nushell/crates/nu-parser/tests/test_parser.rs
2021-09-05 01:25:31 +03:00

367 lines
12 KiB
Rust

use nu_parser::ParseError;
use nu_parser::*;
use nu_protocol::{
ast::{Expr, Expression, Pipeline, Statement},
engine::{EngineState, StateWorkingSet},
Signature, SyntaxShape,
};
#[test]
pub fn parse_int() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"3", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Int(3),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
pub fn parse_call() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").named("--jazz", SyntaxShape::Int, "jazz!!", Some('j'));
working_set.add_decl(sig.predeclare());
let (block, err) = parse_source(&mut working_set, b"foo", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert_eq!(expressions.len(), 1);
if let Expression {
expr: Expr::Call(call),
..
} = &expressions[0]
{
assert_eq!(call.decl_id, 0);
}
}
_ => panic!("not a call"),
}
}
#[test]
pub fn parse_call_missing_flag_arg() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").named("--jazz", SyntaxShape::Int, "jazz!!", Some('j'));
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo --jazz", true);
assert!(matches!(err, Some(ParseError::MissingFlagParam(..))));
}
#[test]
pub fn parse_call_missing_short_flag_arg() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").named("--jazz", SyntaxShape::Int, "jazz!!", Some('j'));
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo -j", true);
assert!(matches!(err, Some(ParseError::MissingFlagParam(..))));
}
#[test]
pub fn parse_call_too_many_shortflag_args() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo")
.named("--jazz", SyntaxShape::Int, "jazz!!", Some('j'))
.named("--math", SyntaxShape::Int, "math!!", Some('m'));
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo -mj", true);
assert!(matches!(
err,
Some(ParseError::ShortFlagBatchCantTakeArg(..))
));
}
#[test]
pub fn parse_call_unknown_shorthand() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").switch("--jazz", "jazz!!", Some('j'));
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo -mj", true);
assert!(matches!(err, Some(ParseError::UnknownFlag(..))));
}
#[test]
pub fn parse_call_extra_positional() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").switch("--jazz", "jazz!!", Some('j'));
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo -j 100", true);
assert!(matches!(err, Some(ParseError::ExtraPositional(..))));
}
#[test]
pub fn parse_call_missing_req_positional() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").required("jazz", SyntaxShape::Int, "jazz!!");
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo", true);
assert!(matches!(err, Some(ParseError::MissingPositional(..))));
}
#[test]
pub fn parse_call_missing_req_flag() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let sig = Signature::build("foo").required_named("--jazz", SyntaxShape::Int, "jazz!!", None);
working_set.add_decl(sig.predeclare());
let (_, err) = parse_source(&mut working_set, b"foo", true);
assert!(matches!(err, Some(ParseError::MissingRequiredFlag(..))));
}
mod range {
use super::*;
use nu_protocol::ast::{RangeInclusion, RangeOperator};
#[test]
fn parse_inclusive_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"0..10", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_exclusive_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"0..<10", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
Some(_),
RangeOperator {
inclusion: RangeInclusion::RightExclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_subexpression_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"(3 - 3)..<(8 + 2)", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
Some(_),
RangeOperator {
inclusion: RangeInclusion::RightExclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_variable_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"let a = 2; $a..10", true);
assert!(err.is_none());
assert!(block.len() == 2);
match &block[1] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_subexpression_variable_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"let a = 2; $a..<($a + 10)", true);
assert!(err.is_none());
assert!(block.len() == 2);
match &block[1] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
Some(_),
RangeOperator {
inclusion: RangeInclusion::RightExclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_left_unbounded_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"..10", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
None,
Some(_),
RangeOperator {
inclusion: RangeInclusion::Inclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
#[test]
fn parse_right_unbounded_range() {
let engine_state = EngineState::new();
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse_source(&mut working_set, b"0..", true);
assert!(err.is_none());
assert!(block.len() == 1);
match &block[0] {
Statement::Pipeline(Pipeline { expressions }) => {
assert!(expressions.len() == 1);
assert!(matches!(
expressions[0],
Expression {
expr: Expr::Range(
Some(_),
None,
RangeOperator {
inclusion: RangeInclusion::Inclusive,
..
}
),
..
}
))
}
_ => panic!("No match"),
}
}
}