core: Implement bar chart

core/src/test/common/org/isoron/uhabits/BaseViewTest.kt

@@ -58,7 +58,7 @@ open class BaseViewTest {
             }
         } else {
             actualImage.export(failedActualPath)
-            fail("Expected image file is missing.")
+            fail("Expected image file is missing. Actual image: $failedActualPath")
         }
     }
 }

core/src/test/common/org/isoron/uhabits/components/BarChartTest.kt

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2016-2019 Álinson Santos Xavier <isoron@gmail.com>
+ *
+ * This file is part of Loop Habit Tracker.
+ *
+ * Loop Habit Tracker is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * Loop Habit Tracker is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.isoron.uhabits.components
+
+import org.isoron.*
+import org.isoron.platform.time.*
+import org.isoron.uhabits.*
+import kotlin.test.*
+
+class BarChartTest : BaseViewTest() {
+    val base = "components/BarChart"
+    val today = LocalDate(2015, 1, 25)
+    val dailyAxis = (0..100).map { today.minus(it) }
+    val weeklyAxis = (0..100).map { today.minus(it * 7) }
+    val monthlyAxis = (0..100).map { today.minus(it * 30) }
+    val yearlyAxis = (0..100).map { today.minus(it * 365) }
+    val fmt = DependencyResolver.getDateFormatter(Locale.US)
+    val component = BarChart(theme, fmt)
+
+    val series1 = listOf(200.0, 80.0, 150.0, 437.0, 50.0, 80.0, 420.0,
+                         350.0, 100.0, 375.0, 300.0, 50.0, 60.0, 350.0,
+                         125.0)
+
+    val series2 = listOf(300.0, 500.0, 280.0, 50.0, 425.0, 300.0, 150.0,
+                         10.0, 50.0, 200.0, 230.0, 20.0, 60.0, 34.0, 100.0)
+
+    init {
+        component.axis = dailyAxis
+        component.series.add(series1)
+        component.colors.add(theme.color(1))
+    }
+
+    @Test
+    fun testDraw() = asyncTest {
+        assertRenders(400, 200, "$base/base.png", component)
+    }
+
+    @Test
+    fun testDrawWeeklyAxis() = asyncTest {
+        component.axis = weeklyAxis
+        assertRenders(400, 200, "$base/axis-weekly.png", component)
+    }
+
+    @Test
+    fun testDrawMonthlyAxis() = asyncTest {
+        component.axis = monthlyAxis
+        assertRenders(400, 200, "$base/axis-monthly.png", component)
+    }
+
+    @Test
+    fun testDrawYearlyAxis() = asyncTest {
+        component.axis = yearlyAxis
+        assertRenders(400, 200, "$base/axis-yearly.png", component)
+    }
+
+    @Test
+    fun testDrawTwoSeries() = asyncTest {
+        component.series.add(series2)
+        component.colors.add(theme.color(3))
+        assertRenders(400, 200, "$base/2-series.png", component)
+    }
+}