Adding upstream version 2.1.2.

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

continuous_series_test.go

@@ -0,0 +1,72 @@
+package chart
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/wcharczuk/go-chart/v2/testutil"
+)
+
+func TestContinuousSeries(t *testing.T) {
+	// replaced new assertions helper
+
+	cs := ContinuousSeries{
+		Name:    "Test Series",
+		XValues: LinearRange(1.0, 10.0),
+		YValues: LinearRange(1.0, 10.0),
+	}
+
+	testutil.AssertEqual(t, "Test Series", cs.GetName())
+	testutil.AssertEqual(t, 10, cs.Len())
+	x0, y0 := cs.GetValues(0)
+	testutil.AssertEqual(t, 1.0, x0)
+	testutil.AssertEqual(t, 1.0, y0)
+
+	xn, yn := cs.GetValues(9)
+	testutil.AssertEqual(t, 10.0, xn)
+	testutil.AssertEqual(t, 10.0, yn)
+
+	xn, yn = cs.GetLastValues()
+	testutil.AssertEqual(t, 10.0, xn)
+	testutil.AssertEqual(t, 10.0, yn)
+}
+
+func TestContinuousSeriesValueFormatter(t *testing.T) {
+	// replaced new assertions helper
+
+	cs := ContinuousSeries{
+		XValueFormatter: func(v interface{}) string {
+			return fmt.Sprintf("%f foo", v)
+		},
+		YValueFormatter: func(v interface{}) string {
+			return fmt.Sprintf("%f bar", v)
+		},
+	}
+
+	xf, yf := cs.GetValueFormatters()
+	testutil.AssertEqual(t, "0.100000 foo", xf(0.1))
+	testutil.AssertEqual(t, "0.100000 bar", yf(0.1))
+}
+
+func TestContinuousSeriesValidate(t *testing.T) {
+	// replaced new assertions helper
+
+	cs := ContinuousSeries{
+		Name:    "Test Series",
+		XValues: LinearRange(1.0, 10.0),
+		YValues: LinearRange(1.0, 10.0),
+	}
+	testutil.AssertNil(t, cs.Validate())
+
+	cs = ContinuousSeries{
+		Name:    "Test Series",
+		XValues: LinearRange(1.0, 10.0),
+	}
+	testutil.AssertNotNil(t, cs.Validate())
+
+	cs = ContinuousSeries{
+		Name:    "Test Series",
+		YValues: LinearRange(1.0, 10.0),
+	}
+	testutil.AssertNotNil(t, cs.Validate())
+}