Fix test helper

Andy Hanson · Andy Hanson · commit d8667ae32379 · 2016-06-08T13:14:22.000-07:00
diff --git a/tests/cases/unittests/transpile.ts b/tests/cases/unittests/transpile.ts
@@ -10,12 +10,16 @@ namespace ts {
             expectedDiagnosticTexts?: string[];
         }
 
-        function checkDiagnostics(diagnostics: Diagnostic[], expectedDiagnosticCodes: number[] = [], expectedDiagnosticTexts: string[] = []) {
+        function checkDiagnostics(diagnostics: Diagnostic[], expectedDiagnosticCodes: number[] = [], expectedDiagnosticTexts?: string[]) {
             const n = expectedDiagnosticCodes.length;
-            assert.equal(n, expectedDiagnosticTexts.length);
+            if (expectedDiagnosticTexts) {
+                assert.equal(n, expectedDiagnosticTexts.length);
+            }
             for (let i = 0; i < n; i++) {
                 assert.equal(expectedDiagnosticCodes[i], diagnostics[i] && diagnostics[i].code, `Could not find expected diagnostic.`);
-                assert.equal(expectedDiagnosticTexts[i], diagnostics[i] && diagnostics[i].messageText);
+                if (expectedDiagnosticTexts) {
+                    assert.equal(expectedDiagnosticTexts[i], diagnostics[i] && diagnostics[i].messageText);
+                }
             }
             assert.equal(diagnostics.length, n, "Resuting diagnostics count does not match expected");
         }

Original file line number	Diff line number	Diff line change
`@@ -10,12 +10,16 @@ namespace ts {`
`10`	`10`	`expectedDiagnosticTexts?: string[];`
`11`	`11`	`}`
`12`	`12`
`13`		`- function checkDiagnostics(diagnostics: Diagnostic[], expectedDiagnosticCodes: number[] = [], expectedDiagnosticTexts: string[] = []) {`
	`13`	`+ function checkDiagnostics(diagnostics: Diagnostic[], expectedDiagnosticCodes: number[] = [], expectedDiagnosticTexts?: string[]) {`
`14`	`14`	`const n = expectedDiagnosticCodes.length;`
`15`		`- assert.equal(n, expectedDiagnosticTexts.length);`
	`15`	`+ if (expectedDiagnosticTexts) {`
	`16`	`+ assert.equal(n, expectedDiagnosticTexts.length);`
	`17`	`+ }`
`16`	`18`	`for (let i = 0; i < n; i++) {`
`17`	`19`	assert.equal(expectedDiagnosticCodes[i], diagnostics[i] && diagnostics[i].code, `Could not find expected diagnostic.`);
`18`		`- assert.equal(expectedDiagnosticTexts[i], diagnostics[i] && diagnostics[i].messageText);`
	`20`	`+ if (expectedDiagnosticTexts) {`
	`21`	`+ assert.equal(expectedDiagnosticTexts[i], diagnostics[i] && diagnostics[i].messageText);`
	`22`	`+ }`
`19`	`23`	`}`
`20`	`24`	`assert.equal(diagnostics.length, n, "Resuting diagnostics count does not match expected");`
`21`	`25`	`}`