1 files changed, 61 insertions, 0 deletions
diff --git a/Tests/NorgKitTests/Models/DetachedModifierTests.swift b/Tests/NorgKitTests/Models/DetachedModifierTests.swift
new file mode 100644
index 0000000..7ef1479
--- /dev/null
+++ b/Tests/NorgKitTests/Models/DetachedModifierTests.swift
@@ -0,0 +1,61 @@
+import Testing
+
+@testable import NorgKit
+
+struct DetachedModifierTests {
+
+  private let markers = ASCIIByteSet("*-~>$^:")
+
+  @Test func parsesMarkerLevelAndContent() {
+    let m = DetachedModifier.parse("** heading"[...], accepting: markers)
+    #expect(m?.marker == "*")
+    #expect(m?.level == 2)
+    #expect(m?.content == "heading")
+    #expect(m?.status == nil)
+  }
+
+  @Test func skipsLeadingWhitespace() {
+    let m = DetachedModifier.parse("   - item"[...], accepting: markers)
+    #expect(m?.marker == "-")
+    #expect(m?.level == 1)
+    #expect(m?.content == "item")
+  }
+
+  @Test func parsesStatusAndStatusIndex() {
+    let line = "- (x) done"
+    let m = DetachedModifier.parse(line[...], accepting: markers)
+    #expect(m?.status == .done)
+    #expect(m?.content == "done")
+
+    if let index = m?.statusIndex {
+      #expect(line[index] == "x")
+    } else {
+      Issue.record("Expected a status index")
+    }
+  }
+
+  @Test func returnsNilForUnacceptedMarker() {
+    #expect(DetachedModifier.parse("+ item"[...], accepting: markers) == nil)
+  }
+
+  @Test func returnsNilWithoutWhitespaceAfterMarker() {
+    #expect(DetachedModifier.parse("*bold*"[...], accepting: markers) == nil)
+  }
+
+  @Test func returnsNilForEmptyAndBlankLines() {
+    #expect(DetachedModifier.parse(""[...], accepting: markers) == nil)
+    #expect(DetachedModifier.parse("    "[...], accepting: markers) == nil)
+  }
+
+  @Test func unterminatedStatusParenIsTreatedAsContent() {
+    let m = DetachedModifier.parse("- (x oops"[...], accepting: markers)
+    #expect(m?.status == nil)
+    #expect(m?.content == "(x oops")
+  }
+
+  @Test func unknownStatusCharInParensIsContent() {
+    let m = DetachedModifier.parse("- (z) text"[...], accepting: markers)
+    #expect(m?.status == nil)
+    #expect(m?.content == "(z) text")
+  }
+}