test: cover IPMI, PSU, and SAT formatting

audit/internal/collector/psu_sdr_test.go

@@ -133,3 +133,46 @@ func TestMergePSUSDRAppendsPSUMissingFromFRU(t *testing.T) {
 		t.Fatalf("PSUs=%#v, want FRU PSU0 plus synthesized PSU1", got)
 	}
 }
+
+func TestParseFRUFiltersNonPSUAndNormalizesSlots(t *testing.T) {
+	psus := parseFRU(`
+FRU Device Description : Builtin FRU Device (ID 0)
+ Board Mfg             : Example Systems
+FRU Device Description : PSU 2 (ID 12)
+ Board Product         : Server PSU 1600W
+ Board Mfg             : Acme Power
+ Board Serial          : PS2-SERIAL
+ Board Part Number     : ACME-1600
+ Board Extra           : 1.4
+FRU Device Description : Power Supply Bay 3 (ID 13)
+ Product Name          : Redundant 800W
+ Product Manufacturer  : Acme Power
+ Product Serial        : PS3-SERIAL
+`)
+	if len(psus) != 2 {
+		t.Fatalf("PSUs = %#v, want two PSU FRUs", psus)
+	}
+	if psus[0].Slot == nil || *psus[0].Slot != "1" || psus[0].Model == nil || *psus[0].Model != "Server PSU 1600W" ||
+		psus[0].WattageW == nil || *psus[0].WattageW != 1600 || psus[0].Status == nil || *psus[0].Status != statusOK {
+		t.Fatalf("first PSU = %#v", psus[0])
+	}
+	if psus[1].Slot == nil || *psus[1].Slot != "2" || psus[1].SerialNumber == nil || *psus[1].SerialNumber != "PS3-SERIAL" {
+		t.Fatalf("second PSU = %#v", psus[1])
+	}
+}
+
+func TestPSUNumericParsersRejectInvalidReadings(t *testing.T) {
+	for _, raw := range []string{"", "na", "0", "-1", "6001", "not-a-number"} {
+		if got := parseBoundedFloat(raw, 6000); got != nil {
+			t.Errorf("parseBoundedFloat(%q) = %v, want nil", raw, got)
+		}
+	}
+	if got := parseBoundedFloat("1200 Watts", 6000); got == nil || *got != 1200 {
+		t.Fatalf("parseBoundedFloat valid value = %v", got)
+	}
+	for raw, want := range map[string]int{"PSU 800W": 800, "1200W PLATINUM": 1200, "no wattage": 0, "6000W": 0} {
+		if got := parseWattage(raw); got != want {
+			t.Errorf("parseWattage(%q) = %d, want %d", raw, got, want)
+		}
+	}
+}