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records.re
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records.re
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open Grain_tests.TestFramework;
open Grain_tests.Runner;
open Grain_utils;
let {describe} =
describeConfig |> withCustomMatchers(customMatchers) |> build;
describe("records", ({test, testSkip}) => {
let test_or_skip =
Sys.backend_type == Other("js_of_ocaml") ? testSkip : test;
let assertSnapshot = makeSnapshotRunner(test);
let assertCompileError = makeCompileErrorRunner(test);
let assertRun = makeRunner(test_or_skip);
let assertWarning = makeWarningRunner(test);
let assertNoWarning = makeNoWarningRunner(test);
assertRun(
"record_1",
"record Rec {foo: Number}; print({foo: 4})",
"{\n foo: 4\n}\n",
);
assertRun(
"record_2",
"provide record Rec {foo: Number}; print({foo: 4})",
"{\n foo: 4\n}\n",
);
assertRun(
"record_multiple",
"provide record Rec {foo: Number, bar: String, baz: Bool}; print({foo: 4, bar: \"boo\", baz: true})",
"{\n foo: 4,\n bar: \"boo\",\n baz: true\n}\n",
);
assertSnapshot(
"record_pun",
"provide record Rec {foo: Number}; let foo = 4; {foo,}",
);
assertSnapshot(
"record_pun_multiple",
"provide record Rec {foo: Number, bar: Bool}; let foo = 4; let bar = false; {foo, bar}",
);
assertSnapshot(
"record_pun_mixed",
"provide record Rec {foo: Number, bar: Bool}; let foo = 4; {foo, bar: false}",
);
assertSnapshot(
"record_pun_mixed_2",
"provide record Rec {foo: Number, bar: Bool}; let bar = false; {foo: 4, bar}",
);
assertCompileError("record_err_1", "{foo: 4}", "Unbound record label foo");
assertCompileError(
"record_err_2",
"record Rec {foo: Number}; {foo: 4, bar: 4}",
"Unbound record label bar",
);
assertCompileError(
"record_err_3",
"let foo = \"\"; foo.charAt(0)",
"Unbound record label charAt",
);
assertRun(
"record_get_1",
"record Rec {foo: Number}; let bar = {foo: 4}; print(bar.foo)",
"4\n",
);
assertSnapshot("record_get_2", "record Rec {foo: Number}; {foo: 4}.foo");
assertSnapshot(
"record_get_multiple",
"record Rec {foo: Number, bar: Number}; let x = {foo: 4, bar: 9}; x.foo + x.bar",
);
assertSnapshot(
"record_get_multilevel",
"record Rec1 {foo: Number, bar: Number}; record Rec2 {baz: Rec1}; let x = {baz: {foo: 4, bar: 9}}; x.baz.bar",
);
assertCompileError(
"record_get_err",
"record Rec1 {foo: Number, bar: Number}; let x = {foo: 4, bar: 9}; x.baz",
"The field baz does not belong to type Rec1",
);
/* mutable record fields */
assertRun(
"record_mut_1",
"record Rec {foo: Number, mut bar: String, baz: Bool}; let a = {foo: 4, bar: \"boo\", baz: true}; a.bar = \"hoo\"; print(a.bar)",
"hoo\n",
);
assertRun(
"record_mut_2",
"record Rec {mut foo: Number, bar: String, baz: Bool}; let a = {foo: 4, bar: \"boo\", baz: true}; a.foo += 5; print(a.foo)",
"9\n",
);
assertCompileError(
"record_mut_3",
"record Rec {foo: Number, mut bar: String, baz: Bool}; let a = {foo: 4, bar: \"boo\", baz: true}; a.foo = 5; a.foo",
"The record field foo is not mutable",
);
/* record destructured assignment */
assertSnapshot(
"record_destruct_1",
"record Rec {foo: Number, bar: String, baz: Bool}; let { foo, _ } = {foo: 4, bar: \"boo\", baz: true}; foo",
);
assertSnapshot(
"record_destruct_2",
"record Rec {foo: Number, bar: String, baz: Bool}; let { bar, _ } = {foo: 4, bar: \"boo\", baz: true}; bar",
);
assertSnapshot(
"record_destruct_3",
"record Rec {foo: Number, bar: Number, baz: Number}; let { foo, bar, _ } = {foo: 4, bar: 5, baz: 6}; foo + bar",
);
assertSnapshot(
"record_destruct_4",
"record Rec {foo: Number, bar: Number, baz: Number}; let { foo, bar, baz } = {foo: 4, bar: 5, baz: 6}; foo + bar + baz",
);
assertSnapshot(
"record_destruct_trailing",
"record Rec {foo: Number, bar: Number, baz: Number}; let { foo, bar, baz, } = {foo: 4, bar: 5, baz: 6}; foo + bar + baz",
);
assertSnapshot(
"record_destruct_deep",
"record Rec {foo: Number}; record Rec2 {bar: Rec}; let { bar: { foo } } = {bar: {foo: 4}}; foo",
);
assertCompileError(
"record_destruct_deep_alias",
"record Rec {foo: Number}; record Rec2 {bar: Rec}; let { bar: { foo } } = {bar: {foo: 4}}; bar",
"Unbound value bar",
);
// Record trailing commas
assertSnapshot(
"record_definition_trailing",
"provide record Rec {foo: Number,}; {foo: 4}",
);
assertSnapshot(
"record_value_trailing",
"provide record Rec {foo: Number}; {foo: 4,}",
);
assertSnapshot(
"record_both_trailing",
"provide record Rec {foo: Number,}; {foo: 4,}",
);
assertSnapshot(
"record_multiple_fields_definition_trailing",
"provide record Rec {foo: Number, bar: String, baz: Bool,}; {foo: 4, bar: \"boo\", baz: true}",
);
assertSnapshot(
"record_multiple_fields_value_trailing",
"provide record Rec {foo: Number, bar: String, baz: Bool}; {foo: 4, bar: \"boo\", baz: true,}",
);
assertSnapshot(
"record_multiple_fields_both_trailing",
"provide record Rec {foo: Number, bar: String, baz: Bool,}; {foo: 4, bar: \"boo\", baz: true,}",
);
assertSnapshot(
"record_pun_trailing",
"provide record Rec {foo: Number}; let foo = 4; {foo,}",
);
assertSnapshot(
"record_pun_multiple_trailing",
"provide record Rec {foo: Number, bar: Bool}; let foo = 4; let bar = false; {foo, bar,}",
);
assertSnapshot(
"record_pun_mixed_trailing",
"provide record Rec {foo: Number, bar: Bool}; let foo = 4; {foo, bar: false,}",
);
assertSnapshot(
"record_pun_mixed_2_trailing",
"provide record Rec {foo: Number, bar: Bool}; let bar = false; {foo: 4, bar,}",
);
assertSnapshot(
"record_recursive_data_definition",
{|
record rec Bar {
mut foo: Option<Foo>
}
and record Foo {
mut bar: Option<Bar>
}
let foo = {bar: None,}
let bar = {foo: None,}
foo.bar = Some(bar)
bar.foo = Some(foo)
|},
);
assertRun(
"export_import_record_issue_665",
{|
from "data" include Data
use Data.{ type Foo }
provide enum Bar { Baz(Foo<Number>) }
print(Baz({ bar: 1 }))
|},
"Baz({\n bar: 1\n})\n",
);
// record spread
assertRun(
"record_spread_1",
"record Rec {foo: Number, bar: Number, mut baz: Number}; let a = {foo: 1, bar: 2, baz: 3}; let b = {...a, bar: 3}; b.baz = 5; print(b); print(a)",
"{\n foo: 1,\n bar: 3,\n baz: 5\n}\n{\n foo: 1,\n bar: 2,\n baz: 3\n}\n",
);
assertSnapshot(
"record_spread_2",
"record Rec {foo: Number, bar: Number}; let a = {foo: 1, bar: 2}; let b = {...a, bar: 3}",
);
assertCompileError(
"record_spread_3",
"record Rec {foo: Number, bar: Number}; let a = {foo: 1, bar: 2}; let b = {bar: 3, ...a}",
"A record spread can only appear at the beginning of a record expression",
);
assertCompileError(
"record_spread_4",
"record Rec {foo: Number, bar: Number}; let a = {foo: 1, bar: 2}; let b = {...a, ...a}",
"A record expression may only contain one record spread",
);
assertCompileError(
"record_spread_5",
"record Rec {foo: Number, bar: Number}; let a = {foo: 1, bar: 2}; let b = {...a}",
"Expected a comma followed by one or more record field overrides to complete the record expression",
);
assertCompileError(
"record_spread_6",
"record Rec {foo: Number, bar: Number}; let a = {foo: 1, bar: 2}; let b = {...a,}",
"Expected one or more record field overrides to complete the record expression",
);
assertCompileError(
"record_spread_7",
"record Rec {foo: Number, bar: Number}; record Rec2 {baz: Number}; let a = {foo: 1, bar: 2}; let b = {...a, baz: 3}",
"The field baz does not belong to type Rec",
);
assertWarning(
"record_spread_8",
"record Rec {foo: Number, bar: Number}; let a = {foo: 1, bar: 2}; let b = {...a, foo: 2, bar: 3}",
Warnings.UselessRecordSpread,
);
assertWarning(
"disambiguation_1",
{|
record A { field: Number }
record B { field: Number }
x => x.field
|},
Warnings.AmbiguousName(["field"], ["B", "A"], false),
);
assertNoWarning(
"disambiguation_2",
{|
record A { field: Number }
record B { field: Number }
(x: A) => x.field
|},
);
assertNoWarning(
"disambiguation_3",
{|
record A { field: Number }
record B { field: Number }
(x: B) => x.field
|},
);
});