diff --git a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/AiGenerated.kt b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/AiGenerated.kt
index a4e2baf..d8af6f1 100644
--- a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/AiGenerated.kt
+++ b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/AiGenerated.kt
@@ -133,6 +133,8 @@ fun getAllAIGeneratedValidators(): Map<Validator, OptionValueInformation> {
     Validator("config_parse_nexthop_section", "NEXTHOP_GROUP") to ConfigParseNexthopSectionOptionValue() as OptionValueInformation,
     Validator("config_parse_nexthop_section", "NEXTHOP_ID") to ConfigParseNexthopSectionOptionValue() as OptionValueInformation,
     Validator("config_parse_nexthop_section", "NEXTHOP_ONLINK") to ConfigParseNexthopSectionOptionValue() as OptionValueInformation,
+    Validator("config_parse_nsec", "0") to ConfigParseNsecOptionValue() as OptionValueInformation,
+    Validator("config_parse_permille", "0") to ConfigParsePermilleOptionValue() as OptionValueInformation,
     Validator("config_parse_pfifo_size", "QDISC_KIND_PFIFO") to ConfigParsePfifoSizeOptionValue() as OptionValueInformation,
     Validator("config_parse_pfifo_size", "QDISC_KIND_PFIFO_HEAD_DROP") to ConfigParsePfifoSizeOptionValue() as OptionValueInformation,
     Validator("config_parse_pid2", "0") to ConfigParsePid2OptionValue() as OptionValueInformation,
@@ -167,6 +169,8 @@ fun getAllAIGeneratedValidators(): Map<Validator, OptionValueInformation> {
     Validator("config_parse_sr_iov_num_vfs", "0") to ConfigParseSrIovNumVfsOptionValue() as OptionValueInformation,
     Validator("config_parse_sr_iov_vlan_proto", "0") to ConfigParseSrIovVlanProtoOptionValue() as OptionValueInformation,
     Validator("config_parse_swap_priority", "0") to ConfigParseSwapPriorityOptionValue() as OptionValueInformation,
+    Validator("config_parse_tasks_max", "0") to ConfigParseTasksMaxOptionValue() as OptionValueInformation,
+    Validator("config_parse_tbf_size", "QDISC_KIND_TBF") to ConfigParseTbfSizeOptionValue() as OptionValueInformation,
     Validator("config_parse_tcp_window", "0") to ConfigParseTcpWindowOptionValue() as OptionValueInformation,
     Validator("config_parse_timezone_mode", "0") to ConfigParseTimezoneModeOptionValue() as OptionValueInformation,
     Validator("config_parse_trigger_unit", "0") to ConfigParseTriggerUnitOptionValue() as OptionValueInformation,
@@ -176,6 +180,7 @@ fun getAllAIGeneratedValidators(): Map<Validator, OptionValueInformation> {
     Validator("config_parse_unit_condition_string", "CONDITION_CONTROL_GROUP_CONTROLLER") to ConfigParseUnitConditionStringOptionValue() as OptionValueInformation,
     Validator("config_parse_unit_condition_string", "CONDITION_CPU_FEATURE") to ConfigParseUnitConditionStringOptionValue() as OptionValueInformation,
     Validator("config_parse_unit_condition_string", "CONDITION_FIRST_BOOT") to ConfigParseUnitConditionStringOptionValue() as OptionValueInformation,
+    Validator("config_parse_unit_slice", "0") to ConfigParseUnitSliceOptionValue() as OptionValueInformation,
     Validator("config_parse_use_domains", "0") to ConfigParseUseDomainsOptionValue() as OptionValueInformation,
     Validator("config_parse_userns_chown", "0") to ConfigParseUsernsChownOptionValue() as OptionValueInformation,
     Validator("config_parse_userns_ownership", "0") to ConfigParseUsernsOwnershipOptionValue() as OptionValueInformation,
diff --git a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseNsecOptionValue.kt b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseNsecOptionValue.kt
new file mode 100644
index 0000000..a9f796c
--- /dev/null
+++ b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseNsecOptionValue.kt
@@ -0,0 +1,21 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.SimpleGrammarOptionValues
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.grammar.*
+
+/**
+ * Validator for nanosecond-time options such as TimerSlackNSec=.
+ *
+ * C function: defined via DEFINE_PARSER(nsec, ..., parse_nsec) in src/shared/conf-parser.c,
+ * which delegates to parse_nsec in src/basic/time-util.c. parse_nsec accepts "infinity" or
+ * one or more numeric terms with optional unit suffix (s/ms/us/ns/min/h/d/w/M/y...). The same
+ * syntax that TIME_VALUE encodes for the parse_sec family applies here; only the default
+ * (suffix-less) multiplier differs.
+ */
+class ConfigParseNsecOptionValue : SimpleGrammarOptionValues(
+    "config_parse_nsec",
+    SequenceCombinator(
+        OptionalWhitespacePrefix(TIME_VALUE),
+        EOF()
+    )
+)
diff --git a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParsePermilleOptionValue.kt b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParsePermilleOptionValue.kt
new file mode 100644
index 0000000..3eda554
--- /dev/null
+++ b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParsePermilleOptionValue.kt
@@ -0,0 +1,27 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.SimpleGrammarOptionValues
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.grammar.*
+
+/**
+ * Validator for permille (parts-per-thousand) options such as CAN.SamplePoint=.
+ *
+ * C function: config_parse_permille in src/shared/conf-parser.c → parse_permille in
+ * src/basic/percent-util.c. Accepts either:
+ *   - "N‰" (integer 0..1000)
+ *   - "N%" or "N.x%" (0..100% via tenths place, internally translated to 0..1000)
+ *
+ * Only the ASCII percent form is matched here; the ‰ Unicode suffix is syntactically rare.
+ */
+class ConfigParsePermilleOptionValue : SimpleGrammarOptionValues(
+    "config_parse_permille",
+    SequenceCombinator(
+        AlternativeCombinator(
+            // 0..99(.x)?%
+            SequenceCombinator(IntegerTerminal(0, 100), ZeroOrOne(RegexTerminal("\\.[0-9]", "\\.[0-9]")), LiteralChoiceTerminal("%")),
+            // 100% or 100.0%
+            SequenceCombinator(LiteralChoiceTerminal("100"), ZeroOrOne(LiteralChoiceTerminal(".0")), LiteralChoiceTerminal("%"))
+        ),
+        EOF()
+    )
+)
diff --git a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseTasksMaxOptionValue.kt b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseTasksMaxOptionValue.kt
new file mode 100644
index 0000000..7905131
--- /dev/null
+++ b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseTasksMaxOptionValue.kt
@@ -0,0 +1,37 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.SimpleGrammarOptionValues
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.grammar.*
+
+/**
+ * Validator for TasksMax=.
+ *
+ * C function: config_parse_tasks_max in src/core/load-fragment.c. The accepted values are:
+ *   - "infinity"
+ *   - a permyriad form: parse_permyriad accepts N%, N.N%, N.NN%, N‰, N.N‰, or N‱
+ *     (bounded 0..10000). Only the ASCII percent form is matched here; the ‰/‱ Unicode
+ *     suffixes are syntactically rare in unit files.
+ *   - a strictly positive uint64 via safe_atou64 (>0 and <UINT64_MAX).
+ *
+ * Suffix-less "0" is rejected by the C parser (safe_atou64 returns 0 which fails the v<=0
+ * guard); "0%" is accepted (permyriad 0). The grammar below reflects that asymmetry.
+ */
+class ConfigParseTasksMaxOptionValue : SimpleGrammarOptionValues(
+    "config_parse_tasks_max",
+    SequenceCombinator(
+        AlternativeCombinator(
+            FlexibleLiteralChoiceTerminal("infinity"),
+            // Permyriad via %: 0..100 with up to two decimal places.
+            SequenceCombinator(
+                AlternativeCombinator(
+                    SequenceCombinator(IntegerTerminal(0, 100), ZeroOrOne(RegexTerminal("\\.[0-9]{1,2}", "\\.[0-9]{1,2}"))),
+                    SequenceCombinator(LiteralChoiceTerminal("100"), ZeroOrOne(RegexTerminal("\\.0{1,2}", "\\.0{1,2}")))
+                ),
+                LiteralChoiceTerminal("%")
+            ),
+            // Strictly positive integer.
+            RegexTerminal("[0-9]+", "[1-9][0-9]*")
+        ),
+        EOF()
+    )
+)
diff --git a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseTbfSizeOptionValue.kt b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseTbfSizeOptionValue.kt
new file mode 100644
index 0000000..81524c2
--- /dev/null
+++ b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseTbfSizeOptionValue.kt
@@ -0,0 +1,20 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.SimpleGrammarOptionValues
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.grammar.*
+
+/**
+ * Validator for the TokenBucketFilter size-style options: BurstBytes, LimitBytes, MTUBytes,
+ * MPUBytes (and the deprecated Burst / LimitSize aliases).
+ *
+ * C function: config_parse_tbf_size(QDISC_KIND_TBF) in src/network/tc/tbf.c. After branching
+ * on the lvalue, it calls parse_size(rvalue, 1024, &k), so the value is a decimal byte count
+ * optionally suffixed with an IEC unit. Mirrors the existing config_parse_fq_size validator.
+ */
+class ConfigParseTbfSizeOptionValue : SimpleGrammarOptionValues(
+    "config_parse_tbf_size",
+    SequenceCombinator(
+        OptionalWhitespacePrefix(BYTES),
+        EOF()
+    )
+)
diff --git a/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseUnitSliceOptionValue.kt b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseUnitSliceOptionValue.kt
new file mode 100644
index 0000000..e07d391
--- /dev/null
+++ b/src/main/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/semanticdata/optionvalues/ai/ConfigParseUnitSliceOptionValue.kt
@@ -0,0 +1,26 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.SimpleGrammarOptionValues
+import net.sjrx.intellij.plugins.systemdunitfiles.semanticdata.optionvalues.grammar.*
+
+/**
+ * Validator for Slice= (the unit's enclosing slice).
+ *
+ * C function: config_parse_unit_slice in src/core/load-fragment.c. It calls unit_name_printf
+ * (which expands specifiers like %p/%n) and then manager_load_unit, which validates that the
+ * resolved name is a real slice unit. Pre-expansion, the value must be a single token; if it
+ * contains specifiers it can produce anything, otherwise it must already look like a slice
+ * (ends in ".slice"). Whitespace-separated lists are not accepted.
+ */
+class ConfigParseUnitSliceOptionValue : SimpleGrammarOptionValues(
+    "config_parse_unit_slice",
+    SequenceCombinator(
+        AlternativeCombinator(
+            // Literal slice unit name: no whitespace, must end in .slice
+            RegexTerminal("\\S+", "[^\\s%]+\\.slice"),
+            // Contains a specifier — expansion can produce any unit name
+            RegexTerminal("\\S+", "\\S*%\\S+|\\S+%\\S*")
+        ),
+        EOF()
+    )
+)
diff --git a/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseNsecOptionValueTest.kt b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseNsecOptionValueTest.kt
new file mode 100644
index 0000000..b0ea07e
--- /dev/null
+++ b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseNsecOptionValueTest.kt
@@ -0,0 +1,48 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.inspections.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.AbstractUnitFileTest
+import net.sjrx.intellij.plugins.systemdunitfiles.inspections.InvalidValueInspection
+import org.junit.Test
+
+class ConfigParseNsecOptionValueTest : AbstractUnitFileTest() {
+
+    @Test
+    fun testValidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [Service]
+            TimerSlackNSec=infinity
+            TimerSlackNSec=50
+            TimerSlackNSec=100us
+            TimerSlackNSec=1ms
+            TimerSlackNSec=10s
+            TimerSlackNSec=1min
+            TimerSlackNSec=2h
+            TimerSlackNSec=1d
+            TimerSlackNSec=1s 500ms
+        """.trimIndent()
+
+        setupFileInEditor("file.service", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(0, highlights)
+    }
+
+    @Test
+    fun testInvalidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [Service]
+            TimerSlackNSec=<error descr="Invalid value">abc</error>
+            TimerSlackNSec=<error descr="Invalid value">-1</error>
+            TimerSlackNSec=<error descr="Invalid value">10zz</error>
+        """.trimIndent()
+
+        setupFileInEditor("file.service", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(3, highlights)
+    }
+}
diff --git a/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParsePermilleOptionValueTest.kt b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParsePermilleOptionValueTest.kt
new file mode 100644
index 0000000..c3dcfc0
--- /dev/null
+++ b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParsePermilleOptionValueTest.kt
@@ -0,0 +1,52 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.inspections.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.AbstractUnitFileTest
+import net.sjrx.intellij.plugins.systemdunitfiles.inspections.InvalidValueInspection
+import org.junit.Test
+
+class ConfigParsePermilleOptionValueTest : AbstractUnitFileTest() {
+
+    @Test
+    fun testValidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [CAN]
+            SamplePoint=0%
+            SamplePoint=50%
+            SamplePoint=87.5%
+            SamplePoint=99%
+            SamplePoint=99.9%
+            SamplePoint=100%
+            SamplePoint=100.0%
+            DataSamplePoint=75%
+            DataSamplePoint=12.3%
+        """.trimIndent()
+
+        setupFileInEditor("file.network", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(0, highlights)
+    }
+
+    @Test
+    fun testInvalidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [CAN]
+            SamplePoint=<error descr="Invalid value">50</error>
+            SamplePoint=<error descr="Invalid value">100.5%</error>
+            SamplePoint=<error descr="Invalid value">101%</error>
+            SamplePoint=<error descr="Invalid value">200%</error>
+            SamplePoint=<error descr="Invalid value">abc</error>
+            SamplePoint=<error descr="Invalid value">50.12%</error>
+            SamplePoint=<error descr="Invalid value">-5%</error>
+        """.trimIndent()
+
+        setupFileInEditor("file.network", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(7, highlights)
+    }
+}
diff --git a/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseTasksMaxOptionValueTest.kt b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseTasksMaxOptionValueTest.kt
new file mode 100644
index 0000000..f6ed454
--- /dev/null
+++ b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseTasksMaxOptionValueTest.kt
@@ -0,0 +1,54 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.inspections.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.AbstractUnitFileTest
+import net.sjrx.intellij.plugins.systemdunitfiles.inspections.InvalidValueInspection
+import org.junit.Test
+
+class ConfigParseTasksMaxOptionValueTest : AbstractUnitFileTest() {
+
+    @Test
+    fun testValidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [Service]
+            TasksMax=infinity
+            TasksMax=1
+            TasksMax=512
+            TasksMax=999999999
+            TasksMax=0%
+            TasksMax=50%
+            TasksMax=99.9%
+            TasksMax=12.34%
+            TasksMax=100%
+            TasksMax=100.0%
+            TasksMax=100.00%
+        """.trimIndent()
+
+        setupFileInEditor("file.service", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(0, highlights)
+    }
+
+    @Test
+    fun testInvalidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [Service]
+            TasksMax=<error descr="Invalid value">0</error>
+            TasksMax=<error descr="Invalid value">-1</error>
+            TasksMax=<error descr="Invalid value">abc</error>
+            TasksMax=<error descr="Invalid value">100.5%</error>
+            TasksMax=<error descr="Invalid value">250%</error>
+            TasksMax=<error descr="Invalid value">50.123%</error>
+            TasksMax=<error descr="Invalid value">infinity 1</error>
+        """.trimIndent()
+
+        setupFileInEditor("file.service", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(7, highlights)
+    }
+}
diff --git a/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseTbfSizeOptionValueTest.kt b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseTbfSizeOptionValueTest.kt
new file mode 100644
index 0000000..f900d04
--- /dev/null
+++ b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseTbfSizeOptionValueTest.kt
@@ -0,0 +1,46 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.inspections.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.AbstractUnitFileTest
+import net.sjrx.intellij.plugins.systemdunitfiles.inspections.InvalidValueInspection
+import org.junit.Test
+
+class ConfigParseTbfSizeOptionValueTest : AbstractUnitFileTest() {
+
+    @Test
+    fun testValidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [TokenBucketFilter]
+            BurstBytes=1024
+            LimitBytes=64K
+            MTUBytes=1500
+            MPUBytes=64
+            BurstBytes=1M
+            LimitBytes=1G
+            MTUBytes=2T
+        """.trimIndent()
+
+        setupFileInEditor("file.network", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(0, highlights)
+    }
+
+    @Test
+    fun testInvalidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [TokenBucketFilter]
+            BurstBytes=<error descr="Invalid value">abc</error>
+            LimitBytes=<error descr="Invalid value">-1</error>
+            MTUBytes=<error descr="Invalid value">10X</error>
+        """.trimIndent()
+
+        setupFileInEditor("file.network", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(3, highlights)
+    }
+}
diff --git a/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseUnitSliceOptionValueTest.kt b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseUnitSliceOptionValueTest.kt
new file mode 100644
index 0000000..9c120e5
--- /dev/null
+++ b/src/test/kotlin/net/sjrx/intellij/plugins/systemdunitfiles/inspections/ai/ConfigParseUnitSliceOptionValueTest.kt
@@ -0,0 +1,49 @@
+package net.sjrx.intellij.plugins.systemdunitfiles.inspections.ai
+
+import net.sjrx.intellij.plugins.systemdunitfiles.AbstractUnitFileTest
+import net.sjrx.intellij.plugins.systemdunitfiles.inspections.InvalidValueInspection
+import org.junit.Test
+
+class ConfigParseUnitSliceOptionValueTest : AbstractUnitFileTest() {
+
+    @Test
+    fun testValidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [Service]
+            Slice=system.slice
+            Slice=user-1000.slice
+            Slice=user.slice
+            Slice=machine.slice
+            Slice=app-myapp.slice
+            Slice=-.slice
+            Slice=%p.slice
+            Slice=user-%i.slice
+            Slice=%n
+        """.trimIndent()
+
+        setupFileInEditor("file.service", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(0, highlights)
+    }
+
+    @Test
+    fun testInvalidValues() {
+        // language="unit file (systemd)"
+        val file = """
+            [Service]
+            Slice=<error descr="Invalid value">system.target</error>
+            Slice=<error descr="Invalid value">system.service</error>
+            Slice=<error descr="Invalid value">noextension</error>
+            Slice=<error descr="Invalid value">system.slice extra</error>
+        """.trimIndent()
+
+        setupFileInEditor("file.service", file)
+        enableInspection(InvalidValueInspection::class.java)
+        val highlights = myFixture.doHighlighting()
+
+        assertSize(4, highlights)
+    }
+}