Use helper functions to simplify range tests

src/harness/fourslash.ts

@@ -730,13 +730,78 @@ namespace FourSlash {
             }
         }
 
-        public verifyReferencesAtPositionListContains(fileName: string, start: number, end: number, isWriteAccess?: boolean, isDefinition?: boolean) {
+        public verifyReferencesCountIs(count: number, localFilesOnly = true) {
             const references = this.getReferencesAtCaret();
+            let referencesCount = 0;
+
+            if (localFilesOnly) {
+                const localFiles = this.testData.files.map<string>(file => file.fileName);
+                // Count only the references in local files. Filter the ones in lib and other files.
+                ts.forEach(references, entry => {
+                    if (localFiles.some((fileName) => fileName === entry.fileName)) {
+                        referencesCount++;
+                    }
+                });
+            }
+            else {
+                referencesCount = references && references.length || 0;
+            }
+
+            if (referencesCount !== count) {
+                const condition = localFilesOnly ? "excluding libs" : "including libs";
+                this.raiseError("Expected references count (" + condition + ") to be " + count + ", but is actually " + referencesCount);
+            }
+        }
+
+        public verifyReferencesAre(expectedReferences: Range[]) {
+            const actualReferences = this.getReferencesAtCaret() || [];
+
+            if (actualReferences.length > expectedReferences.length) {
+                // Find the unaccounted-for reference.
+                for (const actual of actualReferences) {
+                    if (!ts.forEach(expectedReferences, r => r.start === actual.textSpan.start)) {
+                        this.raiseError(`A reference ${actual} is unaccounted for.`);
+                    }
+                }
+                // Probably will never reach here.
+                this.raiseError(`There are ${actualReferences.length} references but only ${expectedReferences.length} were expected.`);
+            }
+
+            for (const reference of expectedReferences) {
+                const {fileName, start, end} = reference;
+                if (reference.marker) {
+                    const {isWriteAccess, isDefinition} = reference.marker.data;
+                    this.verifyReferencesWorker(actualReferences, fileName, start, end, isWriteAccess, isDefinition);
+                }
+                else {
+                    this.verifyReferencesWorker(actualReferences, fileName, start, end);
+                }
+            }
+        }
+
+        public verifyReferencesOf({fileName, start}: Range, references: Range[]) {
+            this.openFile(fileName);
+            this.goToPosition(start);
+            this.verifyReferencesAre(references);
+        }
 
+        public verifyRangesReferenceEachOther(ranges?: Range[]) {
+            ranges = ranges || this.getRanges();
+            assert(ranges.length);
+            for (const range of ranges) {
+                this.verifyReferencesOf(range, ranges);
+            }
+        }
+
+        public verifyReferencesAtPositionListContains(fileName: string, start: number, end: number, isWriteAccess?: boolean, isDefinition?: boolean) {
+            const references = this.getReferencesAtCaret();
             if (!references || references.length === 0) {
                 this.raiseError("verifyReferencesAtPositionListContains failed - found 0 references, expected at least one.");
             }
+            this.verifyReferencesWorker(references, fileName, start, end, isWriteAccess, isDefinition);
+        }
 
+        private verifyReferencesWorker(references: ts.ReferenceEntry[], fileName: string, start: number, end: number, isWriteAccess?: boolean, isDefinition?: boolean) {
             for (let i = 0; i < references.length; i++) {
                 const reference = references[i];
                 if (reference && reference.fileName === fileName && reference.textSpan.start === start && ts.textSpanEnd(reference.textSpan) === end) {
@@ -752,29 +817,7 @@ namespace FourSlash {
 
             const missingItem = { fileName, start, end, isWriteAccess, isDefinition };
             this.raiseError(`verifyReferencesAtPositionListContains failed - could not find the item: ${stringify(missingItem)} in the returned list: (${stringify(references)})`);
-        }
-
-        public verifyReferencesCountIs(count: number, localFilesOnly = true) {
-            const references = this.getReferencesAtCaret();
-            let referencesCount = 0;
-
-            if (localFilesOnly) {
-                const localFiles = this.testData.files.map<string>(file => file.fileName);
-                // Count only the references in local files. Filter the ones in lib and other files.
-                ts.forEach(references, entry => {
-                    if (localFiles.some((fileName) => fileName === entry.fileName)) {
-                        referencesCount++;
-                    }
-                });
-            }
-            else {
-                referencesCount = references && references.length || 0;
-            }
 
-            if (referencesCount !== count) {
-                const condition = localFilesOnly ? "excluding libs" : "including libs";
-                this.raiseError("Expected references count (" + condition + ") to be " + count + ", but is actually " + referencesCount);
-            }
         }
 
         private getMemberListAtCaret() {
@@ -2836,14 +2879,6 @@ namespace FourSlashInterface {
             this.state.verifyMemberListIsEmpty(this.negative);
         }
 
-        public referencesCountIs(count: number) {
-            this.state.verifyReferencesCountIs(count, /*localFilesOnly*/ false);
-        }
-
-        public referencesAtPositionContains(range: FourSlash.Range, isWriteAccess?: boolean, isDefinition?: boolean) {
-            this.state.verifyReferencesAtPositionListContains(range.fileName, range.start, range.end, isWriteAccess, isDefinition);
-        }
-
         public signatureHelpPresent() {
             this.state.verifySignatureHelpPresent(!this.negative);
         }
@@ -2935,6 +2970,22 @@ namespace FourSlashInterface {
             this.state.verifyGetEmitOutputContentsForCurrentFile(expected);
         }
 
+        public referencesCountIs(count: number) {
+            this.state.verifyReferencesCountIs(count, /*localFilesOnly*/ false);
+        }
+
+        public referencesAre(ranges: FourSlash.Range[]) {
+            this.state.verifyReferencesAre(ranges);
+        }
+
+        public referencesOf(start: FourSlash.Range, references: FourSlash.Range[]) {
+            this.state.verifyReferencesOf(start, references);
+        }
+
+        public rangesReferenceEachOther(ranges?: FourSlash.Range[]) {
+            this.state.verifyRangesReferenceEachOther(ranges);
+        }
+
         public currentParameterHelpArgumentNameIs(name: string) {
             this.state.verifyCurrentParameterHelpName(name);
         }

tests/cases/fourslash/ambientShorthandFindAllRefs.ts

@@ -9,13 +9,4 @@
 // @Filename: user2.ts
 ////import {[|x|]} from "jquery";
 
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.file(range.fileName);
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedRange of ranges) {
-        verify.referencesAtPositionContains(expectedRange);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForComputedProperties.ts

@@ -13,12 +13,4 @@
 ////    ["[|prop1|]"]: function () { },
 ////}
 
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForComputedProperties2.ts

@@ -12,12 +12,4 @@
 ////    ["[|42|]"]: function () { }
 ////}
 
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForDefaultExport01.ts

@@ -7,12 +7,4 @@
 ////
 ////var y = new [|DefaultExportedClass|];
 
-let ranges = test.ranges()
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForDefaultExport02.ts

@@ -8,12 +8,4 @@
 ////
 ////var y = [|DefaultExportedFunction|]();
 
-let ranges = test.ranges()
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForDefaultExport03.ts

@@ -14,12 +14,4 @@
 ////    var local = 100;
 ////}
 
-let ranges = test.ranges()
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForDefaultExport04.ts

@@ -20,9 +20,4 @@
 // site is included in the references to the namespace.
 
 goTo.marker();
-let ranges = test.ranges();
-verify.referencesCountIs(ranges.length);
-
-for (let expectedReference of ranges) {
-    verify.referencesAtPositionContains(expectedReference);
-}
+verify.referencesAre(test.ranges());

tests/cases/fourslash/findAllRefsForDefaultExport05.ts

@@ -20,9 +20,4 @@
 // and all value-uses of 'f' are included in the references to the function.
 
 goTo.marker();
-let ranges = test.ranges();
-verify.referencesCountIs(ranges.length);
-
-for (let expectedReference of ranges) {
-    verify.referencesAtPositionContains(expectedReference);
-}
+verify.referencesAre(test.ranges());

tests/cases/fourslash/findAllRefsForDefaultExport06.ts

@@ -20,9 +20,4 @@
 // and all value-uses of 'f' are included in the references to the function.
 
 goTo.marker();
-let ranges = test.ranges();
-verify.referencesCountIs(ranges.length);
-
-for (let expectedReference of ranges) {
-    verify.referencesAtPositionContains(expectedReference);
-}
+verify.referencesAre(test.ranges());

tests/cases/fourslash/findAllRefsForFunctionExpression01.ts

@@ -9,13 +9,4 @@
 /////// <reference path="file1.ts" />
 ////foo();
 
-
-let ranges = test.ranges()
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForObjectLiteralProperties.ts

@@ -8,13 +8,4 @@
 ////
 ////let {[|property|]: pVar} = x;
 
-
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForStringLiteralTypes.ts

@@ -3,12 +3,4 @@
 ////type Options = "[|option 1|]" | "option 2";
 ////let myOption: Options = "[|option 1|]";
 
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForVariableInExtendsClause01.ts

@@ -1,15 +1,6 @@
 /// <reference path="fourslash.ts"/>
 
-
 ////var [|Base|] = class { };
 ////class C extends [|Base|] { }
 
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsForVariableInExtendsClause02.ts

@@ -6,12 +6,4 @@
 ////    interface I extends [|Base|] { }
 ////}
 
-let ranges = test.ranges();
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsInClassExpression.ts

@@ -5,12 +5,4 @@
 ////   [|boom|](){}
 ////}
 
-let ranges = test.ranges()
-for (let range of ranges) {
-    goTo.position(range.start);
-
-    verify.referencesCountIs(ranges.length);
-    for (let expectedReference of ranges) {
-        verify.referencesAtPositionContains(expectedReference);
-    }
-}
+verify.rangesReferenceEachOther();

tests/cases/fourslash/findAllRefsInheritedProperties1.ts

@@ -9,17 +9,8 @@
 //// v.[|doStuff|]();
 //// v.[|propName|];
 
-function verifyReferences(query: FourSlashInterface.Range, references: FourSlashInterface.Range[]) {
-    goTo.position(query.start);
-    for (const ref of references) {
-        verify.referencesAtPositionContains(ref);
-    }
-}
-
-const ranges = test.ranges();
-verify.assertHasRanges(ranges);
-const [r0, r1, r2, r3] = ranges;
-verifyReferences(r0, [r0, r2]);
-verifyReferences(r1, [r1, r3]);
-verifyReferences(r2, [r0, r2]);
-verifyReferences(r3, [r1, r3]);
+const [r0, r1, r2, r3] = test.ranges();
+verify.referencesOf(r0, [r0, r2]);
+verify.referencesOf(r1, [r1, r3]);
+verify.referencesOf(r2, [r0, r2]);
+verify.referencesOf(r3, [r1, r3]);