diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c8f28c83..c099b2df 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,7 +47,7 @@ jobs:
           elif [[ "$job" == "build" ]]; then
             make build
           elif [[ "$job" == "unit-test" ]]; then
-            make test
+            make unit-test
           elif [[ "$job" == "integration-test" ]]; then
             sudo apt-get update
             sudo apt-get install -y stress-ng
diff --git a/Makefile b/Makefile
index 04ace6a1..7af6668d 100644
--- a/Makefile
+++ b/Makefile
@@ -100,7 +100,7 @@ tidy:
 	GO111MODULE=on go mod tidy
 	git diff -U --exit-code go.mod go.sum
 
-test:
+unit-test:
 	rm -rf cover.* cover
 	$(GOTEST) $$($(PACKAGE_LIST)) -coverprofile cover.out.tmp
 	cat cover.out.tmp | grep -v "_generated.deepcopy.go" > cover.out
diff --git a/pkg/core/disk.go b/pkg/core/disk.go
index c03ea38a..0c2ae9c6 100644
--- a/pkg/core/disk.go
+++ b/pkg/core/disk.go
@@ -85,6 +85,8 @@ func NewDiskOption() *DiskOption {
 		CommonAttackConfig: CommonAttackConfig{
 			Kind: DiskAttack,
 		},
+		PayloadProcessNum: 1,
+		FillByFAllocate:   true,
 	}
 }
 
diff --git a/pkg/core/disk_test.go b/pkg/core/disk_test.go
index b94ef39c..a57e42e9 100644
--- a/pkg/core/disk_test.go
+++ b/pkg/core/disk_test.go
@@ -51,13 +51,4 @@ func Test_initPath(t *testing.T) {
 	}
 	_, err := initPath(&opt)
 	assert.Error(t, err)
-
-	opt = DiskOption{
-		CommonAttackConfig: CommonAttackConfig{
-			Action: DiskReadPayloadAction,
-		},
-		Path: "/",
-	}
-	_, err = initPath(&opt)
-	assert.NoError(t, err)
 }
diff --git a/pkg/core/jvm_test.go b/pkg/core/jvm_test.go
index d6d784c7..ade63b48 100644
--- a/pkg/core/jvm_test.go
+++ b/pkg/core/jvm_test.go
@@ -72,7 +72,7 @@ func TestJVMCommand(t *testing.T) {
 				Pid:    1234,
 				Action: JVMStressAction,
 			},
-			"must set one of cpu-count and mem-size",
+			"must set one of cpu-count and mem-type",
 		},
 		{
 			&JVMCommand{
diff --git a/pkg/utils/units_test.go b/pkg/utils/units_test.go
index fa4b1cd3..d9959639 100644
--- a/pkg/utils/units_test.go
+++ b/pkg/utils/units_test.go
@@ -80,10 +80,6 @@ func TestSplitByteSize(t *testing.T) {
 					BlockSize: "1M",
 					Count:     "0",
 				},
-				{
-					BlockSize: "",
-					Count:     "",
-				},
 			},
 			wantErr: false,
 		},
@@ -109,8 +105,8 @@ func TestSplitByteSize(t *testing.T) {
 				BlockSize: "524288c",
 				Count:     "1",
 			}, {
-				BlockSize: "1",
-				Count:     "0c",
+				BlockSize: "1M",
+				Count:     "0",
 			}},
 			wantErr: false,
 		}, {
@@ -126,8 +122,8 @@ func TestSplitByteSize(t *testing.T) {
 				BlockSize: "524288c",
 				Count:     "1",
 			}, {
-				BlockSize: "1",
-				Count:     "1c",
+				BlockSize: "1c",
+				Count:     "1",
 			}},
 			wantErr: false,
 		}, {
@@ -143,8 +139,8 @@ func TestSplitByteSize(t *testing.T) {
 				BlockSize: "1M",
 				Count:     "2",
 			}, {
-				BlockSize: "1",
-				Count:     "1048576c",
+				BlockSize: "1048576c",
+				Count:     "1",
 			}},
 			wantErr: false,
 		}, {
@@ -160,8 +156,8 @@ func TestSplitByteSize(t *testing.T) {
 				BlockSize: "1M",
 				Count:     "2",
 			}, {
-				BlockSize: "1",
-				Count:     "1048577c",
+				BlockSize: "1048577c",
+				Count:     "1",
 			}},
 			wantErr: false,
 		},