feat(ui): add copy-last-40-lines button to log visualizer

2026-08-05 20:26:04 +02:00
parent bdee731376
commit 8c251c78b1
5 changed files with 147 additions and 4 deletions
@@ -85,4 +85,95 @@ public class LogVisualizerViewModelTests

        Assert.Equal(new[] { "newest", "middle", "oldest" }, vm.Rows.Select(r => r.Message));
    }
+
+    [Fact]
+    public async Task CopyLast_orders_chronologically_oldest_first()
+    {
+        var t0 = new DateTime(2026, 6, 23, 8, 0, 0, DateTimeKind.Utc);
+        var vm = new LogVisualizerViewModel(new FakeClient(new[]
+        {
+            E(WorkerLogLevel.Info, "oldest", t0),
+            E(WorkerLogLevel.Warn, "middle", t0.AddMinutes(1)),
+            E(WorkerLogLevel.Error, "newest", t0.AddMinutes(2)),
+        }));
+        await vm.RefreshAsync();
+
+        var text = vm.BuildCopyText();
+
+        var lines = text.Split('\n');
+        Assert.Equal(3, lines.Length);
+        Assert.EndsWith("INFO  oldest", lines[0]);
+        Assert.EndsWith("WARN  middle", lines[1]);
+        Assert.EndsWith("ERROR  newest", lines[2]);
+    }
+
+    [Fact]
+    public async Task CopyLast_caps_at_40_most_recent_entries()
+    {
+        var t0 = new DateTime(2026, 6, 23, 8, 0, 0, DateTimeKind.Utc);
+        var entries = Enumerable.Range(0, 50)
+            .Select(i => E(WorkerLogLevel.Info, $"line{i}", t0.AddMinutes(i)))
+            .ToArray();
+        var vm = new LogVisualizerViewModel(new FakeClient(entries));
+        await vm.RefreshAsync();
+
+        var lines = vm.BuildCopyText().Split('\n');
+
+        Assert.Equal(40, lines.Length);
+        Assert.EndsWith("line10", lines[0]);
+        Assert.EndsWith("line49", lines[^1]);
+    }
+
+    [Fact]
+    public async Task CopyLast_respects_active_warn_error_filter()
+    {
+        var t0 = new DateTime(2026, 6, 23, 8, 0, 0, DateTimeKind.Utc);
+        var vm = new LogVisualizerViewModel(new FakeClient(new[]
+        {
+            E(WorkerLogLevel.Info, "skipped", t0),
+            E(WorkerLogLevel.Warn, "kept", t0.AddMinutes(1)),
+        }));
+        await vm.RefreshAsync();
+        vm.WarnErrorOnly = true;
+
+        var lines = vm.BuildCopyText().Split('\n');
+
+        Assert.Single(lines);
+        Assert.EndsWith("WARN  kept", lines[0]);
+    }
+
+    [Fact]
+    public async Task CopyLastCommand_disabled_when_no_rows()
+    {
+        var vm = new LogVisualizerViewModel(new FakeClient(Array.Empty<WorkerLogEntry>()));
+        await vm.RefreshAsync();
+
+        Assert.False(vm.CopyLastCommand.CanExecute(null));
+    }
+
+    [Fact]
+    public async Task CopyLastCommand_copies_and_reports_count_on_success()
+    {
+        string? copied = null;
+        var vm = new LogVisualizerViewModel(new FakeClient(new[] { E(WorkerLogLevel.Info, "a") }),
+            text => { copied = text; return Task.FromResult(true); });
+        await vm.RefreshAsync();
+
+        await vm.CopyLastCommand.ExecuteAsync(null);
+
+        Assert.EndsWith("INFO  a", copied);
+        Assert.Contains("1", vm.StatusText);
+    }
+
+    [Fact]
+    public async Task CopyLastCommand_reports_failure_when_clipboard_unavailable()
+    {
+        var vm = new LogVisualizerViewModel(new FakeClient(new[] { E(WorkerLogLevel.Info, "a") }),
+            _ => Task.FromResult(false));
+        await vm.RefreshAsync();
+
+        await vm.CopyLastCommand.ExecuteAsync(null);
+
+        Assert.False(string.IsNullOrEmpty(vm.StatusText));
+    }
 }