Add semver tests (#549)

Author: KeoFoxy

internal/semver/version_range_test.go

@@ -40,9 +40,18 @@ func TestWildcardsHaveSameString(t *testing.T) {
 		"1.2.X",
 	}
 
+	mixedCaseWildcardStrings := []string{
+		"x",
+		"X",
+		"*",
+		"x.X.x",
+		"X.x.*",
+	}
+
 	assertAllVersionRangesHaveIdenticalStrings(t, "majorWildcardStrings", majorWildcardStrings)
 	assertAllVersionRangesHaveIdenticalStrings(t, "minorWildcardStrings", minorWildcardStrings)
 	assertAllVersionRangesHaveIdenticalStrings(t, "patchWildcardStrings", patchWildcardStrings)
+	assertAllVersionRangesHaveIdenticalStrings(t, "mixedCaseWildcardStrings", mixedCaseWildcardStrings)
 }
 
 func assertAllVersionRangesHaveIdenticalStrings(t *testing.T, name string, strs []string) {

internal/semver/version_test.go

@@ -119,6 +119,11 @@ func TestVersionCompare(t *testing.T) {
 		{"1.0.0+build.stuff", "1.0.0", comparisonEqualTo},
 		{"1.0.0", "1.0.0+build", comparisonEqualTo},
 		{"1.0.0+build", "1.0.0+stuff", comparisonEqualTo},
+
+		// https://semver.org/#spec-item-11
+		// Edge cases for numeric and lexical comparison of prerelease identifiers.
+		{"1.0.0-alpha.99999", "1.0.0-alpha.100000", comparisonLessThan},
+		{"1.0.0-alpha.beta", "1.0.0-alpha.alpha", comparisonGreaterThan},
 	}
 
 	for _, test := range tests {