diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
new file mode 100644
index 0000000..e2201d1
--- /dev/null
+++ b/.github/workflows/test.yaml
@@ -0,0 +1,62 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+name: run tests
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.15.x
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Run linters
+      uses: golangci/golangci-lint-action@v2
+      with:
+        version: v1.29
+
+  test:
+    strategy:
+      matrix:
+        go-version: [1.15.x]
+        platform: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+    - name: Install Go
+      if: success()
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Run tests
+      run: go test -v -covermode=count
+
+  coverage:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install Go
+      if: success()
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.15.x
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Calc coverage
+      run: |
+        go test -v -covermode=count -coverprofile=coverage.out
+    - name: Convert coverage.out to coverage.lcov
+      uses: jandelgado/gcov2lcov-action@v1.0.6
+    - name: Coveralls
+      uses: coverallsapp/github-action@v1.1.2
+      with:
+          github-token: ${{ secrets.github_token }}
+          path-to-lcov: coverage.lcov
+
diff --git a/readme.md b/readme.md
index 6668d25..5329349 100644
--- a/readme.md
+++ b/readme.md
@@ -3,26 +3,17 @@
     <image src="https://www.pngkey.com/png/full/105-1052235_snowflake-png-transparent-background-snowflake-with-clear-background.png" width="250" height="250">
   </p>
   <p align="center">An Lock Free ID Generator for Golang based on Snowflake Algorithm (Twitter announced).</p>
-  <!-- <p align="center">
-    <a href="https://scrutinizer-ci.com/g/godruoyi/go-snowflake/">
-      <image src="https://scrutinizer-ci.com/g/godruoyi/go-snowflake/badges/quality-score.png?b=master" alt="quality score">
+  <p align="center">
+    <a href="https://github.com/godruoyi/go-snowflake/actions?workflow=test%20and%20build">
+      <image src="https://github.com/godruoyi/go-snowflake/actions?workflow=test%20and%20build" alt="test">
     </a>
-    <a href="https://github.com/godruoyi/go-snowflake">
-        <image src="https://github.styleci.io/repos/201936013/shield?branch=master" alt="godruoyi go-snowflake">
+    <a href="https://goreportcard.com/report/github.com/godruoyi/go-snowflake">
+      <image src="https://goreportcard.com/badge/github.com/godruoyi/go-snowflake" alt="Go report">
     </a>
-    <a href="https://github.com/godruoyi/go-snowflake">
-      <image src="https://poser.pugx.org/godruoyi/go-snowflake/license" alt="License">
+    <a href="https://coveralls.io/repos/github/godruoyi/go-snowflake/badge.svg?branch=master">
+      <image src="https://coveralls.io/repos/github/godruoyi/go-snowflake/badge.svg?branch=master" alt="Coverage status">
     </a>
-    <a href="https://packagist.org/packages/godruoyi/go-snowflake">
-      <image src="https://poser.pugx.org/godruoyi/go-snowflake/v/stable" alt="Packagist Version">
-    </a>
-    <a href="https://scrutinizer-ci.com/g/godruoyi/go-snowflake/">
-      <image src="https://scrutinizer-ci.com/g/godruoyi/go-snowflake/badges/build.png?b=master" alt="build passed">
-    </a>
-    <a href="https://github.com/godruoyi/go-snowflake">
-      <image src="https://poser.pugx.org/godruoyi/go-snowflake/downloads" alt="Total Downloads">
-    </a>
-  </p> -->
+  </p>
 </div>
 
 ## Description
@@ -35,7 +26,7 @@ Snowflake is a network service for generating unique ID numbers at high scale wi
 
 * The first bit is unused sign bit.
 * The second part consists of a 41-bit timestamp (milliseconds) whose value is the offset of the current time relative to a certain time.
-* The 10 bits machineID, and max value is 2^10 -1 = 1023.
+* The 10 bits machineID(5 bit workid + 5 bit datacenter id), max value is 2^10 -1 = 1023.
 * The last part consists of 12 bits, its means the length of the serial number generated per millisecond per working node, a maximum of 2^12 -1 = 4095 IDs can be generated in the same millisecond.
 * The binary length of 41 bits is at most 2^41 -1 millisecond = 69 years. So the snowflake algorithm can be used for up to 69 years, In order to maximize the use of the algorithm, you should specify a start time for it.
 
@@ -180,8 +171,6 @@ snowflake.SetSequenceResolver(yourSequenceNumber)
 snowflake.ID()
 ```
 
-And you can use closure:
-
 ## License
 
 MIT
diff --git a/snowflake_test.go b/snowflake_test.go
index ebb9e8b..8f2327c 100644
--- a/snowflake_test.go
+++ b/snowflake_test.go
@@ -194,9 +194,16 @@ func TestParseID(t *testing.T) {
 }
 
 func TestSID_GenerateTime(t *testing.T) {
-	sid := snowflake.ParseID(snowflake.ID())
+	snowflake.SetSequenceResolver(snowflake.AtomicResolver)
+	a, e := snowflake.NextID()
+	if e != nil {
+		t.Error(e)
+		return
+	}
+
+	sid := snowflake.ParseID(a)
 
 	if sid.GenerateTime().UTC().Second() != time.Now().UTC().Second() {
-		t.Error("The id generate time should be equal")
+		t.Error("The id generate time should be equal current time")
 	}
 }