1 files changed, 9 insertions, 0 deletions
diff --git a/src/ninep/testing.zig b/src/ninep/testing.zig
index fce77f10..927552e2 100644
--- a/src/ninep/testing.zig
+++ b/src/ninep/testing.zig
@@ -56,6 +56,15 @@ pub fn rd(p: *Pardes, node: u64, off: u64, size: u32) Answer {
     return call(p, .{ .tag = 1, .op = .read, .node = node, .off = off, .size = size });
 }
 
+/// Whether the log, read whole from a fresh open, holds `needle`.
+pub fn logHas(p: *Pardes, needle: []const u8) bool {
+    const log = @intFromEnum(tree.TopFile.log);
+    const h = call(p, .{ .tag = 1, .op = .open, .node = log }).reply.handle;
+    defer _ = call(p, .{ .tag = 3, .op = .release, .node = log, .handle = h });
+    const text = call(p, .{ .tag = 2, .op = .read, .node = log, .handle = h, .size = 1 << 16 }).bytes;
+    return std.mem.indexOf(u8, text, needle) != null;
+}
+
 pub fn wr(p: *Pardes, node: u64, data: []const u8) Answer {
     return call(p, .{ .tag = 2, .op = .write, .node = node, .data = data });
 }