diff --git a/tests/boundary/providers/native/nativePlistTextSource.test.ts b/tests/boundary/providers/native/nativePlistTextSource.test.ts
index bab6753811..b16898cd5c 100644
--- a/tests/boundary/providers/native/nativePlistTextSource.test.ts
+++ b/tests/boundary/providers/native/nativePlistTextSource.test.ts
@@ -66,14 +66,14 @@ it.for<TextSourceCase>([
   },
   {
     name: "unknown XML scalar",
-    bytes: Buffer.from("<plist><integer> 42 </integer></plist>"),
+    bytes: Buffer.from("<plist><real>1e999</real></plist>"),
     description: "XML 1.0 document text",
     format: "xml",
     value: {
       $plist_type: "unknown",
-      element: "integer",
-      literal: " 42 ",
-      reason: "invalid-literal",
+      element: "real",
+      literal: "1e999",
+      reason: "unrepresentable",
     },
     limitations: [
       expect.stringContaining("1 XML scalar value(s) could not be established"),
@@ -164,7 +164,14 @@ it.for<TextSourceCase>([
         const conversion = fixture.conversions[conversionIndex++];
         if (conversion === undefined)
           throw new Error("Unexpected conversion of directly supported source");
-        expect(args[1]).toBe(conversion.format);
+        expect(args).toEqual([
+          "-convert",
+          conversion.format,
+          "-o",
+          "-",
+          "--",
+          path,
+        ]);
         return ok({
           ...result.value,
           stdout: conversion.output,
diff --git a/tests/boundary/providers/native/plistSourceFormat.test.ts b/tests/boundary/providers/native/plistSourceFormat.test.ts
index bdfd6d8519..54d74b570b 100644
--- a/tests/boundary/providers/native/plistSourceFormat.test.ts
+++ b/tests/boundary/providers/native/plistSourceFormat.test.ts
@@ -27,6 +27,7 @@ const DATA = { $plist_type: "data", base64: "3q2+7w==" };
 
 class PlistSourceRunner extends NativeFixtureRunner {
   constructor(
+    private readonly path: string,
     description: string,
     private readonly xmlFallback: boolean,
     private readonly convertedXml: string = XML,
@@ -36,8 +37,23 @@ class PlistSourceRunner extends NativeFixtureRunner {
 
   override async run(tool: string, arguments_: readonly string[]) {
     const result = await super.run(tool, arguments_);
-    if (!result.ok || tool !== "plutil" || !this.xmlFallback) return result;
-    const json = arguments_.includes("json");
+    if (!result.ok || tool !== "plutil") return result;
+    if (arguments_[0] === "-lint") {
+      expect(arguments_).toEqual(["-lint", "--", this.path]);
+      return ok({ ...result.value, stdout: "", stdoutBytes: 0 });
+    }
+    const format = arguments_[1];
+    expect(["json", "xml1"]).toContain(format);
+    expect(arguments_).toEqual([
+      "-convert",
+      format,
+      "-o",
+      "-",
+      "--",
+      this.path,
+    ]);
+    if (!this.xmlFallback) return result;
+    const json = format === "json";
     const stdout = json ? "" : this.convertedXml;
     return ok({
       ...result.value,
@@ -87,7 +103,7 @@ it.for<PlistSourceCase>([
     contents: ` \n${XML}`,
     expected: "xml",
     xmlFallback: true,
-    expectedTools: ["file"],
+    expectedTools: ["file", "plutil"],
     expectedLimitations: [],
   },
   {
@@ -95,7 +111,7 @@ it.for<PlistSourceCase>([
     contents: `<!-- source plist -->\n${XML}`,
     expected: "xml",
     xmlFallback: true,
-    expectedTools: ["file"],
+    expectedTools: ["file", "plutil"],
     expectedLimitations: [],
   },
   ...[false, true].map((bigEndian) => ({
@@ -105,7 +121,7 @@ it.for<PlistSourceCase>([
       : Buffer.from(`\uFEFF${XML}`, "utf16le"),
     expected: "xml",
     xmlFallback: true,
-    expectedTools: ["file"],
+    expectedTools: ["file", "plutil"],
     expectedLimitations: [],
   })),
   { description: "ASCII text\n", expected: "unknown", xmlFallback: true },
@@ -120,7 +136,7 @@ it.for<PlistSourceCase>([
     expected: "xml",
     xmlFallback: false,
     expectedValue: { ...VALUE, Blob: DATA },
-    expectedTools: ["file"],
+    expectedTools: ["file", "plutil"],
   },
   {
     description:
@@ -128,7 +144,7 @@ it.for<PlistSourceCase>([
     contents: Buffer.from("\uFEFF" + XML, "utf16le").swap16(),
     expected: "xml",
     xmlFallback: true,
-    expectedTools: ["file"],
+    expectedTools: ["file", "plutil"],
     expectedLimitations: [],
   },
   {
@@ -162,7 +178,7 @@ it.for<PlistSourceCase>([
     xmlFallback: true,
     convertedXml:
       "<plist><dict><key>nel</key><string>a\u0085b</string><key>ls</key><string>a\u2028b</string><key>ps</key><string>a\u2029b</string><key>lf</key><string>a\nb</string><key>payload</key><data>AA==</data></dict></plist>",
-    expectedTools: ["file"],
+    expectedTools: ["file", "plutil"],
     expectedLimitations: [],
     expectedValue: {
       nel: "a\u0085b",
@@ -192,7 +208,7 @@ it.for<PlistSourceCase>([
     await writeFile(path, contents);
     const client = new NativeMacOSProvider(
       {},
-      new PlistSourceRunner(description, xmlFallback, convertedXml),
+      new PlistSourceRunner(path, description, xmlFallback, convertedXml),
       "darwin",
     ).createClient(nativeMachoTarget(join(root, "target")));
     onTestFinished(async () => {