diff --git a/.gitignore b/.gitignore
index 0ec1b43c3..76a8c126f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,7 +17,6 @@ test/fixtures/multiroot/
 test/fixtures/**/*.dvi
 test/fixtures/**/*.log
 test/fixtures/**/*.synctex*
-test/fixtures/**/*.aux
 test/fixtures/**/*.fdb_latexmk
 test/fixtures/**/*.blg
 test/fixtures/**/*.out
diff --git a/src/core/cache.ts b/src/core/cache.ts
index 2e6c46fbd..bc6289da1 100644
--- a/src/core/cache.ts
+++ b/src/core/cache.ts
@@ -43,11 +43,10 @@ export const cache = {
     refreshCacheAggressive,
     loadFlsFile,
     _test: {
+        caches,
         canCache,
         isExcluded,
-        updateChildren,
-        updateAST,
-        updateElements
+        updateAST
     }
 }
 
@@ -590,9 +589,9 @@ async function loadFlsFile(filePath: string): Promise<void> {
 
     for (const outputFile of ioFiles.output) {
         if (path.extname(outputFile) === '.aux' && await lw.file.exists(outputFile)) {
-            logger.log(`Found .aux ${filePath} from .fls ${flsPath} , parsing.`)
+            logger.log(`Found .aux ${outputFile} from .fls ${flsPath} , parsing.`)
             await parseAuxFile(outputFile, path.dirname(outputFile).replace(outDir, rootDir))
-            logger.log(`Parsed .aux ${filePath} .`)
+            logger.log(`Parsed .aux ${outputFile} .`)
         }
     }
     logger.log(`Parsed .fls ${flsPath} .`)
@@ -703,10 +702,12 @@ async function parseAuxFile(filePath: string, srcDir: string) {
  * bibliography files. Defaults to the root file path if not provided.
  * @param {string[]} [includedBib=[]] - An array to accumulate the bibliography
  * files found.
+ * @param {string[]} [checkedTeX=[]] - An array to store the paths of TeX files
+ * already checked.
  * @returns {string[]} - An array of unique bibliography file paths included in
  * the specified file and its children.
  */
-function getIncludedBib(filePath?: string, includedBib: string[] = []): string[] {
+function getIncludedBib(filePath?: string, includedBib: string[] = [], checkedTeX: string[] = []): string[] {
     filePath = filePath ?? lw.root.file.path
     if (filePath === undefined) {
         return []
@@ -715,14 +716,14 @@ function getIncludedBib(filePath?: string, includedBib: string[] = []): string[]
     if (fileCache === undefined) {
         return []
     }
-    const checkedTeX = [ filePath ]
+    checkedTeX.push(filePath)
     includedBib.push(...fileCache.bibfiles)
     for (const child of fileCache.children) {
         if (checkedTeX.includes(child.filePath)) {
             // Already parsed
             continue
         }
-        getIncludedBib(child.filePath, includedBib)
+        getIncludedBib(child.filePath, includedBib, checkedTeX)
     }
     // Make sure to return an array with unique entries
     return Array.from(new Set(includedBib))
@@ -765,7 +766,7 @@ function getIncludedTeX(filePath?: string, includedTeX: string[] = [], cachedOnl
         }
         getIncludedTeX(child.filePath, includedTeX, cachedOnly)
     }
-    return includedTeX
+    return Array.from(new Set(includedTeX))
 }
 
 /**
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/another.tex b/test/fixtures/unittest/03_core_cache/included_bib/another.tex
new file mode 100644
index 000000000..1629f02ad
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_bib/another.tex
@@ -0,0 +1 @@
+\input{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/circular_1.tex b/test/fixtures/unittest/03_core_cache/included_bib/circular_1.tex
new file mode 100644
index 000000000..885ed70db
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_bib/circular_1.tex
@@ -0,0 +1 @@
+\input{circular_2}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/circular_2.tex b/test/fixtures/unittest/03_core_cache/included_bib/circular_2.tex
new file mode 100644
index 000000000..6d470e612
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_bib/circular_2.tex
@@ -0,0 +1,2 @@
+\input{circular_1}
+\bibliography{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/duplicate_1.tex b/test/fixtures/unittest/03_core_cache/included_bib/duplicate_1.tex
new file mode 100644
index 000000000..221fbd635
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_bib/duplicate_1.tex
@@ -0,0 +1,2 @@
+\input{duplicate_2}
+\bibliography{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/duplicate_2.tex b/test/fixtures/unittest/03_core_cache/included_bib/duplicate_2.tex
new file mode 100644
index 000000000..dfcb23ccb
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_bib/duplicate_2.tex
@@ -0,0 +1 @@
+\bibliography{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/main.bib b/test/fixtures/unittest/03_core_cache/included_bib/main.bib
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/fixtures/unittest/03_core_cache/included_bib/main.tex b/test/fixtures/unittest/03_core_cache/included_bib/main.tex
new file mode 100644
index 000000000..dfcb23ccb
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_bib/main.tex
@@ -0,0 +1 @@
+\bibliography{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_tex/another.tex b/test/fixtures/unittest/03_core_cache/included_tex/another.tex
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/fixtures/unittest/03_core_cache/included_tex/circular_1.tex b/test/fixtures/unittest/03_core_cache/included_tex/circular_1.tex
new file mode 100644
index 000000000..885ed70db
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_tex/circular_1.tex
@@ -0,0 +1 @@
+\input{circular_2}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_tex/circular_2.tex b/test/fixtures/unittest/03_core_cache/included_tex/circular_2.tex
new file mode 100644
index 000000000..100ca310a
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_tex/circular_2.tex
@@ -0,0 +1 @@
+\input{circular_1}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_tex/duplicate_1.tex b/test/fixtures/unittest/03_core_cache/included_tex/duplicate_1.tex
new file mode 100644
index 000000000..8172548dd
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_tex/duplicate_1.tex
@@ -0,0 +1,2 @@
+\input{duplicate_2}
+\input{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_tex/duplicate_2.tex b/test/fixtures/unittest/03_core_cache/included_tex/duplicate_2.tex
new file mode 100644
index 000000000..1629f02ad
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_tex/duplicate_2.tex
@@ -0,0 +1 @@
+\input{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/included_tex/main.tex b/test/fixtures/unittest/03_core_cache/included_tex/main.tex
new file mode 100644
index 000000000..ca5fd699c
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/included_tex/main.tex
@@ -0,0 +1 @@
+\input{another}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/main.aux b/test/fixtures/unittest/03_core_cache/load_aux_file/main.aux
new file mode 100644
index 000000000..fcd4e7120
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/load_aux_file/main.aux
@@ -0,0 +1 @@
+\bibdata{main}
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/main.bib b/test/fixtures/unittest/03_core_cache/load_aux_file/main.bib
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/main.fls b/test/fixtures/unittest/03_core_cache/load_aux_file/main.fls
new file mode 100644
index 000000000..ae44b0e89
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/load_aux_file/main.fls
@@ -0,0 +1 @@
+OUTPUT ./main.aux
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/main.tex b/test/fixtures/unittest/03_core_cache/load_aux_file/main.tex
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.aux b/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.aux
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.fls b/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.fls
new file mode 100644
index 000000000..4ad77f7fb
--- /dev/null
+++ b/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.fls
@@ -0,0 +1 @@
+OUTPUT ./nothing.aux
\ No newline at end of file
diff --git a/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.tex b/test/fixtures/unittest/03_core_cache/load_aux_file/nothing.tex
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/fixtures/unittest/03_core_cache/load_fls_file/main.aux b/test/fixtures/unittest/03_core_cache/load_fls_file/main.aux
new file mode 100644
index 000000000..e69de29bb
diff --git a/test/units/03_core_cache.test.ts b/test/units/03_core_cache.test.ts
index 9342f8da1..0b785a2c0 100644
--- a/test/units/03_core_cache.test.ts
+++ b/test/units/03_core_cache.test.ts
@@ -607,4 +607,121 @@ describe(path.basename(__filename).split('.')[0] + ':', () => {
             assert.ok(!lw.watcher.src.has(getPath(fixture, 'load_fls_file', 'main.out')))
         })
     })
+
+    describe('lw.cache.parseAuxFile', () => {
+        it('should do nothing if no \\bibdata is found', async () => {
+            const toParse = getPath(fixture, 'load_aux_file', 'nothing.tex')
+            setRoot(fixture, 'load_aux_file', 'nothing.tex')
+            await lw.cache.refreshCache(toParse)
+            await lw.cache.loadFlsFile(toParse)
+            assert.strictEqual(lw.cache.get(toParse)?.bibfiles.size, 0)
+        })
+
+        it('should add \\bibdata from .aux file', async () => {
+            const toParse = getPath(fixture, 'load_aux_file', 'main.tex')
+            setRoot(fixture, 'load_aux_file', 'main.tex')
+            await lw.cache.refreshCache(toParse)
+            await lw.cache.loadFlsFile(toParse)
+            assert.strictEqual(lw.cache.get(toParse)?.bibfiles.size, 1)
+        })
+
+        it('should not add \\bibdata if the bib is excluded', async () => {
+            await setConfig('latex.watch.files.ignore', ['**/main.bib'])
+            const toParse = getPath(fixture, 'load_aux_file', 'main.tex')
+            setRoot(fixture, 'load_aux_file', 'main.tex')
+            await lw.cache.refreshCache(toParse)
+            await lw.cache.loadFlsFile(toParse)
+            assert.strictEqual(lw.cache.get(toParse)?.bibfiles.size, 0)
+        })
+
+        it('should watch bib files if added', async () => {
+            const toParse = getPath(fixture, 'load_aux_file', 'main.tex')
+            setRoot(fixture, 'load_aux_file', 'main.tex')
+            await lw.cache.refreshCache(toParse)
+            await lw.cache.loadFlsFile(toParse)
+            assert.ok(lw.watcher.bib.has(getPath(fixture, 'load_aux_file', 'main.bib')))
+        })
+    })
+
+    describe('lw.cache.getIncludedBib', () => {
+        it('should return an empty list if no file path is given', () => {
+            assert.strictEqual(lw.cache.getIncludedBib().length, 0)
+        })
+
+        it('should return an empty list if the given file is not cached', () => {
+            const toParse = getPath(fixture, 'included_bib', 'main.tex')
+            assert.strictEqual(lw.cache.getIncludedBib(toParse).length, 0)
+        })
+
+        it('should return a list of included .bib files', async () => {
+            const toParse = getPath(fixture, 'included_bib', 'main.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedBib(toParse).length, 1)
+        })
+
+        it('should return a list of included .bib files with \\input', async () => {
+            const toParse = getPath(fixture, 'included_bib', 'another.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedBib(toParse).length, 1)
+        })
+
+        it('should return a list of included .bib files with circular inclusions', async () => {
+            const toParse = getPath(fixture, 'included_bib', 'circular_1.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedBib(toParse).length, 1)
+        })
+
+        it('should return a list of de-duplicated .bib files', async () => {
+            const toParse = getPath(fixture, 'included_bib', 'duplicate_1.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedBib(toParse).length, 1)
+        })
+    })
+
+    describe('lw.cache.getIncludedTeX', () => {
+        it('should return an empty list if no file path is given', () => {
+            assert.strictEqual(lw.cache.getIncludedTeX().length, 0)
+        })
+
+        it('should return an empty list if the given file is not cached', () => {
+            const toParse = getPath(fixture, 'included_tex', 'main.tex')
+            assert.strictEqual(lw.cache.getIncludedTeX(toParse).length, 0)
+        })
+
+        it('should return a list of included .tex files', async () => {
+            const toParse = getPath(fixture, 'included_tex', 'main.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedTeX(toParse).length, 2)
+        })
+
+        it('should return a list of included .tex files, but only cached ones with `cachedOnly` flag', async () => {
+            const toParse = getPath(fixture, 'included_tex', 'main.tex')
+            await lw.cache.refreshCache(toParse)
+            lw.cache._test.caches.delete(getPath(fixture, 'included_tex', 'another.tex'))
+            assert.strictEqual(lw.cache.getIncludedTeX(toParse, [], true).length, 1)
+        })
+
+        it('should return a list of included .bib files with circular inclusions', async () => {
+            const toParse = getPath(fixture, 'included_tex', 'circular_1.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedTeX(toParse).length, 2)
+        })
+
+        it('should return a list of de-duplicated .tex files', async () => {
+            const toParse = getPath(fixture, 'included_tex', 'duplicate_1.tex')
+            await lw.cache.refreshCache(toParse)
+            assert.strictEqual(lw.cache.getIncludedTeX(toParse).length, 3)
+        })
+    })
+
+    describe('lw.cache.getFlsChildren', () => {
+        it('should return an empty list if no .fls is found', async () => {
+            assert.strictEqual((await lw.cache.getFlsChildren(texPathAnother)).length, 0)
+        })
+
+        it('should return a list of input files in the .fls file', async () => {
+            const toParse = getPath(fixture, 'load_fls_file', 'include_main.tex')
+            assert.strictEqual((await lw.cache.getFlsChildren(toParse)).length, 1)
+        })
+    })
 })