diff --git a/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Contracts/OpcUaClientTagDefinitionFactory.cs b/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Contracts/OpcUaClientTagDefinitionFactory.cs
index 7a63848a..e5670a5b 100644
--- a/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Contracts/OpcUaClientTagDefinitionFactory.cs
+++ b/src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient.Contracts/OpcUaClientTagDefinitionFactory.cs
@@ -32,6 +32,15 @@ public static class OpcUaClientTagDefinitionFactory
/// Read the upstream node id string from an authored TagConfig blob's nodeId key
/// (camelCase, per the AdminUI OpcUaClientTagConfigModel; a legacy PascalCase NodeId
/// is also accepted). Never throws — a malformed blob yields .
+ ///
+ /// ⚠️ The two spellings are PRESENCE-shadows, not first-non-blank. The || below
+ /// short-circuits on the mere presence of nodeId — whatever it holds — and the string /
+ /// non-blank check then runs ONCE, on that one element. So the legacy NodeId is consulted
+ /// only when nodeId is wholly absent: a blank or non-string nodeId beside a
+ /// valid legacy NodeId is a rejected blob, not a fallback. The AdminUI model mirrors this
+ /// walk exactly (Gitea #557 item 1) rather than the looser first-non-blank shape MTConnect's
+ /// reader uses, which would let authoring accept a blob this reader refuses.
+ ///
///
/// The authored equipment-tag TagConfig JSON.
/// The upstream node id string when this returns .
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Uns/TagEditors/OpcUaClientTagConfigModel.cs b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Uns/TagEditors/OpcUaClientTagConfigModel.cs
index ccf7d646..6854d16b 100644
--- a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Uns/TagEditors/OpcUaClientTagConfigModel.cs
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Uns/TagEditors/OpcUaClientTagConfigModel.cs
@@ -10,17 +10,50 @@ namespace ZB.MOM.WW.OtOpcUa.AdminUI.Uns.TagEditors;
///
/// Under the v3 identity contract, TagConfig no longer carries identity — the upstream
/// node reference is an ordinary driver-specific address field. The key is the camelCase
-/// nodeId (replacing the legacy PascalCase FullName identity convention). The
+/// nodeId (replacing the legacy PascalCase FullName identity convention); a legacy
+/// PascalCase NodeId is still READ, at the driver reader's own precedence, and normalised away
+/// on save — see . The
/// driver-agnostic server-side HistoryRead intent keys (isHistorized /
/// historianTagname) are NOT modelled here — they are owned by the TagModal-merge seam
/// () and survive a load→save of this model as preserved unknown keys.
///
public sealed class OpcUaClientTagConfigModel
{
- /// The camelCase TagConfig JSON key holding the upstream node reference.
+ /// The camelCase TagConfig JSON key holding the upstream node reference — the spelling this
+ /// model writes, and the LAST of , i.e. the one the reader consults only when
+ /// no earlier spelling is present.
internal const string NodeIdKey = "nodeId";
- /// Upstream OPC UA node reference the tag binds to (the driver-side full reference). Required.
+ ///
+ /// The accepted spellings of the upstream node reference, in the reader's precedence order,
+ /// mirroring 's
+ /// TryGetProperty("nodeId", …) || TryGetProperty("NodeId", …): the v3 camelCase
+ /// nodeId first, then the legacy PascalCase NodeId a pre-v3 blob carries.
+ ///
+ /// ⚠️ This precedence is PRESENCE-shadows, not first-non-blank — see
+ /// . The reader's || short-circuits on the mere PRESENCE of
+ /// nodeId and only then asks whether the value is a non-blank string, so a present-but-blank
+ /// or present-but-non-string nodeId beside a perfectly good legacy NodeId is a
+ /// REJECTED blob, not a fallback. Copying MTConnectTagConfigModel's FirstNonBlank
+ /// walk here would make this editor accept a blob the driver skips — the absolute direction
+ /// Gitea #554 forbids.
+ ///
+ ///
+ /// Reading only nodeId was Gitea #557 item 1: a legacy blob was SERVED by the driver
+ /// yet opened with an empty reference field and could not be saved untouched, so the editor was
+ /// stricter than the reader — authoring blocking config the runtime honours.
+ /// therefore normalises onto and DROPS the legacy
+ /// spelling, exactly as MTConnectTagConfigModel does for its own aliases. Both halves are
+ /// load-bearing together: the precedence read alone would leave the legacy key in the bag to be
+ /// re-read on the next load, and the drop alone would blank every legacy tag's reference on its
+ /// next save.
+ ///
+ ///
+ private static readonly string[] NodeIdKeys = [NodeIdKey, "NodeId"];
+
+ /// Upstream OPC UA node reference the tag binds to (the driver-side full reference). Required.
+ /// Loaded from nodeId, or from the legacy PascalCase NodeId when nodeId is wholly
+ /// absent (see ); always saved as nodeId, with the legacy key dropped.
public string NodeId { get; set; } = "";
private JsonObject _bag = new();
@@ -38,31 +71,43 @@ public sealed class OpcUaClientTagConfigModel
var o = TagConfigJson.ParseOrNew(json);
return new OpcUaClientTagConfigModel
{
- NodeId = TagConfigJson.GetString(o, NodeIdKey) ?? "",
+ NodeId = ReadNodeId(o),
_source = json ?? "",
_bag = o,
};
}
/// Serialises this model back to a TagConfig JSON string over the preserved key bag.
- /// nodeId is written camelCase (the v3 address key); any history keys merged by the TagModal
- /// (isHistorized / historianTagname) are carried through untouched as preserved unknown
- /// keys.
+ /// nodeId is written camelCase (the v3 address key) and every legacy spelling of it is DROPPED
+ /// (see ); any history keys merged by the TagModal (isHistorized /
+ /// historianTagname) are carried through untouched as preserved unknown keys — they are
+ /// disjoint from the address key, so the normalisation below cannot disturb that merge.
/// The serialised TagConfig JSON string.
public string ToJson()
{
+ // Normalise onto the canonical key: a blob loaded via the legacy spelling must not keep it, or the
+ // two spellings drift on the next edit and a later reader change could pick the stale one. Driven
+ // off NodeIdKeys rather than naming "NodeId" a second time, so a spelling added to the READ can
+ // never be left behind by the DROP.
+ foreach (var legacy in NodeIdKeys)
+ {
+ if (legacy != NodeIdKey) { TagConfigJson.Set(_bag, legacy, null); }
+ }
+
TagConfigJson.Set(_bag, NodeIdKey, NodeId.Trim());
return _source = TagConfigJson.Serialize(_bag);
}
/// Validation hook; returns an error message or null when the model is valid.
///
- /// The Gitea #554 parse consult is a backstop here: the required-nodeId check above already
- /// covers the reader's whole rejection surface, and this model is in fact stricter in one
- /// narrow shape — the reader still honours a legacy PascalCase NodeId key when nodeId
- /// is wholly absent, while this model reads only the camelCase key and so refuses that blob. That
- /// predates #554 and is deliberately left alone; the fix for such a blob is to re-enter the
- /// reference, which rewrites it to the v3 key.
+ /// The Gitea #554 parse consult is a backstop here, and the required-reference check above is now
+ /// exactly as precedence-aware as the reader (Gitea #557 item 1): yields
+ /// the very token would consult — blank
+ /// for every shape it refuses, non-blank for every shape it serves — so the fast path agrees with
+ /// the parse verdict on the whole rejection surface rather than under-reading one spelling of it.
+ /// Neither half is redundant: the fast path is the only one that fires for a model built by object
+ /// initialiser (no source to parse), and the parse consult is what stops a future reader rule from
+ /// silently becoming an authoring gap.
///
/// An error message describing the validation failure, or null when valid.
public string? Validate()
@@ -73,4 +118,26 @@ public sealed class OpcUaClientTagConfigModel
j => OpcUaClientTagDefinitionFactory.TryReadNodeId(j, out _),
OpcUaClientTagDefinitionFactory.Inspect,
"OpcUaClient");
+
+ // The as-loaded node reference, read in the READER's precedence (see NodeIdKeys). Per spelling,
+ // mirroring `TryGetProperty("nodeId", out n) || TryGetProperty("NodeId", out n)` followed by ONE
+ // `n.ValueKind == String && !IsNullOrWhiteSpace(s)` check:
+ // · wholly absent → the || moves on: try the next spelling.
+ // · present, any JSON null
+ // or non-string token → STOP. The || has already short-circuited on this spelling, and the single
+ // kind check then refuses the whole blob — it can NEVER fall through to the
+ // legacy key. Yield "" so Validate() refuses exactly what the driver does.
+ // · present string → STOP, this is the effective token, blank or not. A blank one likewise
+ // shadows the legacy key and is a refusal, not a fallback.
+ // Nothing present ⇒ "", the no-reference-authored shape the reader also refuses.
+ private static string ReadNodeId(JsonObject o)
+ {
+ foreach (var key in NodeIdKeys)
+ {
+ if (!o.TryGetPropertyValue(key, out var node)) { continue; }
+ return node is JsonValue v && v.TryGetValue(out var s) ? s : "";
+ }
+
+ return "";
+ }
}
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/OpcUaClientTagConfigModelTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/OpcUaClientTagConfigModelTests.cs
index 376344cf..1eb9a13a 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/OpcUaClientTagConfigModelTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/OpcUaClientTagConfigModelTests.cs
@@ -1,6 +1,7 @@
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.AdminUI.Uns.TagEditors;
+using ZB.MOM.WW.OtOpcUa.Driver.OpcUaClient;
namespace ZB.MOM.WW.OtOpcUa.AdminUI.Tests.Uns;
@@ -102,4 +103,130 @@ public sealed class OpcUaClientTagConfigModelTests
{
new OpcUaClientTagConfigModel { NodeId = "ns=2;s=X" }.Validate().ShouldBeNull();
}
+
+ // =============================================================================================
+ // Gitea #557 item 1 — the legacy PascalCase "NodeId" spelling.
+ //
+ // The reader (OpcUaClientTagDefinitionFactory.TryReadNodeId) still honours it when the v3 camelCase
+ // "nodeId" is WHOLLY ABSENT, while this model read only "nodeId" — so a legacy blob was SERVED by the
+ // driver yet opened with an empty field and could not be saved untouched. Authoring stricter than the
+ // reader, which #554 names as never legitimate. The fix is the #550 pattern applied to this reader's
+ // own precedence: read both spellings at the reader's exact walk, write only "nodeId", drop the legacy.
+ //
+ // ⚠️ Retiring the spelling from the READER instead was rejected: it would break every legacy blob the
+ // driver currently serves at the next deploy — a data-plane regression to fix an editor asymmetry.
+ // =============================================================================================
+
+ ///
+ /// ⚠️ The precedence is PRESENCE-shadows, not first-non-blank, and every shape below is a
+ /// shape those two rules disagree about. The reader's
+ /// TryGetProperty("nodeId", out n) || TryGetProperty("NodeId", out n) short-circuits on the
+ /// mere PRESENCE of the camelCase key and then checks string-and-non-blank ONCE — so a blank or
+ /// non-string nodeId beside a valid legacy NodeId is a REJECTED blob, not a fallback.
+ /// Had this model copied MTConnectTagConfigModel's FirstNonBlank walk it would accept
+ /// those three shapes and the driver would skip the tag — the exact defect #554 forbids, introduced
+ /// while fixing its mirror image.
+ ///
+ /// The verdict is asserted against the READER for every shape, so the expectations below cannot
+ /// drift from the authority they claim to mirror, and it is asserted on the ToJson()
+ /// output as well as the original — a normalisation that changed the verdict would be a
+ /// save that silently made a tag readable or unreadable.
+ ///
+ ///
+ [Theory]
+ // 1. camelCase only — the v3 shape.
+ [InlineData("""{"nodeId":"ns=2;s=A"}""", true, "ns=2;s=A", "camelCase only")]
+ // 2. legacy only — the #557 shape: the reader serves it, so authoring must accept it.
+ [InlineData("""{"NodeId":"ns=2;s=A"}""", true, "ns=2;s=A", "legacy PascalCase only, camelCase wholly absent")]
+ // 3. both present — camelCase wins; the legacy value must never be displayed or saved.
+ [InlineData("""{"nodeId":"ns=2;s=New","NodeId":"ns=2;s=Old"}""", true, "ns=2;s=New", "camelCase out-ranks legacy")]
+ // 4. blank camelCase beside a valid legacy — SHADOWS. first-non-blank would wrongly accept this.
+ [InlineData("""{"nodeId":"","NodeId":"ns=2;s=Old"}""", false, "", "a present-but-blank camelCase key shadows the legacy one")]
+ // 5. non-string camelCase beside a valid legacy — SHADOWS, same reason.
+ [InlineData("""{"nodeId":5,"NodeId":"ns=2;s=Old"}""", false, "", "a present-but-non-string camelCase key shadows the legacy one")]
+ // 5b. JSON null is 'present' to TryGetProperty, so it shadows too — ValueKind.Null is not String.
+ [InlineData("""{"nodeId":null,"NodeId":"ns=2;s=Old"}""", false, "", "a present JSON-null camelCase key shadows the legacy one")]
+ // 6. blank legacy, no camelCase — nothing usable anywhere.
+ [InlineData("""{"NodeId":""}""", false, "", "a blank legacy key is no reference at all")]
+ [InlineData("""{"NodeId":5}""", false, "", "a non-string legacy key is no reference at all")]
+ // 7. neither spelling.
+ [InlineData("{}", false, "", "no reference under either spelling")]
+ public void Authoring_judges_every_spelling_shape_exactly_as_the_reader_does(
+ string blob, bool readerAccepts, string expectedNodeId, string why)
+ {
+ // The authority, first: if the reader's own verdict ever changes, this row fails here rather than
+ // quietly re-basing the parity claim onto whatever the model happens to do.
+ OpcUaClientTagDefinitionFactory.TryReadNodeId(blob, out var readerNodeId).ShouldBe(
+ readerAccepts, $"the reader's verdict for this blob is the premise of the row ({why}). Blob: {blob}");
+
+ var model = OpcUaClientTagConfigModel.FromJson(blob);
+
+ model.NodeId.ShouldBe(
+ expectedNodeId,
+ $"the editor must show the reference the DRIVER would read, not a different spelling's ({why}).");
+ if (readerAccepts) { model.NodeId.ShouldBe(readerNodeId); }
+
+ (model.Validate() is null).ShouldBe(
+ readerAccepts,
+ $"authoring and the reader disagree about this blob ({why}). Blob: {blob}");
+
+ // And the same verdict must survive the save: normalisation may rewrite the spelling, never the
+ // answer. (A refused blob is still serialisable — the operator has to be able to open and fix it.)
+ OpcUaClientTagDefinitionFactory.TryReadNodeId(model.ToJson(), out _).ShouldBe(
+ readerAccepts, $"ToJson() changed the reader's verdict ({why}). Blob: {blob}");
+ }
+
+ ///
+ /// The no-retype guarantee, which is the operator-visible half of #557: a legacy blob loads showing
+ /// its real reference, saves as the canonical camelCase key, and the DRIVER reads the same node id
+ /// before and after. Before the fix the field opened empty and a save blanked the binding.
+ ///
+ [Fact]
+ public void A_legacy_blob_saves_untouched_to_the_canonical_key_without_retyping_the_reference()
+ {
+ const string legacy = """{"NodeId":"nsu=urn:plc:sim;s=Line1.Speed"}""";
+ OpcUaClientTagDefinitionFactory.TryReadNodeId(legacy, out var before).ShouldBeTrue();
+
+ var saved = OpcUaClientTagConfigModel.FromJson(legacy).ToJson();
+
+ saved.ShouldContain("""
+ "nodeId":"nsu=urn:plc:sim;s=Line1.Speed"
+ """.Trim());
+ OpcUaClientTagDefinitionFactory.TryReadNodeId(saved, out var after).ShouldBeTrue(
+ "a save must never make a served tag unreadable.");
+ after.ShouldBe(before, "the save re-bound the tag to a different upstream node.");
+ }
+
+ ///
+ /// The drop half of the #550 pattern. Leaving the legacy key in the bag would let the two spellings
+ /// drift apart on the next edit, and would leave a key that only exists to be misread. Every save
+ /// path — a loaded legacy blob, a loaded both-spellings blob, a freshly authored model — emits the
+ /// canonical key alone.
+ ///
+ [Theory]
+ [InlineData("""{"NodeId":"ns=2;s=A"}""")]
+ [InlineData("""{"nodeId":"ns=2;s=New","NodeId":"ns=2;s=Old"}""")]
+ [InlineData("""{"NodeId":"ns=2;s=A","samplingIntervalMs":250}""")]
+ [InlineData("""{"NodeId":""}""")]
+ public void ToJson_never_re_emits_the_legacy_PascalCase_key(string blob)
+ {
+ var saved = OpcUaClientTagConfigModel.FromJson(blob).ToJson();
+
+ saved.ShouldNotContain("\"NodeId\"", Case.Sensitive,
+ "the legacy spelling must be normalised away on save, not carried alongside the canonical key.");
+ saved.ShouldContain("\"nodeId\":", Case.Sensitive);
+ }
+
+ /// An unrelated key still survives a legacy-spelled load→save — the drop is surgical.
+ [Fact]
+ public void Normalising_the_legacy_key_preserves_every_other_key()
+ {
+ var saved = OpcUaClientTagConfigModel
+ .FromJson("""{"NodeId":"ns=2;s=A","samplingIntervalMs":250,"isHistorized":true}""")
+ .ToJson();
+
+ saved.ShouldContain("\"samplingIntervalMs\":250");
+ saved.ShouldContain("\"isHistorized\":true");
+ saved.ShouldContain("\"nodeId\":\"ns=2;s=A\"");
+ }
}
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigAuthoringDeployParityTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigAuthoringDeployParityTests.cs
index 095234bb..6bb8c2c0 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigAuthoringDeployParityTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigAuthoringDeployParityTests.cs
@@ -164,6 +164,23 @@ public sealed class TagConfigAuthoringDeployParityTests
AssertParity(DriverTypeNames.OpcUaClient, model.Validate(), model.ToJson());
}
+ ///
+ /// Gitea #557 item 1 — a LEGACY PascalCase NodeId blob, which the reader has always served.
+ /// Both directions are asserted at once: the editor now accepts it as loaded (it used to refuse a
+ /// config the driver honours), and the blob it saves is still clean at the deploy gate. The two
+ /// configs differ — the second is the normalised nodeId rewrite — so passing this needs the
+ /// read half AND the drop half to agree.
+ ///
+ [Fact]
+ public void OpcUaClient_legacy_spelled_config_is_authorable_and_stays_clean_after_normalisation()
+ {
+ const string legacy = """{"NodeId":"nsu=urn:plc:sim;s=Line1.Speed"}""";
+ var model = OpcUaClientTagConfigModel.FromJson(legacy);
+
+ AssertParity(DriverTypeNames.OpcUaClient, model.Validate(), legacy);
+ AssertParity(DriverTypeNames.OpcUaClient, model.Validate(), model.ToJson());
+ }
+
///
/// Falsifiability control. Every assertion above would also pass against a build where the four G-7
/// inspectors were never wired — an unmapped driver type returns no warnings for anything. This one
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigNonEnumParityTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigNonEnumParityTests.cs
index fcadcc90..3828cbca 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigNonEnumParityTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigNonEnumParityTests.cs
@@ -375,6 +375,17 @@ public sealed class TagConfigNonEnumParityTests
(DriverTypeNames.OpcUaClient, """{"nodeId":"nsu=urn:plc:sim;s=Line1.Speed"}"""),
(DriverTypeNames.OpcUaClient, """{"nodeId":""}"""),
(DriverTypeNames.OpcUaClient, """{"nodeId":5}"""),
+ // Gitea #557 item 1 — the legacy PascalCase spelling, in every shape the reader's PRESENCE-shadows
+ // precedence distinguishes. These used to live one-line in DeliberatelyStricter; the fleet theories
+ // now cover them, in both directions, which is what removing that exemption bought.
+ (DriverTypeNames.OpcUaClient, """{"NodeId":"nsu=urn:plc:sim;s=Line1.Speed"}"""),
+ (DriverTypeNames.OpcUaClient, """{"nodeId":"nsu=urn:plc:sim;s=New","NodeId":"nsu=urn:plc:sim;s=Old"}"""),
+ // ⚠️ The three that a first-non-blank walk would get WRONG: a present-but-unusable camelCase key
+ // SHADOWS the legacy one, so these are refusals, not fallbacks to the perfectly good "NodeId".
+ (DriverTypeNames.OpcUaClient, """{"nodeId":"","NodeId":"nsu=urn:plc:sim;s=Old"}"""),
+ (DriverTypeNames.OpcUaClient, """{"nodeId":5,"NodeId":"nsu=urn:plc:sim;s=Old"}"""),
+ (DriverTypeNames.OpcUaClient, """{"nodeId":null,"NodeId":"nsu=urn:plc:sim;s=Old"}"""),
+ (DriverTypeNames.OpcUaClient, """{"NodeId":""}"""),
];
///
@@ -472,10 +483,11 @@ public sealed class TagConfigNonEnumParityTests
[(DriverTypeNames.Calculation, """{"scriptId":"S1","timerIntervalMs":10}""")] =
"sub-50 ms timer: deliberate editor floor, honoured verbatim by the runtime",
- // The reader still falls back to a legacy PascalCase NodeId when the v3 camelCase key is absent.
- // Pre-dates #554 and is left alone: re-entering the reference rewrites it to the v3 key.
- [(DriverTypeNames.OpcUaClient, """{"NodeId":"nsu=urn:plc:sim;s=Line1.Speed"}""")] =
- "legacy PascalCase key: the reader still honours it, this editor reads only camelCase 'nodeId'",
+ // Gitea #557 item 1 REMOVED the OpcUaClient legacy-PascalCase entry that sat here. It was the one
+ // exemption that was not a deliberate editor opinion at all — it was the editor being STRICTER
+ // than its reader for no reason but an under-read, so a blob the driver SERVED could not be saved
+ // untouched. OpcUaClientTagConfigModel now reads both spellings at the reader's exact precedence
+ // and normalises onto 'nodeId' on save; the legacy shapes are in the corpus above instead.
};
///
diff --git a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigValidatorTests.cs b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigValidatorTests.cs
index beb3a0d9..d05460df 100644
--- a/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigValidatorTests.cs
+++ b/tests/Server/ZB.MOM.WW.OtOpcUa.AdminUI.Tests/Uns/TagConfigValidatorTests.cs
@@ -60,6 +60,12 @@ public sealed class TagConfigValidatorTests
public void OpcUaClient_with_node_id_is_valid()
=> TagConfigValidator.Validate("OpcUaClient", """{"nodeId":"ns=2;s=Line3.Temp"}""").ShouldBeNull();
+ // Gitea #557 item 1: the driver's reader still honours the pre-v3 PascalCase spelling when the camelCase
+ // key is wholly absent, so the dispatched validator must too — it used to refuse a blob the driver serves.
+ [Fact]
+ public void OpcUaClient_with_a_legacy_PascalCase_node_id_is_valid()
+ => TagConfigValidator.Validate("OpcUaClient", """{"NodeId":"ns=2;s=Line3.Temp"}""").ShouldBeNull();
+
// Gitea #551 item 2: S7 is the one driver whose reader REQUIRES the dataType key to be present, so a
// blob carrying only an address is one the driver skips — this used to assert it was valid.
[Fact]