Fix delAll + add tests

check/int32_slice.go

@@ -25,7 +25,7 @@ func delAt(a []int32, i int) []int32 {
 }
 
 func delAll(a []int32, el int32) []int32 {
-	for i, ok := indexOf(a, el); ok; {
+	for i, ok := indexOf(a, el); ok; i, ok = indexOf(a, el) {
 		a = delAt(a, i)
 	}
 	return a

check/int32_slice_test.go

@@ -0,0 +1,76 @@
+package check
+
+import (
+	"reflect"
+	"testing"
+)
+
+// contains() tests
+
+func Test_Contains_ReturnsFalse(t *testing.T) {
+	if contains([]int32{1, 2, 3}, 4) == true {
+		t.Error()
+	}
+}
+
+func Test_Contains_ReturnsTrue(t *testing.T) {
+	if contains([]int32{1, 2, 3}, 2) == false {
+		t.Error()
+	}
+}
+
+// indexOf() tests
+
+func Test_IndexOf_ValueExists(t *testing.T) {
+	i, result := indexOf([]int32{1, 2, 3}, 2)
+	if i != 1 || result != true {
+		t.Error()
+	}
+}
+
+func Test_IndexOf_ValueDoesntExists(t *testing.T) {
+	i, result := indexOf([]int32{1, 2, 3}, 4)
+	if i != -1 || result != false {
+		t.Error()
+	}
+}
+
+// delAt() tests
+
+func Test_DelAt_ValueExists(t *testing.T) {
+	if !reflect.DeepEqual(delAt([]int32{1, 2, 3}, 1), []int32{1, 3}) {
+		t.Error()
+	}
+}
+
+// delAll() tests
+
+func Test_DelAll_Single(t *testing.T) {
+	if !reflect.DeepEqual(delAll([]int32{1, 2, 3}, 2), []int32{1, 3}) {
+		t.Error()
+	}
+}
+
+func Test_DelAll_Multiple(t *testing.T) {
+	if !reflect.DeepEqual(delAll([]int32{1, 2, 3, 2}, 2), []int32{1, 3}) {
+		t.Error()
+	}
+}
+
+func Test_DelAll_Missing(t *testing.T) {
+	if !reflect.DeepEqual(delAll([]int32{1, 2, 3}, 4), []int32{1, 2, 3}) {
+		t.Error()
+	}
+}
+
+func Test_DelAll_Front(t *testing.T) {
+	if !reflect.DeepEqual(delAll([]int32{1, 2, 3}, 1), []int32{2, 3}) {
+		t.Error()
+	}
+}
+
+func Test_DelAll_Back(t *testing.T) {
+	if !reflect.DeepEqual(delAll([]int32{1, 2, 3}, 3), []int32{1, 2}) {
+		t.Error()
+	}
+}