From 95ba045a694be4b3a892b0eae4a1b01baf87df2d Mon Sep 17 00:00:00 2001
From: Lovell Fuller <github@lovell.info>
Date: Mon, 11 Dec 2023 21:14:40 +0000
Subject: [PATCH] Tests: improve yarn locator coverage

---
 lib/libvips.js       |  1 -
 test/unit/libvips.js | 23 +++++++++++++++++------
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/lib/libvips.js b/lib/libvips.js
index 6376e217..a76c9b46 100644
--- a/lib/libvips.js
+++ b/lib/libvips.js
@@ -106,7 +106,6 @@ const yarnLocator = () => {
     const npmVersion = semverCoerce(optionalDependencies[`@img/sharp-libvips-${buildPlatformArch()}`]).version;
     return sha512(`${identHash}npm:${npmVersion}`).slice(0, 10);
   } catch {}
-  /* istanbul ignore next */
   return '';
 };
 
diff --git a/test/unit/libvips.js b/test/unit/libvips.js
index d18af852..dee38d17 100644
--- a/test/unit/libvips.js
+++ b/test/unit/libvips.js
@@ -145,11 +145,22 @@ describe('libvips binaries', function () {
     });
   });
 
-  it('yarn locator hash', () => {
-    const locatorHash = libvips.yarnLocator();
-    if (locatorHash.length) {
-      assert.strict(locatorHash.length, 10);
-      assert.strict(/[a-f0-9]{10}/.test(locatorHash));
-    }
+  describe('yarn locator hash', () => {
+    it('known platform', () => {
+      process.env.npm_config_platform = 'linux';
+      process.env.npm_config_arch = 's390x';
+      const locatorHash = libvips.yarnLocator();
+      assert.strictEqual(locatorHash, '86cc8ee6e4');
+      delete process.env.npm_config_platform;
+      delete process.env.npm_config_arch;
+    });
+    it('unknown platform', () => {
+      process.env.npm_config_platform = 'unknown-platform';
+      process.env.npm_config_arch = 'unknown-arch';
+      const locatorHash = libvips.yarnLocator();
+      assert.strictEqual(locatorHash, '');
+      delete process.env.npm_config_platform;
+      delete process.env.npm_config_arch;
+    });
   });
 });