want)
}
})
}
}
func TestComputeRepoHistory_LatestSnapshotAtOrBeforeAnchor(t *testing.T) {
t.Parallel()
store := &RankHistoryStore{
Version: rankHistoryVersion,
Snapshots: []RankSnapshot{
{Date: "2026-01-18", Ranks: map[string]int{"alpha": 4}},
{Date: "2026-02-01", Ranks: map[string]int{"alpha": 3}},
{Date: "2026-02-15", Ranks: map[string]int{"alpha": 2}},
{Date: "2026-02-22", Ranks: map[string]int{"alpha": 1}},
},
}
anchor, _ := time.Parse("2006-01-02", "2026-02-22")
history := computeRepoHistory(store, "alpha", anchor, 5)
wantSpots := []int{1, 2, 3, 3, 4}
if len(history) != len(wantSpots) {
t.Fatalf("history len = %d, want %d", len(history), len(wantSpots))
}
for i, want := range wantSpots {
if history[i].Spot != want {
t.Fatalf("history[%d].Spot = %d, want %d", i, history[i].Spot, want)
}
}
}
func TestComputeRepoHistory_UsesNAWhenNoRepoSpotAtAnchor(t *testing.T) {
t.Parallel()
store := &RankHistoryStore{
Version: rankHistoryVersion,
Snapshots: []RankSnapshot{
{Date: "2026-02-22", Ranks: map[string]int{"alpha": 1}},
{Date: "2026-02-15", Ranks: map[string]int{"beta": 3}},
},
}
anchor, _ := time.Parse("2006-01-02", "2026-02-22")
history := computeRepoHistory(store, "alpha", anchor, 2)
if history[0].Spot != 1 {
t.Fatalf("history[0].Spot = %d, want 1", history[0].Spot)
}
if history[1].Spot != 0 {
t.Fatalf("history[1].Spot = %d, want 0", history[1].Spot)
}
if history[1].Arrow != "·" {
t.Fatalf("history[1].Arrow = %q, want %q", history[1].Arrow, "·")
}
}
func TestUpsertSnapshotForDate_Idempotent(t *testing.T) {
t.Parallel()
store := newRankHistoryStore()
anchor, _ := time.Parse("2006-01-02", "2026-02-22")
upsertSnapshotForDate(store, anchor, map[string]int{"a": 1})
upsertSnapshotForDate(store, anchor, map[string]int{"a": 2, "b": 1})
if len(store.Snapshots) != 1 {
t.Fatalf("len(store.Snapshots) = %d, want 1", len(store.Snapshots))
}
if got := store.Snapshots[0].Ranks["a"]; got != 2 {
t.Fatalf("store.Snapshots[0].Ranks[\"a\"] = %d, want 2", got)
}
}
func TestRankHistoryReadWriteRoundTrip(t *testing.T) {
t.Parallel()
tmp := t.TempDir()
path := filepath.Join(tmp, rankHistoryFilename)
store := &RankHistoryStore{
Version: rankHistoryVersion,
Snapshots: []RankSnapshot{
{Date: "2026-02-22", Ranks: map[string]int{"alpha": 1}},
},
}
if err := saveRankHistory(path, store); err != nil {
t.Fatalf("saveRankHistory() error = %v", err)
}
got, err := loadRankHistory(path)
if err != nil {
t.Fatalf("loadRankHistory() error = %v", err)
}
if got.Version != rankHistoryVersion {
t.Fatalf("got.Version = %d, want %d", got.Version, rankHistoryVersion)
}
if len(got.Snapshots) != 1 {
t.Fatalf("len(got.Snapshots) = %d, want 1", len(got.Snapshots))
}
}
func TestFormatRankHistoryForHeader(t *testing.T) {
t.Parallel()
header := formatRankHistoryForHeader([]RepoRankHistory{
{Spot: 3, Anchor: "now"},
{Spot: 2, Anchor: "1w", Arrow: "↓"},
{Spot: 2, Anchor: "2w", Arrow: "→"},
{Spot: 0, Anchor: "3w", Arrow: "·"},
})
if !strings.Contains(header, "#3(now)") {
t.Fatalf("header missing current spot: %s", header)
}
if !strings.Contains(header, "↓#2(1w)") {
t.Fatalf("header missing down movement: %s", header)
}
if strings.Contains(header, "n/a") {
t.Fatalf("header should omit missing history points: %s", header)
}
}
|
