Add test for reading vector columns

Author: simonrw

fitsio/tests/test_vector_datatypes.rs

@@ -110,3 +110,16 @@ make_test!(
     ColumnDataType::Double,
     3.1415926535879323
 );
+
+// integration test using file generated by `filegen/vector_columns.py`
+#[test]
+fn read_vector_data_from_example_file() {
+    let mut f = FitsFile::open("../testdata/vector_columns.fits").unwrap();
+    let table = f.hdu("info").unwrap();
+
+    let string_data: Vec<String> = table.read_col(&mut f, "target").unwrap();
+    assert_eq!(string_data, &["NGC1001", "NGC1002", "NGC1003"]);
+
+    let vector_data: Vec<i32> = table.read_col(&mut f, "index").unwrap();
+    assert_eq!(vector_data, &[1, 2, 3, 4, 5, 6]);
+}