Adding case sensitive exclude rules support

Signed-off-by: Maciej "Iwan" Iwanowski <maciej.iwanowski@critical.today>

pkg/result/processors/exclude_rules.go

@@ -118,3 +118,36 @@ func (ExcludeRules) Name() string { return "exclude-rules" }
 func (ExcludeRules) Finish()      {}
 
 var _ Processor = ExcludeRules{}
+
+type ExcludeRulesCaseSensitive struct {
+	*ExcludeRules
+}
+
+func NewExcludeRulesCaseSensitive(rules []ExcludeRule, lineCache *fsutils.LineCache, log logutils.Log) *ExcludeRulesCaseSensitive {
+	r := &ExcludeRules{
+		lineCache: lineCache,
+		log:       log,
+	}
+
+	for _, rule := range rules {
+		parsedRule := excludeRule{
+			linters: rule.Linters,
+		}
+		if rule.Text != "" {
+			parsedRule.text = regexp.MustCompile(rule.Text)
+		}
+		if rule.Source != "" {
+			parsedRule.source = regexp.MustCompile(rule.Source)
+		}
+		if rule.Path != "" {
+			parsedRule.path = regexp.MustCompile(rule.Path)
+		}
+		r.rules = append(r.rules, parsedRule)
+	}
+
+	return &ExcludeRulesCaseSensitive{r}
+}
+
+func (ExcludeRulesCaseSensitive) Name() string { return "exclude-rules-case-sensitive" }
+
+var _ Processor = ExcludeCaseSensitive{}

pkg/result/processors/exclude_rules_test.go

@@ -31,26 +31,12 @@ func TestExcludeRulesMultiple(t *testing.T) {
 			Linters: []string{"lll"},
 		},
 	}, lineCache, nil)
-	type issueCase struct {
-		Path   string
-		Line   int
-		Text   string
-		Linter string
-	}
-	var newIssueCase = func(c issueCase) result.Issue {
-		return result.Issue{
-			Text:       c.Text,
-			FromLinter: c.Linter,
-			Pos: token.Position{
-				Filename: c.Path,
-				Line:     c.Line,
-			},
-		}
-	}
+
 	cases := []issueCase{
 		{Path: "e.go", Text: "exclude", Linter: "linter"},
 		{Path: "e.go", Text: "some", Linter: "linter"},
 		{Path: "e_test.go", Text: "normal", Linter: "testlinter"},
+		{Path: "e_Test.go", Text: "normal", Linter: "testlinter"},
 		{Path: "e_test.go", Text: "another", Linter: "linter"},
 		{Path: "e_test.go", Text: "testonly", Linter: "linter"},
 		{Path: filepath.Join("testdata", "exclude_rules.go"), Line: 3, Linter: "lll"},
@@ -71,11 +57,30 @@ func TestExcludeRulesMultiple(t *testing.T) {
 	}
 	expectedCases := []issueCase{
 		{Path: "e.go", Text: "some", Linter: "linter"},
+		{Path: "e_Test.go", Text: "normal", Linter: "testlinter"},
 		{Path: "e_test.go", Text: "another", Linter: "linter"},
 	}
 	assert.Equal(t, expectedCases, resultingCases)
 }
 
+type issueCase struct {
+	Path   string
+	Line   int
+	Text   string
+	Linter string
+}
+
+func newIssueCase(c issueCase) result.Issue {
+	return result.Issue{
+		Text:       c.Text,
+		FromLinter: c.Linter,
+		Pos: token.Position{
+			Filename: c.Path,
+			Line:     c.Line,
+		},
+	}
+}
+
 func TestExcludeRulesText(t *testing.T) {
 	p := NewExcludeRules([]ExcludeRule{
 		{
@@ -103,6 +108,96 @@ func TestExcludeRulesText(t *testing.T) {
 	}
 	assert.Equal(t, texts[1:], processedTexts)
 }
+
 func TestExcludeRulesEmpty(t *testing.T) {
 	processAssertSame(t, NewExcludeRules(nil, nil, nil), newTextIssue("test"))
 }
+
+func TestExcludeRulesCaseSensitiveMultiple(t *testing.T) {
+	lineCache := fsutils.NewLineCache(fsutils.NewFileCache())
+	p := NewExcludeRulesCaseSensitive([]ExcludeRule{
+		{
+			Text:    "^exclude$",
+			Linters: []string{"linter"},
+		},
+		{
+			Linters: []string{"testlinter"},
+			Path:    `_test\.go`,
+		},
+		{
+			Text: "^testonly$",
+			Path: `_test\.go`,
+		},
+		{
+			Source:  "^//go:generate ",
+			Linters: []string{"lll"},
+		},
+	}, lineCache, nil)
+
+	cases := []issueCase{
+		{Path: "e.go", Text: "exclude", Linter: "linter"},
+		{Path: "e.go", Text: "excLude", Linter: "linter"},
+		{Path: "e.go", Text: "some", Linter: "linter"},
+		{Path: "e_test.go", Text: "normal", Linter: "testlinter"},
+		{Path: "e_Test.go", Text: "normal", Linter: "testlinter"},
+		{Path: "e_test.go", Text: "another", Linter: "linter"},
+		{Path: "e_test.go", Text: "testonly", Linter: "linter"},
+		{Path: "e_test.go", Text: "testOnly", Linter: "linter"},
+		{Path: filepath.Join("testdata", "exclude_rules_case_sensitive.go"), Line: 3, Linter: "lll"},
+	}
+	var issues []result.Issue
+	for _, c := range cases {
+		issues = append(issues, newIssueCase(c))
+	}
+	processedIssues := process(t, p, issues...)
+	var resultingCases []issueCase
+	for _, i := range processedIssues {
+		resultingCases = append(resultingCases, issueCase{
+			Path:   i.FilePath(),
+			Linter: i.FromLinter,
+			Text:   i.Text,
+			Line:   i.Line(),
+		})
+	}
+	expectedCases := []issueCase{
+		{Path: "e.go", Text: "excLude", Linter: "linter"},
+		{Path: "e.go", Text: "some", Linter: "linter"},
+		{Path: "e_Test.go", Text: "normal", Linter: "testlinter"},
+		{Path: "e_test.go", Text: "another", Linter: "linter"},
+		{Path: "e_test.go", Text: "testOnly", Linter: "linter"},
+		{Path: filepath.Join("testdata", "exclude_rules_case_sensitive.go"), Line: 3, Linter: "lll"},
+	}
+	assert.Equal(t, expectedCases, resultingCases)
+}
+
+func TestExcludeRulesCaseSensitiveText(t *testing.T) {
+	p := NewExcludeRulesCaseSensitive([]ExcludeRule{
+		{
+			Text: "^exclude$",
+			Linters: []string{
+				"linter",
+			},
+		},
+	}, nil, nil)
+	texts := []string{"exclude", "excLude", "1", "", "exclud", "notexclude"}
+	var issues []result.Issue
+	for _, t := range texts {
+		issues = append(issues, result.Issue{
+			Text:       t,
+			FromLinter: "linter",
+		})
+	}
+
+	processedIssues := process(t, p, issues...)
+	assert.Len(t, processedIssues, len(issues)-1)
+
+	var processedTexts []string
+	for _, i := range processedIssues {
+		processedTexts = append(processedTexts, i.Text)
+	}
+	assert.Equal(t, texts[1:], processedTexts)
+}
+
+func TestExcludeRulesCaseSensitiveEmpty(t *testing.T) {
+	processAssertSame(t, NewExcludeRulesCaseSensitive(nil, nil, nil), newTextIssue("test"))
+}

pkg/result/processors/testdata/exclude_rules_case_sensitive.go

@@ -0,0 +1,3 @@
+package testdata
+
+//GO:generate long line that will be excluded by default processor but will not be affected by case-sensitive one because of capital GO