Adding the challenge 0303

0303/table_test.go

@@ -0,0 +1,65 @@
+package db0303
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTableByPKey(t *testing.T) {
+	db := DB{}
+	db.KV.log.FileName = ".test_db"
+	defer os.Remove(db.KV.log.FileName)
+
+	os.Remove(db.KV.log.FileName)
+	err := db.Open()
+	assert.Nil(t, err)
+	defer db.Close()
+
+	schema := &Schema{
+		Table: "link",
+		Cols: []Column{
+			{Name: "time", Type: TypeI64},
+			{Name: "src", Type: TypeStr},
+			{Name: "dst", Type: TypeStr},
+		},
+		PKey: []int{1, 2}, // (src, dst)
+	}
+
+	row := Row{
+		Cell{Type: TypeI64, I64: 123},
+		Cell{Type: TypeStr, Str: []byte("a")},
+		Cell{Type: TypeStr, Str: []byte("b")},
+	}
+	ok, err := db.Select(schema, row)
+	assert.True(t, !ok && err == nil)
+
+	updated, err := db.Insert(schema, row)
+	assert.True(t, updated && err == nil)
+
+	out := Row{
+		Cell{},
+		Cell{Type: TypeStr, Str: []byte("a")},
+		Cell{Type: TypeStr, Str: []byte("b")},
+	}
+	ok, err = db.Select(schema, out)
+	assert.True(t, ok && err == nil)
+	assert.Equal(t, row, out)
+
+	row[0].I64 = 456
+	updated, err = db.Update(schema, row)
+	assert.True(t, updated && err == nil)
+
+	ok, err = db.Select(schema, out)
+	assert.True(t, ok && err == nil)
+	assert.Equal(t, row, out)
+
+	deleted, err := db.Delete(schema, row)
+	assert.True(t, deleted && err == nil)
+
+	ok, err = db.Select(schema, row)
+	assert.True(t, !ok && err == nil)
+}
+
+// QzBQWVJJOUhU https://trialofcode.org/