Release v0.1.2

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.1.2] - 2022-03-01
+### Fixed
+- Fix a bug where a single line would cause a panic
+
 ## [0.1.1] - 2022-02-09
 ### Fixed
 - Don't consider empty files to have any lines
@@ -39,7 +43,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - First functional version
 
-[Unreleased]: https://github.com/SmartBear/lhdiff/compare/v0.1.1...HEAD
+[Unreleased]: https://github.com/SmartBear/lhdiff/compare/v0.1.2...HEAD
+[0.1.2]: https://github.com/SmartBear/lhdiff/compare/v0.1.1...v0.1.2
 [0.1.1]: https://github.com/SmartBear/lhdiff/compare/v0.1.0...v0.1.1
 [0.1.0]: https://github.com/SmartBear/lhdiff/compare/v0.0.5...v0.1.0
 [0.0.5]: https://github.com/SmartBear/lhdiff/compare/v0.0.4...v0.0.5

lhdiff_test.go

@@ -88,6 +88,33 @@ four`
 	// 3,3
 }
 
+func ExampleLhdiff_oneDifferentLineWithNewLine() {
+	left := "a\n"
+	right := "b\n"
+	mappings, err := Lhdiff(left, right, 4, true)
+	printErr(err)
+	err = PrintMappings(mappings)
+	printErr(err)
+
+	// Output:
+	// 1,_
+	// 2,2
+	// _,1
+}
+
+func ExampleLhdiff_oneModifiedLineWithNewLine() {
+	left := "a b c d\n"
+	right := "a b c d e\n"
+	mappings, err := Lhdiff(left, right, 4, true)
+	printErr(err)
+	err = PrintMappings(mappings)
+	printErr(err)
+
+	// Output:
+	// 1,1
+	// 2,2
+}
+
 func ExampleLhdiff_withEmptyLeft() {
 	right := `one
 two

tfidf_cosine_similarity.go

@@ -20,6 +20,9 @@ func TfIdfCosineSimilarity(docA string, docB string) float64 {
 	)
 	allTokens = append(allTokens, tokensA...)
 	allTokens = append(allTokens, tokensB...)
+	if len(allTokens) == 0 {
+		return 1
+	}
 	var documentFrequency = map[string]int{}
 	for _, token := range allTokens {
 		if documentFrequency[token] == 0 {