Wrote test for FindAllStringSubmatch()

regex/re_test.go

@@ -861,6 +861,60 @@ func TestFindStringSubmatch(t *testing.T) {
 		})
 	}
 }
+
+func TestFindAllStringSubmatch(t *testing.T) {
+	for _, test := range groupTests {
+		t.Run(test.re+"	"+test.str, func(t *testing.T) {
+			regComp, err := Compile(test.re, test.flags...)
+			if err != nil {
+				if test.result != nil {
+					panic(err)
+				}
+			}
+			matchStrs := regComp.FindAllStringSubmatch(test.str)
+			if matchStrs == nil {
+				if len(test.result) != 0 {
+					expectedStrs := funcMap(test.result, func(m Match) []string {
+						return funcMap(m, func(g Group) string {
+							if g.IsValid() {
+								return test.str[g.StartIdx:g.EndIdx]
+							} else {
+								return ""
+							}
+						})
+					})
+					t.Errorf("Wanted %v got no match\n", expectedStrs)
+				}
+			} else if len(test.result) == 0 {
+				t.Errorf("Wanted no match got %v\n", matchStrs)
+			} else {
+				expectedStrs := funcMap(test.result, func(m Match) []string {
+					return funcMap(m, func(g Group) string {
+						if g.IsValid() {
+							return test.str[g.StartIdx:g.EndIdx]
+						} else {
+							return ""
+						}
+					})
+				})
+				for i, matchStr := range matchStrs {
+					for j, groupStr := range matchStr {
+						if groupStr == "" {
+							if j < len(expectedStrs[i]) && expectedStrs[i][j] != "" {
+								t.Errorf("Wanted %v	Got %v\n", expectedStrs, matchStrs)
+							}
+						} else {
+							if expectedStrs[i][j] != groupStr {
+								t.Errorf("Wanted %v	Got %v\n", expectedStrs, matchStrs)
+							}
+						}
+					}
+				}
+			}
+		})
+	}
+}
+
 func TestFindAllSubmatch(t *testing.T) {
 	for _, test := range groupTests {
 		t.Run(test.re+"	"+test.str, func(t *testing.T) {