Add config file finder.

editorconfig/config_file_finder_test.go

@@ -0,0 +1,34 @@
+package editorconfig
+
+import (
+	"strconv"
+	"testing"
+)
+
+func TestGetConfigFilePathInDirectoryForNonRootPath(t *testing.T) {
+	if GetConfigFilePathInDirectory("/home/x") != "/home/x/.editorconfig" {
+		t.Error("GetConfigFilePathInDirectory failed for path /home/x")
+	}
+}
+
+func TestGetConfigFilePathInDirectoryForRootPath(t *testing.T) {
+	if GetConfigFilePathInDirectory("/") != "/.editorconfig" {
+		t.Error("GetConfigFilePathInDirectory failed for path /")
+	}
+}
+
+func TestFindConfigFilesWhenDirectoryHasRootConfig(t *testing.T) {
+	files := FindConfigFiles([]string{"tests/a/b/has-root-config/file.java"})
+
+	if len(files) != 1 {
+		t.Error("Should have found 1 .editorconfig file but found " + strconv.Itoa(len(files)))
+	}
+}
+
+func TestFindConfigFilesFindsRootConfigInParentDirectory(t *testing.T) {
+	files := FindConfigFiles([]string{"tests/a/b/c/d/file.java"})
+
+	if len(files) != 2 {
+		t.Error("Should have found 2 .editorconfig files but found " + strconv.Itoa(len(files)))
+	}
+}