1 files changed, 57 insertions, 0 deletions
diff --git a/vespalib/src/tests/directio/directio.cpp b/vespalib/src/tests/directio/directio.cpp
new file mode 100644
index 00000000000..77374f6f926
--- /dev/null
+++ b/vespalib/src/tests/directio/directio.cpp
@@ -0,0 +1,57 @@
+// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+
+#include <vespa/vespalib/testkit/test_kit.h>
+#include <vespa/vespalib/stllike/string.h>
+#include <vespa/vespalib/util/size_literals.h>
+#include <vespa/vespalib/data/databuffer.h>
+#include <vespa/fastos/file.h>
+
+using namespace vespalib;
+
+TEST("that DirectIOException propagates the correct information.") {
+    const char *msg("The buffer");
+    DirectIOException e("file.a", msg, 10, 3);
+    EXPECT_EQUAL(10u, e.getLength());
+    EXPECT_EQUAL(3u, e.getOffset());
+    EXPECT_EQUAL(msg, e.getBuffer());
+    EXPECT_EQUAL(0u, string(e.what()).find("DirectIO failed for file 'file.a' buffer="));
+    EXPECT_EQUAL(string("file.a"), e.getFileName());
+}
+
+TEST("that DirectIOException is thrown on unaligned buf.") {
+    FastOS_File f("vespalib_directio_test_app");
+    f.EnableDirectIO();
+    EXPECT_TRUE(f.OpenReadOnly());
+    DataBuffer buf(10000, 4_Ki);
+    bool caught(false);
+    try {
+        f.ReadBuf(buf.getFree()+1, 4_Ki, 0);
+    } catch (const DirectIOException & e) {
+        EXPECT_EQUAL(4_Ki, e.getLength());
+        EXPECT_EQUAL(0u, e.getOffset());
+        EXPECT_EQUAL(buf.getFree()+1, e.getBuffer());
+        EXPECT_EQUAL(string(f.GetFileName()), e.getFileName());
+        caught = true;
+    }
+    EXPECT_TRUE(caught);
+}
+
+TEST("that DirectIOException is thrown on unaligned offset.") {
+    FastOS_File f("vespalib_directio_test_app");
+    f.EnableDirectIO();
+    EXPECT_TRUE(f.OpenReadOnly());
+    DataBuffer buf(10000, 4_Ki);
+    bool caught(false);
+    try {
+        f.ReadBuf(buf.getFree(), 4_Ki, 1);
+    } catch (const DirectIOException & e) {
+        EXPECT_EQUAL(4_Ki, e.getLength());
+        EXPECT_EQUAL(1u, e.getOffset());
+        EXPECT_EQUAL(buf.getFree(), e.getBuffer());
+        EXPECT_EQUAL(string(f.GetFileName()), e.getFileName());
+        caught = true;
+    }
+    EXPECT_TRUE(caught);
+}
+
+TEST_MAIN() { TEST_RUN_ALL(); }