initial config manager

internal/confmgr/diff_test.go

@@ -0,0 +1,55 @@
+package confmgr
+
+import "testing"
+
+func TestDiffSets(t *testing.T) {
+	left := ConfigSet{Parameters: []Parameter{
+		{Key: "a", DS: "d", Signal: "A", Type: TypeFloat, Default: 1.0},
+		{Key: "b", DS: "d", Signal: "B", Type: TypeFloat},
+	}}
+	right := ConfigSet{Parameters: []Parameter{
+		{Key: "a", DS: "d", Signal: "A", Type: TypeFloat, Default: 2.0}, // changed default
+		{Key: "c", DS: "d", Signal: "C", Type: TypeFloat},               // added
+	}}
+	diff := DiffSets(left, right)
+	got := map[string]ChangeStatus{}
+	for _, e := range diff {
+		got[e.Key] = e.Status
+	}
+	if got["a"] != StatusChanged {
+		t.Errorf("a: want changed, got %s", got["a"])
+	}
+	if got["b"] != StatusRemoved {
+		t.Errorf("b: want removed, got %s", got["b"])
+	}
+	if got["c"] != StatusAdded {
+		t.Errorf("c: want added, got %s", got["c"])
+	}
+}
+
+func TestDiffSetsUnchanged(t *testing.T) {
+	p := Parameter{Key: "a", DS: "d", Signal: "A", Type: TypeFloat, Default: 1.0}
+	diff := DiffSets(ConfigSet{Parameters: []Parameter{p}}, ConfigSet{Parameters: []Parameter{p}})
+	if len(diff) != 1 || diff[0].Status != StatusUnchanged {
+		t.Errorf("want single unchanged entry, got %+v", diff)
+	}
+}
+
+func TestDiffInstances(t *testing.T) {
+	left := ConfigInstance{Values: map[string]any{"a": 1.0, "b": "x"}}
+	right := ConfigInstance{Values: map[string]any{"a": 2.0, "c": true}}
+	diff := DiffInstances(left, right)
+	got := map[string]ChangeStatus{}
+	for _, e := range diff {
+		got[e.Key] = e.Status
+	}
+	if got["a"] != StatusChanged {
+		t.Errorf("a: want changed, got %s", got["a"])
+	}
+	if got["b"] != StatusRemoved {
+		t.Errorf("b: want removed, got %s", got["b"])
+	}
+	if got["c"] != StatusAdded {
+		t.Errorf("c: want added, got %s", got["c"])
+	}
+}