Adding upstream version 0.28.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tools/dbutils/json_test.go

@@ -0,0 +1,65 @@
+package dbutils_test
+
+import (
+	"testing"
+
+	"github.com/pocketbase/pocketbase/tools/dbutils"
+)
+
+func TestJSONEach(t *testing.T) {
+	result := dbutils.JSONEach("a.b")
+
+	expected := "json_each(CASE WHEN iif(json_valid([[a.b]]), json_type([[a.b]])='array', FALSE) THEN [[a.b]] ELSE json_array([[a.b]]) END)"
+
+	if result != expected {
+		t.Fatalf("Expected\n%v\ngot\n%v", expected, result)
+	}
+}
+
+func TestJSONArrayLength(t *testing.T) {
+	result := dbutils.JSONArrayLength("a.b")
+
+	expected := "json_array_length(CASE WHEN iif(json_valid([[a.b]]), json_type([[a.b]])='array', FALSE) THEN [[a.b]] ELSE (CASE WHEN [[a.b]] = '' OR [[a.b]] IS NULL THEN json_array() ELSE json_array([[a.b]]) END) END)"
+
+	if result != expected {
+		t.Fatalf("Expected\n%v\ngot\n%v", expected, result)
+	}
+}
+
+func TestJSONExtract(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		column   string
+		path     string
+		expected string
+	}{
+		{
+			"empty path",
+			"a.b",
+			"",
+			"(CASE WHEN json_valid([[a.b]]) THEN JSON_EXTRACT([[a.b]], '$') ELSE JSON_EXTRACT(json_object('pb', [[a.b]]), '$.pb') END)",
+		},
+		{
+			"starting with array index",
+			"a.b",
+			"[1].a[2]",
+			"(CASE WHEN json_valid([[a.b]]) THEN JSON_EXTRACT([[a.b]], '$[1].a[2]') ELSE JSON_EXTRACT(json_object('pb', [[a.b]]), '$.pb[1].a[2]') END)",
+		},
+		{
+			"starting with key",
+			"a.b",
+			"a.b[2].c",
+			"(CASE WHEN json_valid([[a.b]]) THEN JSON_EXTRACT([[a.b]], '$.a.b[2].c') ELSE JSON_EXTRACT(json_object('pb', [[a.b]]), '$.pb.a.b[2].c') END)",
+		},
+	}
+
+	for _, s := range scenarios {
+		t.Run(s.name, func(t *testing.T) {
+			result := dbutils.JSONExtract(s.column, s.path)
+
+			if result != s.expected {
+				t.Fatalf("Expected\n%v\ngot\n%v", s.expected, result)
+			}
+		})
+	}
+}