mentat/query-algebrizer/tests/predicate.rs

211 lines
6.4 KiB
Rust

// Copyright 2016 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
extern crate core_traits;
extern crate edn;
extern crate mentat_core;
extern crate mentat_query_algebrizer;
extern crate query_algebrizer_traits;
mod utils;
use core_traits::{Attribute, TypedValue, ValueType, ValueTypeSet};
use mentat_core::{DateTime, Schema, Utc};
use edn::query::{Keyword, PlainSymbol, Variable};
use query_algebrizer_traits::errors::AlgebrizerError;
use mentat_query_algebrizer::{EmptyBecause, Known, QueryInputs};
use crate::utils::{add_attribute, alg, alg_with_inputs, associate_ident, bails};
fn prepopulated_schema() -> Schema {
let mut schema = Schema::default();
associate_ident(&mut schema, Keyword::namespaced("foo", "date"), 65);
associate_ident(&mut schema, Keyword::namespaced("foo", "double"), 66);
associate_ident(&mut schema, Keyword::namespaced("foo", "long"), 67);
add_attribute(
&mut schema,
65,
Attribute {
value_type: ValueType::Instant,
multival: false,
..Default::default()
},
);
add_attribute(
&mut schema,
66,
Attribute {
value_type: ValueType::Double,
multival: false,
..Default::default()
},
);
add_attribute(
&mut schema,
67,
Attribute {
value_type: ValueType::Long,
multival: false,
..Default::default()
},
);
schema
}
#[test]
fn test_instant_predicates_require_instants() {
let schema = prepopulated_schema();
let known = Known::for_schema(&schema);
// You can't use a string for an inequality: this is a straight-up error.
let query = r#"[:find ?e
:where
[?e :foo/date ?t]
[(> ?t "2017-06-16T00:56:41.257Z")]]"#;
assert_eq!(
bails(known, query),
AlgebrizerError::InvalidArgumentType(
PlainSymbol::plain(">"),
ValueTypeSet::of_numeric_and_instant_types(),
1
)
);
let query = r#"[:find ?e
:where
[?e :foo/date ?t]
[(> "2017-06-16T00:56:41.257Z", ?t)]]"#;
assert_eq!(
bails(known, query),
AlgebrizerError::InvalidArgumentType(
PlainSymbol::plain(">"),
ValueTypeSet::of_numeric_and_instant_types(),
0
)
); // We get this right.
// You can try using a number, which is valid input to a numeric predicate.
// In this store and query, though, that means we expect `?t` to be both
// an instant and a number, so the query is known-empty.
let query = r#"[:find ?e
:where
[?e :foo/date ?t]
[(> ?t 1234512345)]]"#;
let cc = alg(known, query);
assert!(cc.is_known_empty());
assert_eq!(
cc.empty_because.unwrap(),
EmptyBecause::TypeMismatch {
var: Variable::from_valid_name("?t"),
existing: ValueTypeSet::of_one(ValueType::Instant),
desired: ValueTypeSet::of_numeric_types(),
}
);
// You can compare doubles to longs.
let query = r#"[:find ?e
:where
[?e :foo/double ?t]
[(< ?t 1234512345)]]"#;
let cc = alg(known, query);
assert!(!cc.is_known_empty());
assert_eq!(
cc.known_type(&Variable::from_valid_name("?t"))
.expect("?t is known"),
ValueType::Double
);
}
#[test]
fn test_instant_predicates_accepts_var() {
let schema = prepopulated_schema();
let known = Known::for_schema(&schema);
let instant_var = Variable::from_valid_name("?time");
let instant_value = TypedValue::Instant(
DateTime::parse_from_rfc3339("2018-04-11T19:17:00.000Z")
.map(|t| t.with_timezone(&Utc))
.expect("expected valid date"),
);
let query = r#"[:find ?e
:in ?time
:where
[?e :foo/date ?t]
[(< ?t ?time)]]"#;
let cc = alg_with_inputs(
known,
query,
QueryInputs::with_value_sequence(vec![(instant_var.clone(), instant_value.clone())]),
);
assert_eq!(
cc.known_type(&instant_var).expect("?time is known"),
ValueType::Instant
);
let query = r#"[:find ?e
:in ?time
:where
[?e :foo/date ?t]
[(> ?time, ?t)]]"#;
let cc = alg_with_inputs(
known,
query,
QueryInputs::with_value_sequence(vec![(instant_var.clone(), instant_value)]),
);
assert_eq!(
cc.known_type(&instant_var).expect("?time is known"),
ValueType::Instant
);
}
#[test]
fn test_numeric_predicates_accepts_var() {
let schema = prepopulated_schema();
let known = Known::for_schema(&schema);
let numeric_var = Variable::from_valid_name("?long");
let numeric_value = TypedValue::Long(1234567);
// You can't use a string for an inequality: this is a straight-up error.
let query = r#"[:find ?e
:in ?long
:where
[?e :foo/long ?t]
[(> ?t ?long)]]"#;
let cc = alg_with_inputs(
known,
query,
QueryInputs::with_value_sequence(vec![(numeric_var.clone(), numeric_value.clone())]),
);
assert_eq!(
cc.known_type(&numeric_var).expect("?long is known"),
ValueType::Long
);
let query = r#"[:find ?e
:in ?long
:where
[?e :foo/long ?t]
[(> ?long, ?t)]]"#;
let cc = alg_with_inputs(
known,
query,
QueryInputs::with_value_sequence(vec![(numeric_var.clone(), numeric_value)]),
);
assert_eq!(
cc.known_type(&numeric_var).expect("?long is known"),
ValueType::Long
);
}