1 files changed, 57 insertions, 0 deletions
diff --git a/test/conversion_test.cpp b/test/conversion_test.cpp
new file mode 100644
index 0000000..3f1f959
--- /dev/null
+++ b/test/conversion_test.cpp
@@ -0,0 +1,57 @@
+#include <cybozu/test.hpp>
+#include "../src/conversion.hpp"
+
+CYBOZU_TEST_AUTO(arrayToDec)
+{
+	const struct {
+		uint32_t x[5];
+		size_t xn;
+		const char *s;
+	} tbl[] = {
+		{ { 0, 0, 0, 0, 0 }, 1, "0" },
+		{ { 9, 0, 0, 0, 0 }, 1, "9" },
+		{ { 123456789, 0, 0, 0, 0 }, 1, "123456789" },
+		{ { 2147483647, 0, 0, 0, 0 }, 1, "2147483647" },
+		{ { 0xffffffff, 0, 0, 0, 0 }, 1, "4294967295" },
+		{ { 0x540be400, 0x2, 0, 0, 0 }, 2, "10000000000" },
+		{ { 0xffffffff, 0xffffffff, 0, 0, 0 }, 2, "18446744073709551615" },
+		{ { 0x89e80001, 0x8ac72304, 0, 0, 0 }, 2, "10000000000000000001" },
+		{ { 0xc582ca00, 0x8ac72304, 0, 0, 0 }, 2, "10000000001000000000" },
+		{ { 0, 0, 1, 0, 0 }, 3, "18446744073709551616" },
+		{ { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0 }, 4, "340282366920938463463374607431768211455" },
+		{ { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff }, 5, "1461501637330902918203684832716283019655932542975" },
+		{ { 0x3b9aca00, 0x5e3f3700, 0x1cbfa532, 0x04f6433a, 0xd83ff078 }, 5, "1234567901234560000000000000000000000001000000000" },
+	};
+	for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
+		const size_t bufSize = 128;
+		char buf[bufSize] = {};
+		const char *str = tbl[i].s;
+		const uint32_t *x = tbl[i].x;
+		const size_t strLen = strlen(str);
+		size_t n = mcl::fp::arrayToDec(buf, bufSize, x, tbl[i].xn);
+		CYBOZU_TEST_EQUAL(n, strLen);
+		CYBOZU_TEST_EQUAL_ARRAY(buf + bufSize - n, str, n);
+		const size_t maxN = 32;
+		uint32_t xx[maxN] = {};
+		size_t xn = mcl::fp::convertDecToArray(xx, maxN, str, strLen);
+		CYBOZU_TEST_EQUAL(xn, tbl[i].xn);
+		CYBOZU_TEST_EQUAL_ARRAY(xx, x, xn);
+	}
+	for (size_t i = 0; i < CYBOZU_NUM_OF_ARRAY(tbl); i++) {
+		const size_t bufSize = 128;
+		char buf[bufSize] = {};
+		const char *str = tbl[i].s;
+		const size_t strLen = strlen(str);
+		uint64_t x[8] = {};
+		size_t xn = (tbl[i].xn + 1) / 2;
+		memcpy(x, tbl[i].x, tbl[i].xn * sizeof(uint32_t));
+		size_t n = mcl::fp::arrayToDec(buf, bufSize, x, xn);
+		CYBOZU_TEST_EQUAL(n, strLen);
+		CYBOZU_TEST_EQUAL_ARRAY(buf + bufSize - n, str, n);
+		const size_t maxN = 32;
+		uint64_t xx[maxN] = {};
+		size_t xxn = mcl::fp::convertDecToArray(xx, maxN, str, strLen);
+		CYBOZU_TEST_EQUAL(xxn, xn);
+		CYBOZU_TEST_EQUAL_ARRAY(xx, x, xn);
+	}
+}