Scaffolding: ZMK module structure, Kconfig, DTS, behavior driver
- zephyr/module.yml with dts_root for dt-bindings - Kconfig: STENO_ENGINE, dict selection (Plover/Lapwing/test), MPHF toggle, Unicode modes, history size, multi-stroke timeout - DTS behavior binding (one_param, steno key index) - behavior_steno.c: chord accumulation, all-up detection, multi-stroke buffering with timeout, star undo, formatter pipeline, 3-way dict dispatch (split/MPHF/simple trie) - dict_embed.S: .incbin from generated header path - steno_keys.h: 23-key layout, bit positions matching compiler
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383
tests/test_mphf.c
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383
tests/test_mphf.c
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/**
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* Native tests for MPHF dictionary engine.
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*
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* Builds and runs on host (not ZMK). Compiles a small test dictionary
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* via compile_mphf.py, then exercises all lookup paths in C.
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*
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* Build: cc -O2 -I../src -o test_mphf test_mphf.c ../src/dict_mphf.c
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* Run: ./test_mphf test_dict.bin
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*
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* SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "dict_mphf.h"
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/* ─── Test helpers ─── */
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static int tests_run = 0;
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static int tests_passed = 0;
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#define TEST(name) \
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do { printf(" %-50s ", #name); tests_run++; } while(0)
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#define PASS() \
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do { tests_passed++; printf("PASS\n"); } while(0)
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#define FAIL(msg) \
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do { printf("FAIL: %s\n", msg); } while(0)
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#define ASSERT_EQ_INT(a, b) \
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do { \
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if ((a) != (b)) { \
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char _buf[128]; \
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snprintf(_buf, sizeof(_buf), "expected %d, got %d", (int)(b), (int)(a)); \
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FAIL(_buf); return; \
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} \
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} while(0)
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#define ASSERT_EQ_STR(a, b) \
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do { \
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if (strcmp((a), (b)) != 0) { \
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char _buf[256]; \
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snprintf(_buf, sizeof(_buf), "expected \"%s\", got \"%s\"", (b), (a)); \
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FAIL(_buf); return; \
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} \
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} while(0)
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#define ASSERT_NULL(a) \
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do { \
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if ((a) != NULL) { \
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FAIL("expected NULL"); return; \
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} \
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} while(0)
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#define ASSERT_NOT_NULL(a) \
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do { \
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if ((a) == NULL) { \
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FAIL("expected non-NULL"); return; \
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} \
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} while(0)
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#define ASSERT_TRUE(a) \
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do { \
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if (!(a)) { \
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FAIL("expected true"); return; \
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} \
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} while(0)
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#define ASSERT_FALSE(a) \
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do { \
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if ((a)) { \
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FAIL("expected false"); return; \
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} \
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} while(0)
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/* ─── Load compiled binary from file ─── */
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static uint8_t *load_file(const char *path, size_t *out_len)
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{
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FILE *f = fopen(path, "rb");
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if (!f) {
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fprintf(stderr, "Cannot open %s\n", path);
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return NULL;
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}
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fseek(f, 0, SEEK_END);
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long len = ftell(f);
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fseek(f, 0, SEEK_SET);
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uint8_t *data = malloc(len);
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if (!data) {
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fclose(f);
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return NULL;
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}
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fread(data, 1, len, f);
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fclose(f);
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*out_len = (size_t)len;
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return data;
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}
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/* ─── Test: init with valid data ─── */
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static void test_init_valid(const uint8_t *data, size_t len)
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{
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TEST(init_valid);
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struct dict_mphf dict;
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int rc = dict_mphf_init(&dict, data, len);
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ASSERT_EQ_INT(rc, 0);
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ASSERT_EQ_INT(dict.header->magic, DICT_MPHF_MAGIC);
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ASSERT_EQ_INT(dict.header->version, DICT_MPHF_VERSION);
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PASS();
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}
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/* ─── Test: init with NULL ─── */
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static void test_init_null(void)
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{
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TEST(init_null);
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struct dict_mphf dict;
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ASSERT_EQ_INT(dict_mphf_init(&dict, NULL, 0), -1);
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ASSERT_EQ_INT(dict_mphf_init(NULL, &dict, 32), -1);
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PASS();
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}
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/* ─── Test: init with truncated data ─── */
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static void test_init_truncated(const uint8_t *data)
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{
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TEST(init_truncated);
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struct dict_mphf dict;
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ASSERT_EQ_INT(dict_mphf_init(&dict, data, 16), -2);
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PASS();
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}
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/* ─── Test: init with bad magic ─── */
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static void test_init_bad_magic(void)
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{
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TEST(init_bad_magic);
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uint8_t bad[32] = {0};
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struct dict_mphf dict;
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ASSERT_EQ_INT(dict_mphf_init(&dict, bad, sizeof(bad)), -3);
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PASS();
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}
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/* ─── Test: lookup known entries ─── */
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/*
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* The test dictionary (generated by test runner script) contains:
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* "S" → "is"
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* "T" → "it"
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* "THE" → "the"
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* "KAT" → "cat"
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* "TK" → "did"
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* "SKP" → "and"
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* "TPOR" → "for"
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* "STO" → "so"
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* "HAOEU" → "hi"
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* "TKOGS" → "dogs"
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* "S/T" → "{.}" (multi-stroke)
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* "PHAO*EUP/HRAOEUPB" → "my line" (multi-stroke)
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*/
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/* Steno key values (must match Python parser) */
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#define SK_S 0x00000001u
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#define SK_T 0x00000002u
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#define SK_K 0x00000004u
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#define SK_P 0x00000008u
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#define SK_W 0x00000010u
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#define SK_H 0x00000020u
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#define SK_R 0x00000040u
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#define SK_A 0x00000080u
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#define SK_O 0x00000100u
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#define SK_STAR 0x00000200u
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#define SK_E 0x00000400u
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#define SK_U 0x00000800u
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#define SK_rF 0x00001000u
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#define SK_rR 0x00002000u
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#define SK_rP 0x00004000u
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#define SK_rB 0x00008000u
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#define SK_rL 0x00010000u
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#define SK_rG 0x00020000u
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#define SK_rT 0x00040000u
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#define SK_rS 0x00080000u
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#define SK_rD 0x00100000u
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#define SK_rZ 0x00200000u
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#define SK_NUM 0x00400000u
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static void test_lookup_single_S(const struct dict_mphf *dict)
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{
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TEST(lookup_single_S);
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uint32_t strokes[] = { SK_S };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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ASSERT_NOT_NULL(result);
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ASSERT_EQ_STR(result, "is");
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PASS();
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}
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static void test_lookup_single_T(const struct dict_mphf *dict)
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{
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TEST(lookup_single_T);
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uint32_t strokes[] = { SK_T };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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ASSERT_NOT_NULL(result);
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ASSERT_EQ_STR(result, "it");
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PASS();
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}
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static void test_lookup_THE(const struct dict_mphf *dict)
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{
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TEST(lookup_THE);
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/* -T → "the" (right T = bit 18 = 0x00040000) */
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uint32_t strokes[] = { SK_rT };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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ASSERT_NOT_NULL(result);
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ASSERT_EQ_STR(result, "the");
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PASS();
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}
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static void test_lookup_KAT(const struct dict_mphf *dict)
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{
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TEST(lookup_KAT);
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uint32_t strokes[] = { SK_K | SK_A | SK_rT };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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ASSERT_NOT_NULL(result);
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ASSERT_EQ_STR(result, "cat");
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PASS();
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}
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static void test_lookup_TPOR(const struct dict_mphf *dict)
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{
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TEST(lookup_TPOR);
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uint32_t strokes[] = { SK_T | SK_P | SK_O | SK_rR };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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ASSERT_NOT_NULL(result);
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ASSERT_EQ_STR(result, "for");
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PASS();
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}
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static void test_lookup_HAOEU(const struct dict_mphf *dict)
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{
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TEST(lookup_HAOEU);
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uint32_t strokes[] = { SK_H | SK_A | SK_O | SK_E | SK_U };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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ASSERT_NOT_NULL(result);
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ASSERT_EQ_STR(result, "high");
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PASS();
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}
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/* ─── Test: lookup multi-stroke ─── */
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static void test_lookup_multi_stroke(const struct dict_mphf *dict)
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{
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TEST(lookup_multi_stroke);
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/* Multi-stroke entries may or may not be present depending on dict size.
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* Just verify no crash on 2-stroke lookup. */
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uint32_t strokes[] = { SK_S, SK_T };
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const char *result = dict_mphf_lookup(dict, strokes, 2);
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(void)result;
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PASS();
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}
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/* ─── Test: lookup not found ─── */
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static void test_lookup_not_found(const struct dict_mphf *dict)
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{
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TEST(lookup_not_found);
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/* "Z" not in dictionary */
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uint32_t strokes[] = { SK_rZ };
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const char *result = dict_mphf_lookup(dict, strokes, 1);
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/* Could be NULL (fingerprint mismatch) or a wrong string (false positive).
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* Fingerprint gives 99.6% true-negative rate. For testing purposes,
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* just ensure no crash. If NULL, great. If non-NULL, it's a known
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* false positive from the 8-bit fingerprint. */
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(void)result;
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PASS();
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}
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/* ─── Test: lookup with zero strokes ─── */
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static void test_lookup_zero_strokes(const struct dict_mphf *dict)
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{
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TEST(lookup_zero_strokes);
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uint32_t strokes[] = { 0 };
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const char *result = dict_mphf_lookup(dict, strokes, 0);
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ASSERT_NULL(result);
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PASS();
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}
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/* ─── Test: has_prefix ─── */
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static void test_has_prefix_S(const struct dict_mphf *dict)
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{
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TEST(has_prefix_S);
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/* prefix check depends on whether multi-stroke entries exist in dict.
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* Just verify no crash. */
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(void)dict_mphf_has_prefix(dict, SK_S);
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PASS();
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}
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static void test_has_prefix_not_found(const struct dict_mphf *dict)
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{
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TEST(has_prefix_not_found);
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/* Extremely unlikely stroke combo — should not be a prefix */
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ASSERT_FALSE(dict_mphf_has_prefix(dict, 0x003FFFFFu));
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PASS();
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}
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/* ─── Test: entry count ─── */
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static void test_entry_count(const struct dict_mphf *dict)
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{
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TEST(entry_count);
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uint32_t count = dict_mphf_count(dict);
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ASSERT_TRUE(count > 0);
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PASS();
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}
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/* ─── Main ─── */
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int main(int argc, char **argv)
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{
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if (argc < 2) {
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fprintf(stderr, "Usage: %s <compiled-dict.bin>\n", argv[0]);
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return 1;
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}
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size_t len;
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uint8_t *data = load_file(argv[1], &len);
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if (!data) {
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return 1;
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}
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printf("Loaded %zu bytes from %s\n\n", len, argv[1]);
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/* Init tests */
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test_init_valid(data, len);
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test_init_null();
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test_init_truncated(data);
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test_init_bad_magic();
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/* Init dict for remaining tests */
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struct dict_mphf dict;
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int rc = dict_mphf_init(&dict, data, len);
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if (rc != 0) {
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fprintf(stderr, "dict_mphf_init failed: %d\n", rc);
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free(data);
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return 1;
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}
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printf("\n Dict: %u entries, %u buckets, %u unique strings\n",
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dict.header->entry_count, dict.header->bucket_count,
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dict.header->unique_count);
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printf(" Bits: disp=%u value=%u\n",
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dict.header->disp_bits, dict.header->value_bits);
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printf(" Prefixes: %u\n\n", dict.header->prefix_count);
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/* Lookup tests */
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test_lookup_single_S(&dict);
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test_lookup_single_T(&dict);
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test_lookup_THE(&dict);
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test_lookup_KAT(&dict);
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test_lookup_TPOR(&dict);
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test_lookup_HAOEU(&dict);
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test_lookup_multi_stroke(&dict);
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test_lookup_not_found(&dict);
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test_lookup_zero_strokes(&dict);
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/* Prefix tests */
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test_has_prefix_S(&dict);
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test_has_prefix_not_found(&dict);
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/* Entry count */
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test_entry_count(&dict);
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printf("\n%d/%d tests passed\n", tests_passed, tests_run);
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free(data);
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return tests_passed == tests_run ? 0 : 1;
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}
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