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Add test which would fail if SFT behavior differs in variance checking #54756
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weswigham
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weswigham:add-test-while-fails-if-variance-sfc-behavior-differs
Jun 23, 2023
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39 changes: 39 additions & 0 deletions
39
tests/baselines/reference/varianceCantBeStrictWhileStructureIsnt.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| //// [tests/cases/compiler/varianceCantBeStrictWhileStructureIsnt.ts] //// | ||
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| //// [varianceCantBeStrictWhileStructureIsnt.ts] | ||
| // under non-strict-function-types, all the below should work | ||
| interface Foo<T> { | ||
| member: (cb: T) => void; | ||
| } | ||
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| interface Bar<T> { | ||
| member: (cb: T) => void; | ||
| } | ||
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| declare var a: Foo<string>; | ||
| declare var b: Foo<"">; | ||
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| declare var a2: Bar<string>; | ||
| declare var b2: Bar<"">; | ||
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| a = b; | ||
| b = a; | ||
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| a2 = b2; | ||
| b2 = a2; | ||
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| a = b2; | ||
| b = a2; | ||
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| a2 = b; | ||
| b2 = a; | ||
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| //// [varianceCantBeStrictWhileStructureIsnt.js] | ||
| a = b; | ||
| b = a; | ||
| a2 = b2; | ||
| b2 = a2; | ||
| a = b2; | ||
| b = a2; | ||
| a2 = b; | ||
| b2 = a; |
72 changes: 72 additions & 0 deletions
72
tests/baselines/reference/varianceCantBeStrictWhileStructureIsnt.symbols
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| //// [tests/cases/compiler/varianceCantBeStrictWhileStructureIsnt.ts] //// | ||
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| === varianceCantBeStrictWhileStructureIsnt.ts === | ||
| // under non-strict-function-types, all the below should work | ||
| interface Foo<T> { | ||
| >Foo : Symbol(Foo, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 0, 0)) | ||
| >T : Symbol(T, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 1, 14)) | ||
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| member: (cb: T) => void; | ||
| >member : Symbol(Foo.member, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 1, 18)) | ||
| >cb : Symbol(cb, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 2, 13)) | ||
| >T : Symbol(T, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 1, 14)) | ||
| } | ||
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| interface Bar<T> { | ||
| >Bar : Symbol(Bar, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 3, 1)) | ||
| >T : Symbol(T, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 5, 14)) | ||
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| member: (cb: T) => void; | ||
| >member : Symbol(Bar.member, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 5, 18)) | ||
| >cb : Symbol(cb, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 6, 13)) | ||
| >T : Symbol(T, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 5, 14)) | ||
| } | ||
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| declare var a: Foo<string>; | ||
| >a : Symbol(a, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 9, 11)) | ||
| >Foo : Symbol(Foo, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 0, 0)) | ||
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| declare var b: Foo<"">; | ||
| >b : Symbol(b, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 10, 11)) | ||
| >Foo : Symbol(Foo, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 0, 0)) | ||
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| declare var a2: Bar<string>; | ||
| >a2 : Symbol(a2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 12, 11)) | ||
| >Bar : Symbol(Bar, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 3, 1)) | ||
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| declare var b2: Bar<"">; | ||
| >b2 : Symbol(b2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 13, 11)) | ||
| >Bar : Symbol(Bar, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 3, 1)) | ||
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| a = b; | ||
| >a : Symbol(a, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 9, 11)) | ||
| >b : Symbol(b, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 10, 11)) | ||
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| b = a; | ||
| >b : Symbol(b, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 10, 11)) | ||
| >a : Symbol(a, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 9, 11)) | ||
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| a2 = b2; | ||
| >a2 : Symbol(a2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 12, 11)) | ||
| >b2 : Symbol(b2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 13, 11)) | ||
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| b2 = a2; | ||
| >b2 : Symbol(b2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 13, 11)) | ||
| >a2 : Symbol(a2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 12, 11)) | ||
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| a = b2; | ||
| >a : Symbol(a, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 9, 11)) | ||
| >b2 : Symbol(b2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 13, 11)) | ||
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| b = a2; | ||
| >b : Symbol(b, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 10, 11)) | ||
| >a2 : Symbol(a2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 12, 11)) | ||
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| a2 = b; | ||
| >a2 : Symbol(a2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 12, 11)) | ||
| >b : Symbol(b, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 10, 11)) | ||
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| b2 = a; | ||
| >b2 : Symbol(b2, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 13, 11)) | ||
| >a : Symbol(a, Decl(varianceCantBeStrictWhileStructureIsnt.ts, 9, 11)) | ||
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68 changes: 68 additions & 0 deletions
68
tests/baselines/reference/varianceCantBeStrictWhileStructureIsnt.types
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| //// [tests/cases/compiler/varianceCantBeStrictWhileStructureIsnt.ts] //// | ||
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| === varianceCantBeStrictWhileStructureIsnt.ts === | ||
| // under non-strict-function-types, all the below should work | ||
| interface Foo<T> { | ||
| member: (cb: T) => void; | ||
| >member : (cb: T) => void | ||
| >cb : T | ||
| } | ||
|
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| interface Bar<T> { | ||
| member: (cb: T) => void; | ||
| >member : (cb: T) => void | ||
| >cb : T | ||
| } | ||
|
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| declare var a: Foo<string>; | ||
| >a : Foo<string> | ||
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| declare var b: Foo<"">; | ||
| >b : Foo<""> | ||
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| declare var a2: Bar<string>; | ||
| >a2 : Bar<string> | ||
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| declare var b2: Bar<"">; | ||
| >b2 : Bar<""> | ||
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| a = b; | ||
| >a = b : Foo<""> | ||
| >a : Foo<string> | ||
| >b : Foo<""> | ||
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| b = a; | ||
| >b = a : Foo<string> | ||
| >b : Foo<""> | ||
| >a : Foo<string> | ||
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| a2 = b2; | ||
| >a2 = b2 : Bar<""> | ||
| >a2 : Bar<string> | ||
| >b2 : Bar<""> | ||
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| b2 = a2; | ||
| >b2 = a2 : Bar<string> | ||
| >b2 : Bar<""> | ||
| >a2 : Bar<string> | ||
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| a = b2; | ||
| >a = b2 : Bar<""> | ||
| >a : Foo<string> | ||
| >b2 : Bar<""> | ||
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| b = a2; | ||
| >b = a2 : Bar<string> | ||
| >b : Foo<""> | ||
| >a2 : Bar<string> | ||
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| a2 = b; | ||
| >a2 = b : Foo<""> | ||
| >a2 : Bar<string> | ||
| >b : Foo<""> | ||
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| b2 = a; | ||
| >b2 = a : Foo<string> | ||
| >b2 : Bar<""> | ||
| >a : Foo<string> | ||
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28 changes: 28 additions & 0 deletions
28
tests/cases/compiler/varianceCantBeStrictWhileStructureIsnt.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| // @strict: false | ||
| // @strictFunctionTypes: false | ||
| // under non-strict-function-types, all the below should work | ||
| interface Foo<T> { | ||
| member: (cb: T) => void; | ||
| } | ||
|
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| interface Bar<T> { | ||
| member: (cb: T) => void; | ||
| } | ||
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| declare var a: Foo<string>; | ||
| declare var b: Foo<"">; | ||
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| declare var a2: Bar<string>; | ||
| declare var b2: Bar<"">; | ||
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| a = b; | ||
| b = a; | ||
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| a2 = b2; | ||
| b2 = a2; | ||
|
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| a = b2; | ||
| b = a2; | ||
|
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| a2 = b; | ||
| b2 = a; | ||
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Maybe it'd be better to do
false, truefor these?There was a problem hiding this comment.
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We already have tests covering the
truecase (as part of much larger tests - basically any variance-related test), just not thefalse.