Added unit tests

mxweaver · May 10, 2024 · cd25cf0 · cd25cf0
1 parent 771be91
commit cd25cf0
Showing 1 changed file with 159 additions and 0 deletions.
diff --git a/__tests__/lib.test.js b/__tests__/lib.test.js
@@ -15,4 +15,163 @@ describe('diff', () => {
 
     expect(changes).toEqual({});
   });
+
+  it('returns the correct old versions for each dependency', () => {
+    const oldLock = {
+      dependencies: {
+        'a': { version: '0.0.1' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.3' },
+      },
+    };
+
+    const newLock = {
+      dependencies: {},
+    };
+
+    const changes = diff(oldLock, newLock);
+
+    expect(changes).toEqual({
+      'a': ['0.0.1', null],
+      'b': ['0.0.2', null],
+      'c': ['0.0.3', null],
+    });
+  });
+
+  it('returns the correct new versions for each dependency', () => {
+    const oldLock = {
+      dependencies: {},
+    };
+
+    const newLock = {
+      dependencies: {
+        'a': { version: '0.0.1' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.3' },
+      },
+    };
+
+    const changes = diff(oldLock, newLock);
+
+    expect(changes).toEqual({
+      'a': [null, '0.0.1'],
+      'b': [null, '0.0.2'],
+      'c': [null, '0.0.3'],
+    });
+  });
+
+  it('returns the new and old versions for each dependency', () => {
+    const oldLock = {
+      dependencies: {
+        'a': { version: '0.0.1' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.3' },
+      },
+    };
+
+    const newLock = {
+      dependencies: {
+        'a': { version: '0.0.4' },
+        'b': { version: '0.0.5' },
+        'c': { version: '0.0.6' },
+      },
+    };
+
+    const changes = diff(oldLock, newLock);
+
+    expect(changes).toEqual({
+      'a': ['0.0.1', '0.0.4'],
+      'b': ['0.0.2', '0.0.5'],
+      'c': ['0.0.3', '0.0.6'],
+    });
+  });
+
+  it('returns an entry for each added dependencies', () => {
+    const oldLock = {
+      dependencies: {
+        'a': { version: '0.0.1' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.3' },
+      },
+    };
+
+    const newLock = {
+      dependencies: {
+        'a': { version: '0.0.4' },
+        'b': { version: '0.0.5' },
+        'c': { version: '0.0.6' },
+        'd': { version: '0.0.7' },
+        'e': { version: '0.0.8' },
+        'f': { version: '0.0.9' },
+      },
+    };
+
+    const changes = diff(oldLock, newLock);
+
+    expect(changes).toEqual({
+      'a': ['0.0.1', '0.0.4'],
+      'b': ['0.0.2', '0.0.5'],
+      'c': ['0.0.3', '0.0.6'],
+      'd': [null, '0.0.7'],
+      'e': [null, '0.0.8'],
+      'f': [null, '0.0.9'],
+    });
+  });
+
+  it('returns an entry for each removed dependencies', () => {
+    const oldLock = {
+      dependencies: {
+        'a': { version: '0.0.1' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.3' },
+        'd': { version: '0.0.4' },
+        'e': { version: '0.0.5' },
+        'f': { version: '0.0.6' },
+      },
+    };
+
+    const newLock = {
+      dependencies: {
+        'a': { version: '0.0.7' },
+        'b': { version: '0.0.8' },
+        'c': { version: '0.0.9' },
+      },
+    };
+
+    const changes = diff(oldLock, newLock);
+
+    expect(changes).toEqual({
+      'a': ['0.0.1', '0.0.7'],
+      'b': ['0.0.2', '0.0.8'],
+      'c': ['0.0.3', '0.0.9'],
+      'd': ['0.0.4', null],
+      'e': ['0.0.5', null],
+      'f': ['0.0.6', null],
+    });
+  });
+
+  it('skips dependencies that did not change', () => {
+    const oldLock = {
+      dependencies: {
+        'a': { version: '0.0.1' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.3' },
+      },
+    };
+
+    const newLock = {
+      dependencies: {
+        'a': { version: '0.0.4' },
+        'b': { version: '0.0.2' },
+        'c': { version: '0.0.6' },
+      },
+    };
+
+    const changes = diff(oldLock, newLock);
+
+    expect(changes).toEqual({
+      'a': ['0.0.1', '0.0.4'],
+      'c': ['0.0.3', '0.0.6'],
+    });
+  });
 });