diff --git a/tests/cases/fourslash/completionListInTypeParameterOfClassExpression1.ts b/tests/cases/fourslash/completionListInTypeParameterOfClassExpression1.ts
index 1398b05e701..f8afcdc418c 100644
--- a/tests/cases/fourslash/completionListInTypeParameterOfClassExpression1.ts
+++ b/tests/cases/fourslash/completionListInTypeParameterOfClassExpression1.ts
@@ -4,6 +4,7 @@
 ////var C1 = class D</*1*/T> {}
 ////var C3 = class D<T, /*2*/
 ////var C4 = class D<T, /*3*/U>{}
+////var C5 = class D<T extends /*4*/>{}
 
 goTo.marker("0");
 verify.completionListIsEmpty();
@@ -12,4 +13,6 @@ verify.completionListIsEmpty();
 goTo.marker("2");
 verify.completionListIsEmpty();
 goTo.marker("3");
-verify.completionListIsEmpty();
\ No newline at end of file
+verify.completionListIsEmpty();
+goTo.marker("4");
+verify.not.completionListIsEmpty();
\ No newline at end of file
diff --git a/tests/cases/fourslash/completionListInTypeParameterOfTypeAlias2.ts b/tests/cases/fourslash/completionListInTypeParameterOfTypeAlias2.ts
index e804fb8946a..80a910da798 100644
--- a/tests/cases/fourslash/completionListInTypeParameterOfTypeAlias2.ts
+++ b/tests/cases/fourslash/completionListInTypeParameterOfTypeAlias2.ts
@@ -10,11 +10,9 @@ verify.completionListIsEmpty();
 goTo.marker("1");
 verify.completionListContains("V");
 goTo.marker("2");
-verify.not.completionListIsEmpty();
 verify.completionListContains("K");
 verify.completionListContains("V");
 goTo.marker("3");
-verify.not.completionListIsEmpty();
 verify.not.completionListContains("K");
 verify.not.completionListContains("V");
 verify.completionListContains("K1");
diff --git a/tests/cases/fourslash/quickInfoDisplayPartsTypeParameterInTypeAlias.ts b/tests/cases/fourslash/quickInfoDisplayPartsTypeParameterInTypeAlias.ts
index 1bec6868e95..b6a10e086c2 100644
--- a/tests/cases/fourslash/quickInfoDisplayPartsTypeParameterInTypeAlias.ts
+++ b/tests/cases/fourslash/quickInfoDisplayPartsTypeParameterInTypeAlias.ts
@@ -1,13 +1,22 @@
 /// <reference path='fourslash.ts'/>
 
 ////type /*0*/List</*1*/T> = /*2*/T[]
+////type /*3*/List2</*4*/T extends string> = /*5*/T[];
+
+type List2<T extends string> = T[];
 
 type L<T> = T[]
 let typeAliashDisplayParts = [{ text: "type", kind: "keyword" }, { text: " ", kind: "space" }, { text: "List", kind: "aliasName" },
     { text: "<", kind: "punctuation" }, { text: "T", kind: "typeParameterName" }, { text: ">", kind: "punctuation" }];
+
+let typeAliashDisplayParts2 = [{ text: "type", kind: "keyword" }, { text: " ", kind: "space" }, { text: "List2", kind: "aliasName" },
+    { text: "<", kind: "punctuation" }, { text: "T", kind: "typeParameterName" }, { text: " ", kind: "space" }, { text: "extends", kind: "keyword" },
+    { text: " ", kind: "space" }, { text: "string", kind: "keyword" }, { text: ">", kind: "punctuation" }];
+
 let typeParameterDisplayParts = [{ text: "(", kind: "punctuation" }, { text: "type parameter", kind: "text" }, { text: ")", kind: "punctuation" }, { text: " ", kind: "space" },
     { text: "T", kind: "typeParameterName" }, { text: " ", kind: "space" }, { text: "in", kind: "keyword" }, { text: " ", kind: "space" } ]
 
+
 goTo.marker('0');
 verify.verifyQuickInfoDisplayParts("type", "", { start: test.markerByName("0").position, length: "List".length },
     typeAliashDisplayParts.concat([{ text: " ", kind: "space" }, { text: "=", kind: "operator" }, { "text": " ", "kind": "space" }, { text: "T", kind: "typeParameterName" },
@@ -20,3 +29,16 @@ verify.verifyQuickInfoDisplayParts("type parameter", "", { start: test.markerByN
 goTo.marker('2');
 verify.verifyQuickInfoDisplayParts("type parameter", "", { start: test.markerByName("2").position, length: "T".length },
     typeParameterDisplayParts.concat(typeAliashDisplayParts), []);
+
+goTo.marker('3');
+verify.verifyQuickInfoDisplayParts("type", "", { start: test.markerByName("3").position, length: "List2".length },
+    typeAliashDisplayParts2.concat([{ text: " ", kind: "space" }, { text: "=", kind: "operator" }, { "text": " ", "kind": "space" }, { text: "T", kind: "typeParameterName" },
+        { text: "[", kind: "punctuation" }, { text: "]", kind: "punctuation" }]), []);
+
+goTo.marker('4');
+verify.verifyQuickInfoDisplayParts("type parameter", "", { start: test.markerByName("4").position, length: "T".length },
+    typeParameterDisplayParts.concat(typeAliashDisplayParts2), []);
+
+goTo.marker('5');
+verify.verifyQuickInfoDisplayParts("type parameter", "", { start: test.markerByName("5").position, length: "T".length },
+    typeParameterDisplayParts.concat(typeAliashDisplayParts2), []);
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