Adjust test name, and add zero length blob reading test for text

test/test_ion_binary.cpp

@@ -635,7 +635,7 @@ TEST(IonBinaryBlob, CanFullyReadBlobUsingPartialReads) {
 
 // Simple test to ensure that if we supply a buffer size of 0 to ion_reader_read_lob_bytes, we don't assert. If the user
 // is reading values via the LOB size, and does not specifically handle 0-lengthed LOBs the reader shouldn't fail.
-TEST(IonBinaryBlob, CanReadZeroLengthBlobWithLobLength) {
+TEST(IonBinaryBlob, CanReadZeroLength) {
     hREADER reader;
     ION_TYPE type;
     const char *buffer = "\xE0\x01\x00\xEA\xA0";

test/test_ion_text.cpp

@@ -657,6 +657,25 @@ TEST(IonTextBlob, CanReadBlob) {
                        tid_BLOB, 23, "This is a BLOB of text.");
 }
 
+TEST(IonTextBlob, CanReadZeroLength) {
+    hREADER reader;
+    ION_TYPE type;
+    const char *buffer = "{{}}";
+    char bytes[1]; // Shouldn't write any..
+
+    SIZE lob_size, bytes_read;
+    ION_ASSERT_OK(ion_reader_open_buffer(&reader, (BYTE*)buffer, 4, NULL));
+
+    ION_ASSERT_OK(ion_reader_next(reader, &type));
+    ASSERT_EQ(tid_BLOB, type);
+    ION_ASSERT_OK(ion_reader_get_lob_size(reader, &lob_size));
+    ASSERT_EQ(0, lob_size);
+    ION_ASSERT_OK(ion_reader_read_lob_bytes(reader, (BYTE*)bytes, lob_size, &bytes_read));
+    ASSERT_EQ(0, bytes_read);
+
+    ION_ASSERT_OK(ion_reader_close(reader));
+}
+
 void test_text_list(const char *ion_text) {
     ION_TYPE expected_tid = tid_LIST;