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Tests for type parameter of function

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Sheetal Nandi 2014-11-21 18:58:54 -08:00
parent eeb5e0f8b2
commit d74568f999
1 changed files with 118 additions and 0 deletions
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tests/cases/fourslash/quickInfoDisplayPartsTypeParameterInFunction.ts Normal file
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/// <reference path='fourslash.ts'/>
////function /*1*/foo</*2*/U>(/*3*/a: /*4*/U) {
//// return /*5*/a;
////}
/////*6*/foo("Hello");
////function /*7*/foo2</*8*/U extends string>(/*9*/a: /*10*/U) {
//// return /*11*/a;
////}
/////*12*/foo2("hello");
var marker = 0;
var markerName: string;
function goToMarker() {
marker++;
markerName = marker.toString();
goTo.marker(markerName);
}
function getTypeParameterDisplay(instanceType: ts.SymbolDisplayPart[],
name: string, optionalExtends?: ts.SymbolDisplayPart[]) {
return instanceType ||
function () {
var typeParameterDisplay = [{ text: name, kind: "typeParameterName" }];
if (optionalExtends) {
typeParameterDisplay.push({ text: " ", kind: "space" }, { text: "extends", kind: "keyword" },
{ text: " ", kind: "space" });
typeParameterDisplay = typeParameterDisplay.concat(optionalExtends);
}
return typeParameterDisplay
} ();
}
function verifyTypeParameter(name: string, inDisplay: ts.SymbolDisplayPart[]) {
goToMarker();
var typeParameterDisplay = [{ text: "(", kind: "punctuation" }, { text: "type parameter", kind: "text" }, { text: ")", kind: "punctuation" },
{ text: " ", kind: "space" }, { text: name, kind: "typeParameterName" },
{ text: " ", kind: "space" }, { text: "in", kind: "keyword" }, { text: " ", kind: "space" }];
typeParameterDisplay = typeParameterDisplay.concat(inDisplay);
verify.verifyQuickInfoDisplayParts("type parameter", "", { start: test.markerByName(markerName).position, length: name.length },
typeParameterDisplay, []);
}
function verifyParameter(name: string, typeParameterName: string, optionalExtends?: ts.SymbolDisplayPart[]) {
goToMarker();
var parameterDisplay = [{ text: "(", kind: "punctuation" }, { text: "parameter", kind: "text" }, { text: ")", kind: "punctuation" },
{ text: " ", kind: "space" }, { text: name, kind: "parameterName" }, { text: ":", kind: "punctuation" },
{ text: " ", kind: "space" }, { text: typeParameterName, kind: "typeParameterName" }];
if (optionalExtends) {
parameterDisplay.push({ text: " ", kind: "space" }, { text: "extends", kind: "keyword" },
{ text: " ", kind: "space" });
parameterDisplay = parameterDisplay.concat(optionalExtends);
}
verify.verifyQuickInfoDisplayParts("parameter", "", { start: test.markerByName(markerName).position, length: name.length },
parameterDisplay, []);
}
function getFunctionDisplay(name: string, optionalInstanceType?: ts.SymbolDisplayPart[],
optionalExtends?: ts.SymbolDisplayPart[]) {
var functionDisplay = [{ text: name, kind: "functionName" }, { text: "<", kind: "punctuation" }];
functionDisplay = functionDisplay.concat(
getTypeParameterDisplay(optionalInstanceType, "U", optionalExtends));
functionDisplay.push({ text: ">", kind: "punctuation" }, { text: "(", kind: "punctuation" },
{ text: "a", kind: "parameterName" }, { text: ":", kind: "punctuation" },
{ text: " ", kind: "space" });
functionDisplay = functionDisplay.concat(
getTypeParameterDisplay(optionalInstanceType, "U"));
functionDisplay.push({ text: ")", kind: "punctuation" }, { text: ":", kind: "punctuation" },
{ text: " ", kind: "space" });
functionDisplay = functionDisplay.concat(
getTypeParameterDisplay(optionalInstanceType, "U"));
return functionDisplay;
}
function verifyFunctionDisplay(name: string, optionalInstanceType?: ts.SymbolDisplayPart[],
optionalExtends?: ts.SymbolDisplayPart[]) {
goToMarker();
var functionDisplay = [{ text: "(", kind: "punctuation" }, { text: "function", kind: "text" },
{ text: ")", kind: "punctuation" }, { text: " ", kind: "space" }].concat(
getFunctionDisplay(name, optionalInstanceType, optionalExtends));
verify.verifyQuickInfoDisplayParts("function", "",
{ start: test.markerByName(markerName).position, length: name.length },
functionDisplay, []);
}
var stringTypeDisplay = [{ text: "string", kind: "keyword" }];
// Declaration
verifyFunctionDisplay("foo");
verifyTypeParameter("U", getFunctionDisplay("foo"));
verifyParameter("a", "U");
verifyTypeParameter("U", getFunctionDisplay("foo"));
verifyParameter("a", "U");
// Call
verifyFunctionDisplay("foo", stringTypeDisplay);
// With constraint
// Declaration
verifyFunctionDisplay("foo2", /*instance*/ undefined, stringTypeDisplay);
verifyTypeParameter("U", getFunctionDisplay("foo2", /*instance*/ undefined, stringTypeDisplay));
verifyParameter("a", "U", stringTypeDisplay);
verifyTypeParameter("U", getFunctionDisplay("foo2", /*instance*/ undefined, stringTypeDisplay));
verifyParameter("a", "U", stringTypeDisplay);
// Call
verifyFunctionDisplay("foo2", stringTypeDisplay);