1 files changed, 22 insertions, 0 deletions
diff --git a/lib/std/crypto/test.zig b/lib/std/crypto/test.zig
new file mode 100644
index 0000000000..a0ddad6c83
--- /dev/null
+++ b/lib/std/crypto/test.zig
@@ -0,0 +1,22 @@
+const std = @import("../std.zig");
+const testing = std.testing;
+const mem = std.mem;
+const fmt = std.fmt;
+
+// Hash using the specified hasher `H` asserting `expected == H(input)`.
+pub fn assertEqualHash(comptime Hasher: var, comptime expected: []const u8, input: []const u8) void {
+    var h: [expected.len / 2]u8 = undefined;
+    Hasher.hash(input, h[0..]);
+
+    assertEqual(expected, h);
+}
+
+// Assert `expected` == `input` where `input` is a bytestring.
+pub fn assertEqual(comptime expected: []const u8, input: []const u8) void {
+    var expected_bytes: [expected.len / 2]u8 = undefined;
+    for (expected_bytes) |*r, i| {
+        r.* = fmt.parseInt(u8, expected[2 * i .. 2 * i + 2], 16) catch unreachable;
+    }
+
+    testing.expectEqualSlices(u8, expected_bytes, input);
+}