fix #89 with Image component v2.0 + 23 tests (#90)

* qtbot is needed in any test that uses a QObject
previously these tests would fail if they ran before qtbot was initialized by another test. I'm now running tests in a random order

* add tests for drawBars, readAudioFile, BlankFrame

* replace numpy.seterr with numpy.errstate

* fix incorrect comment

* add MockVideoWorker and imageDataSum

* test further into visualization (less likely to be a false positive)

* test FloodFrame function

* add failing test for Image component
one step towards fixing #89

* test component name CLI parsing

* prevent log warning when 1 setting changed

* correct tests to use widgets when needed

* test undo and blockSignals

* remove stretch_scale (use scale only)

* image ignores scale if stretch checkbox checked
fixes #89

* test Title Text component, ffmpeg command

* Image v2: replace stretched setting with resizeMode
3 resize modes are scale, cover, and stretch. Scale only applies when resizeMode is set to scale. Cover uses ImageOps.fit() to stretch while maintaining aspect ratio. Also, spinBox_scale was moved to be underneath comboBox_resizeMode.

* change transformData into staticmethod
the purpose is to allow easier reuse in other components

* add respondToAudio option to Image component
this causes the image to scale up and down slightly based on the input audio file

* cache static portion of image when animating
increases rendering speed of a 1-minute video by 12 seconds (based on two manual tests anyway)

1 files changed, 71 insertions, 0 deletions

diff --git a/tests/test_classic_visualizer.py b/tests/test_classic_visualizer.py
new file mode 100644
index 0000000..e301263
--- /dev/null
+++ b/tests/test_classic_visualizer.py
@@ -0,0 +1,71 @@
+from avp.command import Command
+from pytestqt import qtbot
+from pytest import fixture
+from . import audioData, MockSignal, imageDataSum
+
+
+sampleSize = 1470  # 44100 / 30 = 1470
+
+
+@fixture
+def coreWithClassicComp(qtbot):
+    """Fixture providing a Command object with Classic Visualizer component added"""
+    command = Command()
+    command.core.insertComponent(
+        0, command.core.moduleIndexFor("Classic Visualizer"), command
+    )
+    yield command.core
+
+
+def test_comp_classic_added(coreWithClassicComp):
+    """Add Classic Visualizer to core"""
+    assert len(coreWithClassicComp.selectedComponents) == 1
+
+
+def test_comp_classic_removed(coreWithClassicComp):
+    """Remove Classic Visualizer from core"""
+    coreWithClassicComp.removeComponent(0)
+    assert len(coreWithClassicComp.selectedComponents) == 0
+
+
+def test_comp_classic_drawBars(coreWithClassicComp, audioData):
+    """Call drawBars after creating audio spectrum data manually."""
+
+    spectrumArray = {
+        0: coreWithClassicComp.selectedComponents[0].transformData(
+            0, audioData[0], sampleSize, 0.08, 0.8, None, 20
+        )
+    }
+    for i in range(sampleSize, len(audioData[0]), sampleSize):
+        spectrumArray[i] = coreWithClassicComp.selectedComponents[0].transformData(
+            i,
+            audioData[0],
+            sampleSize,
+            0.08,
+            0.8,
+            spectrumArray[i - sampleSize].copy(),
+            20,
+        )
+    image = coreWithClassicComp.selectedComponents[0].drawBars(
+        1920, 1080, spectrumArray[sampleSize * 4], (0, 0, 0), 0
+    )
+    assert imageDataSum(image) == 37872316
+
+
+def test_comp_classic_drawBars_using_preFrameRender(coreWithClassicComp, audioData):
+    """Call drawBars after creating audio spectrum data using preFrameRender."""
+    comp = coreWithClassicComp.selectedComponents[0]
+    comp.preFrameRender(
+        completeAudioArray=audioData[0],
+        sampleSize=sampleSize,
+        progressBarSetText=MockSignal(),
+        progressBarUpdate=MockSignal(),
+    )
+    image = comp.drawBars(
+        1920,
+        1080,
+        coreWithClassicComp.selectedComponents[0].spectrumArray[sampleSize * 4],
+        (0, 0, 0),
+        0,
+    )
+    assert imageDataSum(image) == 37872316