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ahejlsbergahejlsberg
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Add error elaboration test
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‎tests/baselines/reference/strictFunctionTypesErrors.errors.txt‎

Lines changed: 34 additions & 1 deletion
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@@ -79,9 +79,17 @@ tests/cases/compiler/strictFunctionTypesErrors.ts(84,1): error TS2322: Type 'Fun
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tests/cases/compiler/strictFunctionTypesErrors.ts(111,1): error TS2322: Type 'Comparer2<Dog>' is not assignable to type 'Comparer2<Animal>'.
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Type 'Animal' is not assignable to type 'Dog'.
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Property 'dog' is missing in type 'Animal'.
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tests/cases/compiler/strictFunctionTypesErrors.ts(126,1): error TS2322: Type 'Crate<Dog>' is not assignable to type 'Crate<Animal>'.
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Types of property 'onSetItem' are incompatible.
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Type '(item: Dog) => void' is not assignable to type '(item: Animal) => void'.
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Types of parameters 'item' and 'item' are incompatible.
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Type 'Animal' is not assignable to type 'Dog'.
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tests/cases/compiler/strictFunctionTypesErrors.ts(127,1): error TS2322: Type 'Crate<Animal>' is not assignable to type 'Crate<Dog>'.
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Types of property 'item' are incompatible.
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Type 'Animal' is not assignable to type 'Dog'.
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==== tests/cases/compiler/strictFunctionTypesErrors.ts (29 errors) ====
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==== tests/cases/compiler/strictFunctionTypesErrors.ts (31 errors) ====
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export {}
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@@ -304,4 +312,29 @@ tests/cases/compiler/strictFunctionTypesErrors.ts(111,1): error TS2322: Type 'Co
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!!! error TS2322: Type 'Animal' is not assignable to type 'Dog'.
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!!! error TS2322: Property 'dog' is missing in type 'Animal'.
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dogComparer2 = animalComparer2; // Ok
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// Crate<T> is invariant in --strictFunctionTypes mode
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interface Crate<T> {
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item: T;
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onSetItem: (item: T) => void;
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}
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declare let animalCrate: Crate<Animal>;
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declare let dogCrate: Crate<Dog>;
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// Errors below should elaborate the reason for invariance
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animalCrate = dogCrate; // Error
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~~~~~~~~~~~
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!!! error TS2322: Type 'Crate<Dog>' is not assignable to type 'Crate<Animal>'.
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!!! error TS2322: Types of property 'onSetItem' are incompatible.
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!!! error TS2322: Type '(item: Dog) => void' is not assignable to type '(item: Animal) => void'.
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!!! error TS2322: Types of parameters 'item' and 'item' are incompatible.
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!!! error TS2322: Type 'Animal' is not assignable to type 'Dog'.
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dogCrate = animalCrate; // Error
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~~~~~~~~
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!!! error TS2322: Type 'Crate<Animal>' is not assignable to type 'Crate<Dog>'.
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!!! error TS2322: Types of property 'item' are incompatible.
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!!! error TS2322: Type 'Animal' is not assignable to type 'Dog'.
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‎tests/baselines/reference/strictFunctionTypesErrors.js‎

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Original file line numberDiff line numberDiff line change
@@ -111,6 +111,21 @@ declare let dogComparer2: Comparer2<Dog>;
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animalComparer2 = dogComparer2; // Error
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dogComparer2 = animalComparer2; // Ok
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// Crate<T> is invariant in --strictFunctionTypes mode
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interface Crate<T> {
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item: T;
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onSetItem: (item: T) => void;
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}
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declare let animalCrate: Crate<Animal>;
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declare let dogCrate: Crate<Dog>;
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// Errors below should elaborate the reason for invariance
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animalCrate = dogCrate; // Error
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dogCrate = animalCrate; // Error
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//// [strictFunctionTypesErrors.js]
@@ -168,3 +183,6 @@ animalComparer1 = dogComparer1; // Ok
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dogComparer1 = animalComparer1; // Ok
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animalComparer2 = dogComparer2; // Error
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dogComparer2 = animalComparer2; // Ok
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// Errors below should elaborate the reason for invariance
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animalCrate = dogCrate; // Error
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dogCrate = animalCrate; // Error

‎tests/baselines/reference/strictFunctionTypesErrors.symbols‎

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@@ -364,3 +364,39 @@ dogComparer2 = animalComparer2; // Ok
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>dogComparer2 : Symbol(dogComparer2, Decl(strictFunctionTypesErrors.ts, 108, 11))
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>animalComparer2 : Symbol(animalComparer2, Decl(strictFunctionTypesErrors.ts, 107, 11))
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// Crate<T> is invariant in --strictFunctionTypes mode
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interface Crate<T> {
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>Crate : Symbol(Crate, Decl(strictFunctionTypesErrors.ts, 111, 31))
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>T : Symbol(T, Decl(strictFunctionTypesErrors.ts, 115, 16))
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item: T;
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>item : Symbol(Crate.item, Decl(strictFunctionTypesErrors.ts, 115, 20))
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>T : Symbol(T, Decl(strictFunctionTypesErrors.ts, 115, 16))
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onSetItem: (item: T) => void;
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>onSetItem : Symbol(Crate.onSetItem, Decl(strictFunctionTypesErrors.ts, 116, 12))
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>item : Symbol(item, Decl(strictFunctionTypesErrors.ts, 117, 16))
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>T : Symbol(T, Decl(strictFunctionTypesErrors.ts, 115, 16))
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}
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declare let animalCrate: Crate<Animal>;
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>animalCrate : Symbol(animalCrate, Decl(strictFunctionTypesErrors.ts, 120, 11))
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>Crate : Symbol(Crate, Decl(strictFunctionTypesErrors.ts, 111, 31))
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>Animal : Symbol(Animal, Decl(strictFunctionTypesErrors.ts, 87, 8))
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declare let dogCrate: Crate<Dog>;
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>dogCrate : Symbol(dogCrate, Decl(strictFunctionTypesErrors.ts, 121, 11))
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>Crate : Symbol(Crate, Decl(strictFunctionTypesErrors.ts, 111, 31))
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>Dog : Symbol(Dog, Decl(strictFunctionTypesErrors.ts, 89, 33))
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// Errors below should elaborate the reason for invariance
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animalCrate = dogCrate; // Error
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>animalCrate : Symbol(animalCrate, Decl(strictFunctionTypesErrors.ts, 120, 11))
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>dogCrate : Symbol(dogCrate, Decl(strictFunctionTypesErrors.ts, 121, 11))
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dogCrate = animalCrate; // Error
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>dogCrate : Symbol(dogCrate, Decl(strictFunctionTypesErrors.ts, 121, 11))
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>animalCrate : Symbol(animalCrate, Decl(strictFunctionTypesErrors.ts, 120, 11))
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‎tests/baselines/reference/strictFunctionTypesErrors.types‎

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@@ -416,3 +416,41 @@ dogComparer2 = animalComparer2; // Ok
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>dogComparer2 : Comparer2<Dog>
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>animalComparer2 : Comparer2<Animal>
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// Crate<T> is invariant in --strictFunctionTypes mode
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interface Crate<T> {
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>Crate : Crate<T>
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>T : T
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item: T;
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>item : T
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>T : T
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onSetItem: (item: T) => void;
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>onSetItem : (item: T) => void
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>item : T
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>T : T
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}
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declare let animalCrate: Crate<Animal>;
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>animalCrate : Crate<Animal>
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>Crate : Crate<T>
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>Animal : Animal
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declare let dogCrate: Crate<Dog>;
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>dogCrate : Crate<Dog>
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>Crate : Crate<T>
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>Dog : Dog
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// Errors below should elaborate the reason for invariance
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animalCrate = dogCrate; // Error
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>animalCrate = dogCrate : Crate<Dog>
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>animalCrate : Crate<Animal>
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>dogCrate : Crate<Dog>
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dogCrate = animalCrate; // Error
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>dogCrate = animalCrate : Crate<Animal>
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>dogCrate : Crate<Dog>
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>animalCrate : Crate<Animal>
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‎tests/cases/compiler/strictFunctionTypesErrors.ts‎

Lines changed: 15 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -111,3 +111,18 @@ declare let dogComparer2: Comparer2<Dog>;
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animalComparer2 = dogComparer2; // Error
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dogComparer2 = animalComparer2; // Ok
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// Crate<T> is invariant in --strictFunctionTypes mode
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interface Crate<T> {
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item: T;
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onSetItem: (item: T) => void;
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}
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declare let animalCrate: Crate<Animal>;
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declare let dogCrate: Crate<Dog>;
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// Errors below should elaborate the reason for invariance
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animalCrate = dogCrate; // Error
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dogCrate = animalCrate; // Error

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