test: cover IPMI, PSU, and SAT formatting

audit/internal/collector/board_test.go

@@ -66,6 +66,30 @@ func TestParseBIOSFirmware_empty(t *testing.T) {
 	}
 }
 
+func TestParseBMCFirmwareRevision(t *testing.T) {
+	tests := []struct {
+		name string
+		out  string
+		want string
+	}{
+		{
+			name: "value with surrounding whitespace",
+			out:  "Device ID                 : 32\nFirmware Revision         : 2.14\n",
+			want: "2.14",
+		},
+		{name: "field missing", out: "Device ID : 32\n", want: ""},
+		{name: "malformed line", out: "Firmware Revision 2.14\n", want: ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := parseBMCFirmwareRevision(tt.out); got != tt.want {
+				t.Fatalf("parseBMCFirmwareRevision() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}
+
 func TestCleanDMIValue(t *testing.T) {
 	tests := []struct {
 		input string