Added integration tests.

integration-testing/Cargo.toml

@@ -30,7 +30,7 @@ publish = false
 logging = ["tracing-subscriber"]
 
 [dependencies]
-arrow2 = { path = "../", features = ["io_ipc", "io_json_integration"], default-features = false }
+arrow2 = { path = "../", features = ["io_ipc", "io_ipc_compression", "io_json_integration"], default-features = false }
 arrow-flight = { path = "../arrow-flight" }
 async-trait = "0.1.41"
 clap = "2.33"

integration-testing/unskip.patch

@@ -0,0 +1,46 @@
+diff --git a/dev/archery/archery/integration/datagen.py b/dev/archery/archery/integration/datagen.py
+index d0c4b3d6c..936351c80 100644
+--- a/dev/archery/archery/integration/datagen.py
++++ b/dev/archery/archery/integration/datagen.py
+@@ -1568,8 +1568,7 @@ def get_generated_json_files(tempdir=None):
+         .skip_category('Go')    # TODO(ARROW-7901)
+         .skip_category('JS'),   # TODO(ARROW-7900)
+
+-        generate_decimal128_case()
+-        .skip_category('Rust'),
++        generate_decimal128_case(),
+
+         generate_decimal256_case()
+         .skip_category('Go')  # TODO(ARROW-7948): Decimal + Go
+@@ -1579,13 +1578,11 @@ def get_generated_json_files(tempdir=None):
+         generate_datetime_case(),
+
+         generate_interval_case()
+-        .skip_category('JS')  # TODO(ARROW-5239): Intervals + JS
+-        .skip_category('Rust'),
++        .skip_category('JS'),  # TODO(ARROW-5239): Intervals + JS
+
+         generate_month_day_nano_interval_case()
+         .skip_category('Go')
+-        .skip_category('JS')
+-        .skip_category('Rust'),
++        .skip_category('JS'),
+
+
+         generate_map_case()
+@@ -1603,13 +1600,11 @@ def get_generated_json_files(tempdir=None):
+
+         generate_nested_large_offsets_case()
+         .skip_category('Go')
+-        .skip_category('JS')
+-        .skip_category('Rust'),
++        .skip_category('JS'),
+
+         generate_unions_case()
+         .skip_category('Go')
+-        .skip_category('JS')
+-        .skip_category('Rust'),
++        .skip_category('JS'),
+
+         generate_custom_metadata_case()
+         .skip_category('JS'),

src/ffi/schema.rs

@@ -323,6 +323,9 @@ fn to_format(data_type: &DataType) -> String {
         DataType::Duration(TimeUnit::Nanosecond) => "tDn".to_string(),
         DataType::Interval(IntervalUnit::YearMonth) => "tiM".to_string(),
         DataType::Interval(IntervalUnit::DayTime) => "tiD".to_string(),
+        DataType::Interval(IntervalUnit::MonthDayNano) => {
+            todo!("Spec for FFI for MonthDayNano still not defined.")
+        }
         DataType::Timestamp(unit, tz) => {
             let unit = match unit {
                 TimeUnit::Second => "s".to_string(),