Support parse boolean flag with no value (#579)

* Support parse boolean flag with no value

* Add test for parse boolean flag with false value

Co-authored-by: Roberto Rojas <robertojrojas@gmail.com>

check/data

@@ -308,6 +308,26 @@ groups:
               value: '^1\.12.*$'
             set: true
 
+    - id: 27
+      text: "check boolean flag with no value"
+      tests:
+        test_items:
+          - flag: "--peer-client-cert-auth"
+            compare:
+              op: eq
+              value: true
+            set: true
+
+    - id: 28
+      text: "check boolean flag with false value"
+      tests:
+        test_items:
+          - flag: "--peer-client-cert-auth"
+            compare:
+              op: eq
+              value: false
+            set: true
+
 - id: 2.1
   text: "audit and audit_config commands"
   checks:

check/test.go

@@ -114,9 +114,14 @@ func (t *testItem) execute(s string) *testOutput {
 				if len(vals) > 0 {
 					if vals[3] != "" {
 						flagVal = vals[3]
+					} else {
+						// --bool-flag
+						if strings.HasPrefix(t.Flag, "--") {
+							flagVal = "true"
 						} else {
 							flagVal = vals[1]
 						}
+					}
 				} else {
 					fmt.Fprintf(os.Stderr, "invalid flag in testitem definition")
 					os.Exit(1)

check/test_test.go

@@ -156,6 +156,30 @@ func TestTestExecute(t *testing.T) {
 			controls.Groups[0].Checks[26],
 			"currentMasterVersion: 1.12.7",
 		},
+		{
+			controls.Groups[0].Checks[27],
+			"--peer-client-cert-auth",
+		},
+		{
+			controls.Groups[0].Checks[27],
+			"--abc=true --peer-client-cert-auth --efg=false",
+		},
+		{
+			controls.Groups[0].Checks[27],
+			"--abc --peer-client-cert-auth --efg",
+		},
+		{
+			controls.Groups[0].Checks[27],
+			"--peer-client-cert-auth=true",
+		},
+		{
+			controls.Groups[0].Checks[27],
+			"--abc --peer-client-cert-auth=true --efg",
+		},
+		{
+			controls.Groups[0].Checks[28],
+			"--abc --peer-client-cert-auth=false --efg",
+		},
 	}
 
 	for _, c := range cases {