Add --data-dir option to test command

Understand using '-' on the command line to mean stdin

Fix last few unit tests that wanted to write to the filesystem; removes
outdata directory.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/tests/test_bigint.cpp b/src/tests/test_bigint.cpp
index 96ec035fe..5eaa0d0f1 100644
--- a/src/tests/test_bigint.cpp
+++ b/src/tests/test_bigint.cpp
@@ -147,7 +147,7 @@ BOTAN_REGISTER_TEST("bigint_unit", BigInt_Unit_Tests);
 class BigInt_KAT_Tests : public Text_Based_Test
    {
    public:
-      BigInt_KAT_Tests() : Text_Based_Test(Test::data_file("bigint.vec"),
+      BigInt_KAT_Tests() : Text_Based_Test("bigint.vec",
                                            std::vector<std::string>{"Output"},
                                            {"In1","In2","Input","Shift","Modulus","Value","Base","Exponent","IsPrime"})
          {}