75 lines
1.4 KiB
JavaScript
75 lines
1.4 KiB
JavaScript
var undef_tests =
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[
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// NOTE: not (yet?) supporting non-strict eq test for undefined
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// expr !== undefined
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function() {
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var x : ?string = "xxx";
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if (x !== undefined && x !== null) {
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var y : string = x; // ok
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}
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},
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function() {
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var x : ?string = "xxx";
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if (undefined !== x && x !== null) {
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var y : string = x; // ok
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}
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},
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function() {
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var x : {p:?string} = {p:"xxx"};
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if (x.p !== undefined && x.p !== null) {
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var y : string = x.p; // ok
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}
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},
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function() {
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var x : {p:{q:?string}} = {p:{q:"xxx"}};
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if (x.p.q !== undefined && x.p.q !== null) {
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var y : string = x.p.q; // ok
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}
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},
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// expr === undefined
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function() {
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var x : ?string = "xxx";
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if (x === undefined || x === null) {} else {
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var y : string = x; // ok
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}
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},
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function() {
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var x : {p:?string} = {p:"xxx"};
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if (x.p === undefined || x.p === null) {} else {
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var y : string = x.p; // ok
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}
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},
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function() {
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var x : {p:{q:?string}} = {p:{q:"xxx"}};
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if (x.p.q === undefined || x.p.q === null) {} else {
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var y : string = x.p.q; // ok
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}
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},
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];
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// this.p op undefined
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class A {
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p: ?string;
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ensure0(): string {
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if (this.p !== undefined && this.p !== null)
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return this.p;
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else
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return "";
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}
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ensure1(): string {
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if (this.p === undefined || this.p === null)
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return "";
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else
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return this.p;
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}
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}
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