Add test

.github/workflows/build.yml

@@ -1,9 +1,13 @@
 name: Test build
 
 on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
   push:
     branches:
-      - *
+      - main
 
 jobs:
   release:

.github/workflows/test.yml

@@ -0,0 +1,26 @@
+name: Go Test
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    name: Run Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install build dependency
+        run: |
+          sudo apt update
+          sudo apt install -y golang
+
+      - name: Run Tests
+        run: go test ./...

ip/ip.go

@@ -91,6 +91,10 @@ func ExtractIPAddress(input string) (string, error) {
 		return "", fmt.Errorf("no ip found")
 	}
 
+	if !isValidIP(matches[1]) {
+		return "", fmt.Errorf("invalid ip found")
+	}
+
 	// 抽出したIPアドレスを返す
 	return matches[1], nil
 }

ip/ip_test.go

@@ -0,0 +1,24 @@
+package ip
+
+import "testing"
+
+func testIPAddressExtracer(t *testing.T, testIP string, expectedResult string) {
+	result, err := ExtractIPAddress(testIP)
+	if err != nil {
+		if expectedResult != "ERROR" {
+			t.Errorf("function returned an error")
+		} else if err != nil && expectedResult == "ERROR" {
+			return
+		}
+	}
+	if result != expectedResult {
+		t.Errorf("ExtractIPAddress(%s) = %s, expected %s", testIP, result, expectedResult)
+	}
+}
+
+func TestExtractIPAddress(t *testing.T) {
+	testIPAddressExtracer(t, "192.168.1.1:22", "192.168.1.1")
+	testIPAddressExtracer(t, "192.168.999.888:5432", "ERROR")
+	testIPAddressExtracer(t, "0.0.0.0:9999", "0.0.0.0")
+	testIPAddressExtracer(t, "255.255.255.255:2", "255.255.255.255")
+}