Adding test

Author: ahejlsberg

tests/baselines/reference/intersectionTypeOverloading.js

@@ -0,0 +1,26 @@
+//// [intersectionTypeOverloading.ts]
+// Check that order is preserved in intersection types for purposes of
+// overload resolution
+
+type F = (s: string) => string;
+type G = (x: any) => any;
+
+var fg: F & G;
+var gf: G & F;
+
+var x = fg("abc");
+var x: string;
+
+var y = gf("abc");
+var y: any;
+
+
+//// [intersectionTypeOverloading.js]
+// Check that order is preserved in intersection types for purposes of
+// overload resolution
+var fg;
+var gf;
+var x = fg("abc");
+var x;
+var y = gf("abc");
+var y;

tests/baselines/reference/intersectionTypeOverloading.symbols

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+=== tests/cases/conformance/types/intersection/intersectionTypeOverloading.ts ===
+// Check that order is preserved in intersection types for purposes of
+// overload resolution
+
+type F = (s: string) => string;
+>F : Symbol(F, Decl(intersectionTypeOverloading.ts, 0, 0))
+>s : Symbol(s, Decl(intersectionTypeOverloading.ts, 3, 10))
+
+type G = (x: any) => any;
+>G : Symbol(G, Decl(intersectionTypeOverloading.ts, 3, 31))
+>x : Symbol(x, Decl(intersectionTypeOverloading.ts, 4, 10))
+
+var fg: F & G;
+>fg : Symbol(fg, Decl(intersectionTypeOverloading.ts, 6, 3))
+>F : Symbol(F, Decl(intersectionTypeOverloading.ts, 0, 0))
+>G : Symbol(G, Decl(intersectionTypeOverloading.ts, 3, 31))
+
+var gf: G & F;
+>gf : Symbol(gf, Decl(intersectionTypeOverloading.ts, 7, 3))
+>G : Symbol(G, Decl(intersectionTypeOverloading.ts, 3, 31))
+>F : Symbol(F, Decl(intersectionTypeOverloading.ts, 0, 0))
+
+var x = fg("abc");
+>x : Symbol(x, Decl(intersectionTypeOverloading.ts, 9, 3), Decl(intersectionTypeOverloading.ts, 10, 3))
+>fg : Symbol(fg, Decl(intersectionTypeOverloading.ts, 6, 3))
+
+var x: string;
+>x : Symbol(x, Decl(intersectionTypeOverloading.ts, 9, 3), Decl(intersectionTypeOverloading.ts, 10, 3))
+
+var y = gf("abc");
+>y : Symbol(y, Decl(intersectionTypeOverloading.ts, 12, 3), Decl(intersectionTypeOverloading.ts, 13, 3))
+>gf : Symbol(gf, Decl(intersectionTypeOverloading.ts, 7, 3))
+
+var y: any;
+>y : Symbol(y, Decl(intersectionTypeOverloading.ts, 12, 3), Decl(intersectionTypeOverloading.ts, 13, 3))
+

tests/baselines/reference/intersectionTypeOverloading.types

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+=== tests/cases/conformance/types/intersection/intersectionTypeOverloading.ts ===
+// Check that order is preserved in intersection types for purposes of
+// overload resolution
+
+type F = (s: string) => string;
+>F : (s: string) => string
+>s : string
+
+type G = (x: any) => any;
+>G : (x: any) => any
+>x : any
+
+var fg: F & G;
+>fg : ((s: string) => string) & ((x: any) => any)
+>F : (s: string) => string
+>G : (x: any) => any
+
+var gf: G & F;
+>gf : ((x: any) => any) & ((s: string) => string)
+>G : (x: any) => any
+>F : (s: string) => string
+
+var x = fg("abc");
+>x : string
+>fg("abc") : string
+>fg : ((s: string) => string) & ((x: any) => any)
+>"abc" : string
+
+var x: string;
+>x : string
+
+var y = gf("abc");
+>y : any
+>gf("abc") : any
+>gf : ((x: any) => any) & ((s: string) => string)
+>"abc" : string
+
+var y: any;
+>y : any
+

tests/cases/conformance/types/intersection/intersectionTypeOverloading.ts

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+// Check that order is preserved in intersection types for purposes of
+// overload resolution
+
+type F = (s: string) => string;
+type G = (x: any) => any;
+
+var fg: F & G;
+var gf: G & F;
+
+var x = fg("abc");
+var x: string;
+
+var y = gf("abc");
+var y: any;