1 files changed, 144 insertions, 0 deletions
diff --git a/subprojects/exess/test/test_long.c b/subprojects/exess/test/test_long.c
new file mode 100644
index 00000000..5631ca9f
--- /dev/null
+++ b/subprojects/exess/test/test_long.c
@@ -0,0 +1,144 @@
+/*
+  Copyright 2011-2021 David Robillard <d@drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#undef NDEBUG
+
+#include "exess/exess.h"
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+static void
+check_read(const char* const string,
+           const ExessStatus expected_status,
+           const int64_t     expected_value,
+           const size_t      expected_count)
+{
+  int64_t value = 0;
+
+  const ExessResult r = exess_read_long(&value, string);
+  assert(r.status == expected_status);
+  assert(r.count == expected_count);
+  assert(value == expected_value);
+}
+
+static void
+test_read_long(void)
+{
+  // No input
+  check_read("", EXESS_EXPECTED_DIGIT, 0, 0);
+  check_read(" \f\n\r\t\v", EXESS_EXPECTED_DIGIT, 0, 6);
+
+  // Canonical form
+  check_read("-1", EXESS_SUCCESS, -1, 2);
+  check_read("0", EXESS_SUCCESS, 0, 1);
+  check_read("1", EXESS_SUCCESS, 1, 1);
+  check_read("1234", EXESS_SUCCESS, 1234, 4);
+  check_read("-1234", EXESS_SUCCESS, -1234, 5);
+
+  // Non-canonical form
+  check_read(" \f\n\r\t\v1234 ", EXESS_SUCCESS, 1234, 10);
+  check_read(" \f\n\r\t\v-1234 ", EXESS_SUCCESS, -1234, 11);
+  check_read(" \f\n\r\t\v+1234 ", EXESS_SUCCESS, 1234, 11);
+  check_read(" \f\n\r\t\v01234 ", EXESS_SUCCESS, 1234, 11);
+  check_read(" \f\n\r\t\v-01234 ", EXESS_SUCCESS, -1234, 12);
+  check_read("-01", EXESS_SUCCESS, -1, 3);
+  check_read("-0", EXESS_SUCCESS, 0, 2);
+  check_read("-00", EXESS_SUCCESS, 0, 3);
+  check_read("00", EXESS_SUCCESS, 0, 2);
+  check_read("+0", EXESS_SUCCESS, 0, 2);
+  check_read("+00", EXESS_SUCCESS, 0, 3);
+  check_read("+1", EXESS_SUCCESS, 1, 2);
+  check_read("+01", EXESS_SUCCESS, 1, 3);
+  check_read("+1234", EXESS_SUCCESS, 1234, 5);
+  check_read("01234", EXESS_SUCCESS, 1234, 5);
+  check_read("-01234", EXESS_SUCCESS, -1234, 6);
+
+  // Limits
+  check_read(
+    "-9223372036854775808", EXESS_SUCCESS, INT64_MIN, EXESS_MAX_LONG_LENGTH);
+  check_read("9223372036854775807", EXESS_SUCCESS, INT64_MAX, 19);
+
+  // Out of range
+  check_read("-9223372036854775809", EXESS_OUT_OF_RANGE, 0, 20);
+  check_read("9223372036854775808", EXESS_OUT_OF_RANGE, 0, 19);
+  check_read("12345678901234567890", EXESS_OUT_OF_RANGE, 0, 20);
+
+  // Trailing garbage
+  check_read("1234extra", EXESS_EXPECTED_END, 1234, 4);
+
+  // Garbage
+  check_read("+", EXESS_EXPECTED_DIGIT, 0, 1);
+  check_read("-", EXESS_EXPECTED_DIGIT, 0, 1);
+  check_read("true", EXESS_EXPECTED_DIGIT, 0, 0);
+  check_read("false", EXESS_EXPECTED_DIGIT, 0, 0);
+  check_read("zero", EXESS_EXPECTED_DIGIT, 0, 0);
+  check_read("NaN", EXESS_EXPECTED_DIGIT, 0, 0);
+  check_read("INF", EXESS_EXPECTED_DIGIT, 0, 0);
+  check_read("-INF", EXESS_EXPECTED_DIGIT, 0, 1);
+}
+
+static void
+check_write(const int64_t     value,
+            const ExessStatus expected_status,
+            const size_t      buf_size,
+            const char* const expected_string)
+{
+  char buf[EXESS_MAX_LONG_LENGTH + 1] = {
+    1,  2,  3,  4,  5,  6,  7,  8,  9,  10, //
+    11, 12, 13, 14, 15, 16, 17, 18, 19, 20, //
+    21};
+
+  assert(buf_size <= sizeof(buf));
+
+  const ExessResult r = exess_write_long(value, buf_size, buf);
+  assert(!strcmp(buf, expected_string));
+  assert(r.status == expected_status);
+  assert(r.count == strlen(buf));
+  assert(r.status || exess_write_long(value, 0, NULL).count == r.count);
+}
+
+static void
+test_write_long(void)
+{
+  check_write(-1, EXESS_SUCCESS, 3, "-1");
+  check_write(0, EXESS_SUCCESS, 2, "0");
+  check_write(1, EXESS_SUCCESS, 2, "1");
+  check_write(INT64_MIN, EXESS_SUCCESS, 21, "-9223372036854775808");
+  check_write(INT64_MAX, EXESS_SUCCESS, 20, "9223372036854775807");
+
+  check_write(INT64_MIN, EXESS_NO_SPACE, 20, "");
+  check_write(INT64_MAX, EXESS_NO_SPACE, 19, "");
+  check_write(1234, EXESS_NO_SPACE, 4, "");
+  check_write(-1234, EXESS_NO_SPACE, 5, "");
+
+  // Check that nothing is written when there isn't enough space
+  char              c = 42;
+  const ExessResult r = exess_write_long(1234, 0, &c);
+  assert(c == 42);
+  assert(r.status == EXESS_NO_SPACE);
+  assert(r.count == 0);
+}
+
+int
+main(void)
+{
+  test_read_long();
+  test_write_long();
+  return 0;
+}