From 217d5c392766572dd20b61df0117a3d8cddab46e Mon Sep 17 00:00:00 2001
From: Ulli Hafner <ullrich.hafner@gmail.com>
Date: Fri, 12 Jan 2024 16:23:53 +0100
Subject: [PATCH] Take care of uppercase characters on Windows.

---
 .../hm/hafner/analysis/FingerprintGenerator.java |  3 ++-
 .../analysis/FingerprintGeneratorTest.java       | 16 +++++++++-------
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/src/main/java/edu/hm/hafner/analysis/FingerprintGenerator.java b/src/main/java/edu/hm/hafner/analysis/FingerprintGenerator.java
index 9f7fd23f7..d9cbbd5d2 100644
--- a/src/main/java/edu/hm/hafner/analysis/FingerprintGenerator.java
+++ b/src/main/java/edu/hm/hafner/analysis/FingerprintGenerator.java
@@ -10,6 +10,7 @@
 import java.util.Set;
 
 import org.apache.commons.io.FilenameUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.builder.HashCodeBuilder;
 
 import edu.hm.hafner.util.FilteredLog;
@@ -52,7 +53,7 @@ public void run(final FullTextFingerprint algorithm, final Report report, final
     }
 
     private boolean hasAllowedExtension(final String fileName) {
-        return !NON_SOURCE_CODE_EXTENSIONS.contains(FilenameUtils.getExtension(fileName));
+        return !NON_SOURCE_CODE_EXTENSIONS.contains(StringUtils.lowerCase(FilenameUtils.getExtension(fileName)));
     }
 
     private int computeFingerprint(final Issue issue, final FullTextFingerprint algorithm, final Charset charset,
diff --git a/src/test/java/edu/hm/hafner/analysis/FingerprintGeneratorTest.java b/src/test/java/edu/hm/hafner/analysis/FingerprintGeneratorTest.java
index 5f8d5aa18..298d00e30 100644
--- a/src/test/java/edu/hm/hafner/analysis/FingerprintGeneratorTest.java
+++ b/src/test/java/edu/hm/hafner/analysis/FingerprintGeneratorTest.java
@@ -59,7 +59,7 @@ void shouldNotChangeIssuesWithFingerPrint() {
 
             String alreadySet = "already-set";
             report.add(issueBuilder.setFingerprint(alreadySet).setMessage(AFFECTED_FILE_NAME).build());
-            generator.run(createFullTextFingerprint("fingerprint-one.txt", "fingerprint-two.txt"),
+            generator.run(createFullTextFingerprint("fingerprint-two.txt"),
                     report, CHARSET_AFFECTED_FILE);
 
             assertThat(report.get(0).hasFingerprint()).isTrue();
@@ -86,7 +86,7 @@ void shouldSetDefaultFingerprintIfNoFileIsGiven() {
     void shouldAssignIdenticalFingerprint() {
         Report report = createTwoIssues();
         FingerprintGenerator generator = new FingerprintGenerator();
-        FullTextFingerprint fingerprint = createFullTextFingerprint("fingerprint-one.txt", "fingerprint-one.txt");
+        FullTextFingerprint fingerprint = createFullTextFingerprint("fingerprint-one.txt");
 
         generator.run(fingerprint, report, CHARSET_AFFECTED_FILE);
 
@@ -119,7 +119,7 @@ private FileSystem stubFileSystem(final String firstFile, final String secondFil
     void shouldAssignDifferentFingerprint() {
         Report report = createTwoIssues();
         FingerprintGenerator generator = new FingerprintGenerator();
-        FullTextFingerprint fingerprint = createFullTextFingerprint("fingerprint-one.txt", "fingerprint-two.txt");
+        FullTextFingerprint fingerprint = createFullTextFingerprint("fingerprint-two.txt");
 
         generator.run(fingerprint, report, CHARSET_AFFECTED_FILE);
 
@@ -143,12 +143,13 @@ void shouldUseFallbackFingerprintOnError(final String fileName) {
 
     @ParameterizedTest(name = "[{index}] Skip non source code file {0}")
     @ValueSource(strings = {"library.o", "program.exe", "library.dll", "program.so", "library.a", "program.lib",
-            "library.jar", "library.war", "program.zip", "library.7z", "program.tar.gz", "library.tar.bz2"})
+            "library.jar", "library.war", "program.zip", "library.7z", "program.tar.gz", "library.tar.bz2",
+            "UPPER_CASE.EXE"})
     void shouldUseFallbackFingerprintOnNonSourceFiles(final String fileName) {
         var report = createReportWithOneIssueFor(fileName);
 
         FingerprintGenerator generator = new FingerprintGenerator();
-        generator.run(createFullTextFingerprint("fingerprint-one.txt", "fingerprint-two.txt"),
+        generator.run(createFullTextFingerprint("fingerprint-two.txt"),
                 report, CHARSET_AFFECTED_FILE);
 
         assertThatIssueHasDefaultFingerprint(report);
@@ -167,8 +168,9 @@ private void assertThatIssueHasDefaultFingerprint(final Report report) {
         assertThat(report.get(0)).hasFingerprint(FingerprintGenerator.createDefaultFingerprint(report.get(0)));
     }
 
-    private FullTextFingerprint createFullTextFingerprint(final String firstFile, final String secondFile) {
-        FileSystem fileSystem = stubFileSystem(firstFile, secondFile);
+    private FullTextFingerprint createFullTextFingerprint(final String secondFile) {
+        FileSystem fileSystem = stubFileSystem("fingerprint-one.txt", secondFile);
+
         return new FullTextFingerprint(fileSystem);
     }